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0001 # Lithuanian translations for Digikam Manual package.
0002 # Copyright (C) licensed under the  <a href="https://spdx.org/licenses/GFDL-1.2-or-later.html">licensed under the terms of the GNU Free Documentation License 1.2+</a> unless stated otherwise
0003 # This file is distributed under the same license as the Digikam Manual package.
0004 # Automatically generated, 2023.
0005 #
0006 msgid ""
0007 msgstr ""
0008 "Project-Id-Version: Digikam Manual 8.0.0\n"
0009 "Report-Msgid-Bugs-To: \n"
0010 "POT-Creation-Date: 2023-12-02 00:35+0000\n"
0011 "PO-Revision-Date: 2023-01-30 00:50+0000\n"
0012 "Last-Translator: Automatically generated\n"
0013 "Language-Team: none\n"
0014 "Language: lt\n"
0015 "MIME-Version: 1.0\n"
0016 "Content-Type: text/plain; charset=UTF-8\n"
0017 "Content-Transfer-Encoding: 8bit\n"
0018 "Plural-Forms: nplurals=4; plural=(n==1 ? 0 : n%10>=2 && (n%100<10 || n"
0019 "%100>=20) ? 1 : n%10==0 || (n%100>10 && n%100<20) ? 2 : 3);\n"
0020 
0021 #: ../../color_management/working_space.rst:1
0022 msgid "Color Management and Working Space"
0023 msgstr ""
0024 
0025 #: ../../color_management/working_space.rst:1
0026 msgid ""
0027 "digiKam, documentation, user manual, photo management, open source, free, "
0028 "learn, easy, image editor, color management, icc, profile, working space"
0029 msgstr ""
0030 
0031 #: ../../color_management/working_space.rst:14
0032 msgid "The Working Space"
0033 msgstr ""
0034 
0035 #: ../../color_management/working_space.rst:17
0036 msgid "Color Workflow"
0037 msgstr ""
0038 
0039 #: ../../color_management/working_space.rst:19
0040 msgid ""
0041 "So we told digiKam where to find my monitor profile and we have a camera "
0042 "profile that we applied to the image file produced by my RAW processing "
0043 "software. What's the next step in color management?"
0044 msgstr ""
0045 
0046 #: ../../color_management/working_space.rst:21
0047 msgid ""
0048 "You need to choose a working color space so you can edit your image. `Lcms "
0049 "<https://www.littlecms.com/>`_ will transform your image from your camera "
0050 "color space to your chosen working space, via the **Profile Connection "
0051 "Space** specified by your camera color profile. Why cannot to just edit "
0052 "images in the color space described by the camera profile?"
0053 msgstr ""
0054 
0055 #: ../../color_management/working_space.rst:23
0056 msgid ""
0057 "After all, the camera profile should provide the best *fit* to the colors "
0058 "recorded by my camera, as processed by my RAW processing procedure, right? "
0059 "Working spaces, such as sRGB or Adobe RGB, are color spaces that facilitate "
0060 "good results while editing. For instance, pixels with equal values of RGB "
0061 "should appear neutral. This just want means that for any given pixel in an "
0062 "image that has been converted to a suitable working space, if R=G=B you "
0063 "should see grey or black or white on your screen. Many camera profiles "
0064 "violate this *neutral* condition."
0065 msgstr ""
0066 
0067 #: ../../color_management/working_space.rst:29
0068 msgid ""
0069 "digiKam Image Editor has a Menu to Switch Quickly an Image from a Color "
0070 "Space to Another one"
0071 msgstr ""
0072 
0073 #: ../../color_management/working_space.rst:31
0074 msgid ""
0075 "However, there is one other good reason to not want to edit your image in "
0076 "your camera profile color space. If you look at the size of a typical camera "
0077 "profile, it is on the order of a quarter to a half a megabyte or more. It's "
0078 "got a lot of information about all the changes that need to be made at "
0079 "different regions of color and tonality in the original scene, to get "
0080 "accurate color rendition from the RGB values that come out of the RAW "
0081 "processor. The camera profile is accurate (at least for colors in the "
0082 "original target) but not particularly mathematically smooth. Working space "
0083 "color profiles, on the other hand, are very small in size (half a kilobyte "
0084 "instead of half a megabyte) because they describe a color gamut in terms of "
0085 "smooth, continuous mathematical functions. Working space profiles don't need "
0086 "to make allowances for the *messiness* of real world sensors, so the "
0087 "mathematical manipulations performed during image editing will go much more "
0088 "smoothly and accurately than if you try to edit your image while it is still "
0089 "in the camera color space."
0090 msgstr ""
0091 
0092 #: ../../color_management/working_space.rst:33
0093 msgid "Working Space Profiles are characterized by:"
0094 msgstr ""
0095 
0096 #: ../../color_management/working_space.rst:35
0097 msgid ""
0098 "**Gamma** transfer function, which dictates how much the original linear "
0099 "intensity values captured by the camera sensor are altered to make editing "
0100 "easier or more precise. These values from the camera are subjected to the in-"
0101 "camera A-to-D conversion, then interpolated by the RAW processing program to "
0102 "produce the image file."
0103 msgstr ""
0104 
0105 #: ../../color_management/working_space.rst:37
0106 msgid ""
0107 "RGB primaries which dictate the range of colors, that is, the color "
0108 "**Gamut**, covered by a given profile."
0109 msgstr ""
0110 
0111 #: ../../color_management/working_space.rst:39
0112 msgid ""
0113 "**White point**, usually D50 or D65 though other values may be used, which "
0114 "specifies the white point color temperature of the working space."
0115 msgstr ""
0116 
0117 #: ../../color_management/working_space.rst:42
0118 msgid "Confusions Terminology"
0119 msgstr ""
0120 
0121 #: ../../color_management/working_space.rst:44
0122 msgid ""
0123 "Before talking more about working spaces, some confusions and confusing "
0124 "terminology needs to be cleared up:"
0125 msgstr ""
0126 
0127 #: ../../color_management/working_space.rst:46
0128 msgid ""
0129 "sRGB is both a working color space and an output color space for images "
0130 "intended for the web and for monitor display. If you have a spiffy new "
0131 "monitor with a gamut larger than the gamut covered by sRGB, obviously you "
0132 "might want to reconsider what output profile to use to best take advantage "
0133 "of your wonderful and hopefully calibrated and profiled monitor, but please "
0134 "convert your image to sRGB before sending it on to your friends. sRGB is "
0135 "also the color space that a lot of home and mass-production commercial "
0136 "printers expect image files to be in when sent to the printer. It is also "
0137 "the color space that most programs assume if an image does not have an "
0138 "embedded color profile telling the program what color space should be used "
0139 "to interpret (translate) the RGB numbers. So if you choose to not use color-"
0140 "management, your color-management choices are simple - set everything to "
0141 "sRGB."
0142 msgstr ""
0143 
0144 #: ../../color_management/working_space.rst:48
0145 msgid ""
0146 "All JPEGs coming straight out of a camera (even if produced by point-and-"
0147 "shoots cameras that don't allow you to save a RAW file) start life inside "
0148 "the camera as a RAW file produced by the camera's A to D converter. The "
0149 "processor inside the camera interpolates the RAW file, assigns a camera "
0150 "profile, translates the resulting RGB numbers to a working space (usually "
0151 "sRGB but sometimes you can choose AdobeRGB, depending on the camera), does "
0152 "the JPEG compression, and stores the JPEG file on your camera card. So JPEGs "
0153 "from your camera never need to be assigned a camera or input profile which "
0154 "is then translated to a working space via a Profile Connection Space. JPEGs "
0155 "from a camera are already in a working space."
0156 msgstr ""
0157 
0158 #: ../../color_management/working_space.rst:50
0159 msgid ""
0160 "In case anyone is unsure on this point, note that an interpolated RAW file "
0161 "is no longer a RAW file - it has been interpolated and then output as a TIFF "
0162 "whose RGB values need to be translated to a working space, using the camera "
0163 "profile, the Profile Connection Space, and Lcms."
0164 msgstr ""
0165 
0166 #: ../../color_management/working_space.rst:52
0167 msgid ""
0168 "To introduce a bit of commonly heard color-management terminology here - the "
0169 "camera profile and your printer's color profile are both device dependent, "
0170 "whereas the working space will be device-independent - it can be used with "
0171 "any image, with any properly color-managed software, without regard for "
0172 "where the image originated."
0173 msgstr ""
0174 
0175 #: ../../color_management/working_space.rst:54
0176 msgid ""
0177 "Above we have used the words translate and translation as a descriptive "
0178 "metaphor for what Lcms does when it translates RGB values from one color "
0179 "space to another via the Profile Connection Space. The usual and correct "
0180 "terminology is convert and conversion. The four methods of conversion from "
0181 "one color space to another are: perceptual, relative colorimetric, absolute "
0182 "colorimetric, and saturation. Which method of conversion you should use for "
0183 "any given image processing step from RAW file to final output image is "
0184 "beyond the scope of this manual. The standard advice is: when in doubt, use "
0185 "perceptual."
0186 msgstr ""
0187 
0188 #: ../../color_management/working_space.rst:56
0189 msgid ""
0190 "Assign a profile means change the meaning of the RGB numbers in an image by "
0191 "embedding a new profile without changing the actual RGB numbers associated "
0192 "with each pixel in the image; convert means embed a new profile, but also "
0193 "change the RGB numbers at the same time so that the meaning of the RGB "
0194 "values - that is, the real-world visible color represented by the trio of "
0195 "RGB numbers associated with each pixel in an image - remains the same before "
0196 "and after the conversion from one space to another. You should be able to do "
0197 "multiple conversions of an image from one working space to another, and with "
0198 "a properly color-managed image editor, even though all the RGB numbers in "
0199 "the image will change with each conversion, the image on your screen should "
0200 "look the same (leaving aside the usually unnoticeable small but inevitable "
0201 "changes from accumulated gamut mismatches and mathematical rounding errors). "
0202 "However, every time you assign a new working space profile rather than "
0203 "convert to a new working space, the appearance of the image should more or "
0204 "less drastically change."
0205 msgstr ""
0206 
0207 #: ../../color_management/working_space.rst:58
0208 msgid ""
0209 "Color management is not only relevant if you shoot RAW. Color management "
0210 "affects every stage of the image processing pipeline, whether you start with "
0211 "a RAW file that you, yourself interpolate and translate into a TIFF, or if "
0212 "you start with a JPEG or TIFF produced by your camera."
0213 msgstr ""
0214 
0215 #: ../../color_management/working_space.rst:61
0216 msgid "Selecting a Working Space"
0217 msgstr ""
0218 
0219 #: ../../color_management/working_space.rst:63
0220 msgid ""
0221 "Which working space do you need to use in digiKam? Working spaces, such as "
0222 "sRGB or Adobe RGB, are color spaces that facilitate good results while "
0223 "editing. For instance, pixels with equal values of RGB should appear "
0224 "neutral. Using a large gamut working space will lead to posterization, while "
0225 "using a small working space will lead to clipping. This trade-off is a "
0226 "consideration for the Image Editor."
0227 msgstr ""
0228 
0229 #: ../../color_management/working_space.rst:65
0230 msgid "Most working space profiles are characterized by:"
0231 msgstr ""
0232 
0233 #: ../../color_management/working_space.rst:67
0234 msgid ""
0235 "The place of the gamut into the **Diagram** `(1)` of all colors visible to "
0236 "the average human eyes."
0237 msgstr ""
0238 
0239 #: ../../color_management/working_space.rst:69
0240 msgid ""
0241 "The **Gamut** `(2)` triangle to define the range of RGB colors of the "
0242 "profile. Red point is on the bottom right corner, Green is on the top, Blue "
0243 "is on the left bottom. Values given around the edge of the gamut passing "
0244 "from the blue, the green and the red points, are the spectral colors in "
0245 "nanometers."
0246 msgstr ""
0247 
0248 #: ../../color_management/working_space.rst:71
0249 msgid ""
0250 "The **White point** `(3)` to define the total dynamic range of the profile."
0251 msgstr ""
0252 
0253 #: ../../color_management/working_space.rst:73
0254 msgid ""
0255 "The **Gamma** to define the transfer function of the profile (not displayed "
0256 "in the gamut)."
0257 msgstr ""
0258 
0259 #: ../../color_management/working_space.rst:79
0260 msgid "The Color Profile Details of CIE Chromaticity Diagram Show in digiKam"
0261 msgstr ""
0262 
0263 #: ../../color_management/working_space.rst:81
0264 msgid ""
0265 "The practical consequences that result from using different RGB primaries, "
0266 "leading to larger or smaller working spaces, are discussed below. The "
0267 "practical consequences for different choices for the working space white "
0268 "point are beyond the scope of this manual. Here we will talk a little bit "
0269 "about the practical consequences of the working space gamma."
0270 msgstr ""
0271 
0272 #: ../../color_management/working_space.rst:83
0273 msgid ""
0274 "The gamma of a color profile dictates what power transform needs to take "
0275 "place to properly convert from an image's embedded color profile (perhaps "
0276 "your working color space) to another color profile with a different gamma, "
0277 "such as (i) the display profile used to display the image on the screen or "
0278 "(ii) perhaps to a new working space, or (iii) perhaps from your working "
0279 "space to your printer's color space."
0280 msgstr ""
0281 
0282 #: ../../color_management/working_space.rst:87
0283 msgid ""
0284 "Mathematically speaking, for a power transform you normalize the RGB numbers "
0285 "and raise the resulting numbers to an appropriate power depending on the "
0286 "respective gammas of the starting and ending color space, then re-normalize "
0287 "the results to a new set of RGB numbers. `Lcms <https://www.littlecms.com/"
0288 ">`_ does this for you when there is a need to convert from one color space "
0289 "to another in your workflow."
0290 msgstr ""
0291 
0292 #: ../../color_management/working_space.rst:89
0293 msgid ""
0294 "One practical consequence of the gamma of a working space is that the higher "
0295 "the gamma, the more tones are available for editing in the shadows, with "
0296 "consequently fewer tones available in the highlights. So theoretically, if "
0297 "you are working on a very dark-toned (low key) image you might want a "
0298 "working space with a higher gamma. And if you are working on a high key "
0299 "image, say a picture taken in full noon sunlight of a wedding dress with "
0300 "snow as a backdrop, you might want to choose a working space with a lower "
0301 "gamma, so you have more available tonal gradations in the highlights. But in "
0302 "the real world of real image editing, almost everyone uses working spaces "
0303 "with either gamma 1.8 or 2.2."
0304 msgstr ""
0305 
0306 #: ../../color_management/working_space.rst:91
0307 msgid ""
0308 "Some people are trying to standardize on gamma 2.0. sRGB and LStar-RGB are "
0309 "not gamma-based working spaces. Rather, sRGB uses a hybrid gamma, and LStar-"
0310 "RGB uses a luminosity-based tonal response curve instead of a gamma value."
0311 msgstr ""
0312 
0313 #: ../../color_management/working_space.rst:93
0314 msgid ""
0315 "In addition to gamma 1.8 and gamma 2.2 the only other gamma for a working "
0316 "space that gets much mention or use is gamma 1.0, also called linear gamma. "
0317 "Linear gamma is used in HDR (high dynamic range) imaging and also if one "
0318 "wants to avoid introducing gamma-induced errors into one's regular low "
0319 "dynamic range editing. Gamma-induced errors is a topic outside the scope of "
0320 "this manual, but see Gamma errors in picture scaling, for gamma-induced "
0321 "color shifts."
0322 msgstr ""
0323 
0324 #: ../../color_management/working_space.rst:95
0325 msgid ""
0326 "Unfortunately and despite their undeniable mathematical advantages, linear "
0327 "gamma working spaces have so few tones in the shadows that they are "
0328 "impossible to use for editing if one is working in 8-bits, and still "
0329 "problematic at 16-bits. When the day comes when we are all doing our editing "
0330 "on 32-bit files produced by our HDR cameras on our personal supercomputers, "
0331 "we predict that we will all be using working spaces with gamma 1."
0332 msgstr ""
0333 
0334 #: ../../color_management/working_space.rst:101
0335 msgid ""
0336 "Depending of the Settings digiKam Can Ask you to Convert to Working Space "
0337 "When Loading in Image Editor"
0338 msgstr ""
0339 
0340 #: ../../color_management/working_space.rst:104
0341 msgid "Large or Small Gamut"
0342 msgstr ""
0343 
0344 #: ../../color_management/working_space.rst:106
0345 msgid ""
0346 "One major consideration in choosing a working space is that some working "
0347 "spaces are bigger than others, meaning they cover more of the visible "
0348 "spectrum (and perhaps even include some imaginary colors - mathematical "
0349 "constructs that don't really exist). These bigger spaces offer the advantage "
0350 "of allowing you to keep all the colors captured by your camera and preserved "
0351 "by the Lcms conversion from your camera profile to the really big profile "
0352 "connection space."
0353 msgstr ""
0354 
0355 #: ../../color_management/working_space.rst:112
0356 msgid ""
0357 "For the Left to Right: sRGB, AbodeRGB, WideGammutRGB, and ProPhotoRGB Color "
0358 "Profile Show in digiKam"
0359 msgstr ""
0360 
0361 #: ../../color_management/working_space.rst:114
0362 msgid ""
0363 "But keeping all the possible colors comes at a price. It seems that any "
0364 "given digital image (pictures of daffodils with saturated yellows being one "
0365 "common exception) likely only contains a small subset of all the possible "
0366 "visible colors that your camera is capable of capturing. This small subset "
0367 "is easily contained in one of the smaller working spaces. Using a very large "
0368 "working space mean that editing your image (applying curves, saturation, "
0369 "etc.) can easily produce colors that your eventual output device (printer, "
0370 "monitor) simply cannot display."
0371 msgstr ""
0372 
0373 #: ../../color_management/working_space.rst:116
0374 msgid ""
0375 "So the conversion from your working space to your output device space (say "
0376 "your printer) will have to remap the out of gamut colors in your edited "
0377 "image, some of which might even be totally imaginary, to your printer color "
0378 "space with its much smaller gamut, leading to inaccurate colors at best and "
0379 "at worst to banding (posterization - gaps in what should be a smooth color "
0380 "transition, say, across an expanse of blue sky) and clipping (your carefully "
0381 "crafted muted transitions across delicate shades of red, for example, might "
0382 "get remapped to a solid block of dull red after conversion to your printer's "
0383 "color space)."
0384 msgstr ""
0385 
0386 #: ../../color_management/working_space.rst:118
0387 msgid ""
0388 "In other words, large gamut working spaces, improperly handled, can lead to "
0389 "lost information on output. Small gamut working spaces can clip information "
0390 "on input. Here is some oft-repeated advice:"
0391 msgstr ""
0392 
0393 #: ../../color_management/working_space.rst:120
0394 msgid "For images intended for the web, use sRGB."
0395 msgstr ""
0396 
0397 #: ../../color_management/working_space.rst:122
0398 msgid ""
0399 "For the most accuracy in your image editing (that is, making the most of "
0400 "your *bits* with the least risk of banding or clipping when you convert your "
0401 "image from your working space to an output space), use the smallest working "
0402 "space that includes all the colors in the scene that you photographed, plus "
0403 "a little extra room for those new colors you intentionally produce as you "
0404 "edit."
0405 msgstr ""
0406 
0407 #: ../../color_management/working_space.rst:124
0408 msgid ""
0409 "If you are working in 8-bits rather than 16-bits, choose a smaller space "
0410 "rather than a larger space."
0411 msgstr ""
0412 
0413 #: ../../color_management/working_space.rst:126
0414 msgid ""
0415 "For archival purposes, convert your RAW file to a 16-bit TIFF with a large "
0416 "gamut working space to avoid loosing color information. Then convert this "
0417 "archival TIFF to your working space of choice (saving the converted working "
0418 "TIFF under a new name, of course). See here for more details."
0419 msgstr ""
0420 
0421 #: ../../color_management/working_space.rst:132
0422 msgid "digiKam Queue Manager Allows to Batch Convert Color Space"
0423 msgstr ""
0424 
0425 #: ../../color_management/working_space.rst:135
0426 msgid "Gamma Properties"
0427 msgstr ""
0428 
0429 #: ../../color_management/working_space.rst:137
0430 msgid ""
0431 "The gamma of a color profile dictates what power transform needs to take "
0432 "place to properly convert from an image's embedded color profile (perhaps "
0433 "your working color space or your camera color profile) to another color "
0434 "profile with a different gamma, such as your chosen working space, or the "
0435 "display profile used to display the image on the screen or perhaps from one "
0436 "working space to another, or perhaps from your working space to your "
0437 "printer's color space. `Libraw <https://www.libraw.org/>`_ outputs a 16-bit "
0438 "image with a linear gamma, which means that a histogram of the resulting "
0439 "image file shows the actual amount of light that each pixel on the camera "
0440 "sensor captured during the exposure (paraphrasing this page). (Which is why "
0441 "at present applying a camera profile to the Libraw output also requires "
0442 "applying an appropriate gamma transform to get to the desired working space, "
0443 "unless the camera profile also uses gamma=1.)"
0444 msgstr ""
0445 
0446 #: ../../color_management/working_space.rst:139
0447 msgid ""
0448 "One practical consequence of the gamma of a working space is that the higher "
0449 "the gamma, the more discrete tones are available for editing in the shadows, "
0450 "with consequently fewer tones available in the highlights. Changing the "
0451 "gamma of an image redistributes the number of tones available in the lighter "
0452 "and darker areas of an image. Theoretically, if you are working on a very "
0453 "dark-toned (low key) image you might want a working space with a higher "
0454 "gamma. And if you are working on a high key image, say a picture taken in "
0455 "full noon sunlight of a wedding dress with snow as a backdrop, you might "
0456 "want to choose a working space with a lower gamma, so you have more "
0457 "available tonal gradations in the highlights."
0458 msgstr ""
0459 
0460 #: ../../color_management/working_space.rst:141
0461 msgid ""
0462 "Theory aside, in the real world of real image editing, almost everyone uses "
0463 "working spaces with either a gamma of either 1.8 or 2.2. sRGB and L*-RGB are "
0464 "two notable exceptions."
0465 msgstr ""
0466 
0467 #: ../../color_management/working_space.rst:143
0468 msgid ""
0469 "sRGB uses a transfer function close to that of a CRT (and thus not "
0470 "necessarily relevant to image editing or to display on an LCD). Unlike most "
0471 "other RGB color spaces the sRGB gamma can not be expressed as a single "
0472 "numerical value. The overall gamma is approximately 2.2, consisting of a "
0473 "linear (gamma 1.0) section near black, and a non-linear section elsewhere "
0474 "involving a 2.4 exponent and a gamma (slope of log output versus log input) "
0475 "changing from 1.0 through about 2.3, which makes for some complicated math "
0476 "during image processing."
0477 msgstr ""
0478 
0479 #: ../../color_management/working_space.rst:145
0480 msgid ""
0481 "L*-RGB uses as its transfer function the same perceptually uniform transfer "
0482 "function as the CIELab color space. *When storing colors in limited "
0483 "precision values* using a perceptually uniform transfer function *can "
0484 "improve the reproduction of tones*."
0485 msgstr ""
0486 
0487 #: ../../color_management/working_space.rst:147
0488 msgid ""
0489 "In addition to gamma=1.8 and gamma=2.2, the only other gamma for a working "
0490 "space that gets much mention or use is linear gamma, or gamma=1.0. As noted "
0491 "above, `Libraw <https://www.libraw.org/>`_ outputs linear gamma files if you "
0492 "ask for 16-bit output. Linear gamma is used in HDR (high dynamic range) "
0493 "imaging and also if one wants to avoid introducing gamma-induced errors into "
0494 "one's regular low dynamic range editing."
0495 msgstr ""
0496 
0497 #: ../../color_management/working_space.rst:149
0498 msgid ""
0499 "**Gamma-induced errors** is a topic outside the scope of this manual but "
0500 "it's commonly-encountered that gamma-induced error that is caused by "
0501 "incorrectly calculating luminance in a nonlinear RGB working space. And in a "
0502 "similar vein, the calculations involved in mixing colors together to produce "
0503 "new colors (such as using a digital filter to add warmth to an image) result "
0504 "in gamma errors unless the new colors are calculated by first transforming "
0505 "all the relevant values back to their linear values."
0506 msgstr ""
0507 
0508 #: ../../color_management/working_space.rst:151
0509 msgid ""
0510 "Unfortunately and despite their undeniable mathematical advantages, linear "
0511 "gamma working spaces have so few tones in the shadows that they are "
0512 "impossible to use for editing if one is working in 8-bit, and still "
0513 "problematic at 16-bit. When the day comes when we are all doing our editing "
0514 "on 32-bit files produced by our HDR cameras on our personal supercomputers, "
0515 "We can predict that we will all be using working spaces with gamma=1."
0516 msgstr ""
0517 
0518 #: ../../color_management/working_space.rst:154
0519 msgid "Tonal Steps and Gamut Size"
0520 msgstr ""
0521 
0522 #: ../../color_management/working_space.rst:156
0523 msgid ""
0524 "How many discrete tonal steps are there in a digital image? In an 8-bit "
0525 "image, you have 256 tonal steps from solid black to solid white. In a 16-bit "
0526 "image theoretically you have 65536 steps. But remember, those 16-bit started "
0527 "out as either 10-bit (=1024 steps), 12-bit (=4096 steps), or 14-bit (=16384 "
0528 "steps) as produced by the camera's A-to-D converter - the extra bits to "
0529 "reach 16-bit start out as just padding. The available tones are not "
0530 "distributed evenly from light to dark. In linear gamma mode (as the camera "
0531 "sensor sees things), there's a whole lot more tones in the highlights than "
0532 "in the shadows. Hence the advice, if you shoot RAW, to expose to the right "
0533 "but don't blow the highlights."
0534 msgstr ""
0535 
0536 #: ../../color_management/working_space.rst:158
0537 msgid ""
0538 "One major consideration in choosing a working space is that some working "
0539 "spaces are bigger than others, meaning they cover more of the visible "
0540 "spectrum (and as a consequence include some imaginary colors - mathematical "
0541 "constructs that don't really exist). These bigger spaces offer the advantage "
0542 "of allowing you to keep all the colors captured by your camera and preserved "
0543 "by the `Lcms <https://www.littlecms.com/>`_ conversion from your camera "
0544 "profile to the super-wide-gamut profile connection space and out again to "
0545 "your chosen working space."
0546 msgstr ""
0547 
0548 #: ../../color_management/working_space.rst:160
0549 msgid ""
0550 "But keeping all the possible colors comes at a price, as explained below. "
0551 "And it seems that any given digital image likely only contains a small "
0552 "subset of all the possible visible colors that your camera is capable of "
0553 "capturing. This small subset is easily contained in one of the smaller "
0554 "working spaces."
0555 msgstr ""
0556 
0557 #: ../../color_management/working_space.rst:162
0558 msgid ""
0559 "Using a very large working space means that editing your image (applying "
0560 "curves, increasing saturation, etc.) can easily produce colors that your "
0561 "eventual output device (printer, monitor) simply cannot reproduce (you "
0562 "cannot see these colors while you're editing, either). So the conversion "
0563 "from your working space to your output device space (say your printer) will "
0564 "have to remap the out-of-gamut colors in your edited image, some of which "
0565 "might even be totally imaginary, to your printer color space with its much "
0566 "smaller color gamut."
0567 msgstr ""
0568 
0569 #: ../../color_management/working_space.rst:164
0570 msgid ""
0571 "This remapping process will lead to inaccurate colors and loss of saturation "
0572 "at best. Even worse, the remapping can easily lead to banding (posterization "
0573 "- gaps in what should be a smooth color transition, across an expanse of "
0574 "blue sky) and clipping (e.g. your carefully crafted muted transitions across "
0575 "delicate shades of red, for example, might get remapped to a solid block of "
0576 "dull red after conversion to your printer's color space). Also, the experts "
0577 "say that 8-bit images just don't have enough tones to stretch across a wide "
0578 "gamut working space without banding and loss of saturation, even before "
0579 "conversion to an output space. So if you choose a large gamut working space, "
0580 "make sure you start with a 16-bit image."
0581 msgstr ""
0582 
0583 #: ../../color_management/working_space.rst:171
0584 msgid ""
0585 "The digiKam Color Profile Properties Dialog Displaying BestRGB Information"
0586 msgstr ""
0587 
0588 #: ../../color_management/working_space.rst:173
0589 msgid ""
0590 "To summarize, large gamut working spaces, improperly handled, can lead to "
0591 "lost information on output. Small gamut working spaces can clip information "
0592 "on input. Medium-sized gamut working spaces try to strike a happy medium."
0593 msgstr ""
0594 
0595 #: ../../color_management/working_space.rst:175
0596 msgid "Here are some oft-repeated bits of advice on choosing a working space:"
0597 msgstr ""
0598 
0599 #: ../../color_management/working_space.rst:177
0600 msgid ""
0601 "For images intended for the web, use (or at least convert the final image "
0602 "to) sRGB."
0603 msgstr ""
0604 
0605 #: ../../color_management/working_space.rst:179
0606 msgid ""
0607 "For the most accuracy in your image editing (that is, making the most of "
0608 "your limited *bits* with the least risk of banding or clipping when you "
0609 "convert your image from your working space to an output space), use the "
0610 "smallest working space that includes all the colors in the scene that you "
0611 "photographed, plus a little extra room for those new colors you "
0612 "intentionally produce as you edit."
0613 msgstr ""
0614 
0615 #: ../../color_management/working_space.rst:181
0616 msgid ""
0617 "If you are working in 8-bits rather than 16-bits, choose a smaller rather "
0618 "than a larger working space to avoid clipping and banding."
0619 msgstr ""
0620 
0621 #: ../../color_management/working_space.rst:183
0622 msgid ""
0623 "For archival purposes, convert your RAW file to a 16-bit TIFF with a large "
0624 "gamut working space to avoid loosing color information. Then convert this "
0625 "archival TIFF to your medium-gamut or large-gamut working space of choice "
0626 "(saving the converted working TIFF under a new name, of course)."
0627 msgstr ""