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0001 # translation of docs_digikam_org_color_management___working_space.po to Slovak
0002 # Roman PaholĂ­k <wizzardsk@gmail.com>, 2023.
0003 msgid ""
0004 msgstr ""
0005 "Project-Id-Version: docs_digikam_org_color_management___working_space\n"
0006 "Report-Msgid-Bugs-To: \n"
0007 "POT-Creation-Date: 2023-12-02 00:35+0000\n"
0008 "PO-Revision-Date: 2023-03-19 10:13+0100\n"
0009 "Last-Translator: Roman Paholik <wizzardsk@gmail.com>\n"
0010 "Language-Team: Slovak <kde-sk@linux.sk>\n"
0011 "Language: sk\n"
0012 "MIME-Version: 1.0\n"
0013 "Content-Type: text/plain; charset=UTF-8\n"
0014 "Content-Transfer-Encoding: 8bit\n"
0015 "X-Generator: Lokalize 22.12.3\n"
0016 "Plural-Forms: nplurals=3; plural=(n==1) ? 0 : (n>=2 && n<=4) ? 1 : 2;\n"
0017 
0018 #: ../../color_management/working_space.rst:1
0019 msgid "Color Management and Working Space"
0020 msgstr ""
0021 
0022 #: ../../color_management/working_space.rst:1
0023 msgid ""
0024 "digiKam, documentation, user manual, photo management, open source, free, "
0025 "learn, easy, image editor, color management, icc, profile, working space"
0026 msgstr ""
0027 
0028 #: ../../color_management/working_space.rst:14
0029 msgid "The Working Space"
0030 msgstr "Pracovná plocha"
0031 
0032 #: ../../color_management/working_space.rst:17
0033 msgid "Color Workflow"
0034 msgstr ""
0035 
0036 #: ../../color_management/working_space.rst:19
0037 msgid ""
0038 "So we told digiKam where to find my monitor profile and we have a camera "
0039 "profile that we applied to the image file produced by my RAW processing "
0040 "software. What's the next step in color management?"
0041 msgstr ""
0042 
0043 #: ../../color_management/working_space.rst:21
0044 msgid ""
0045 "You need to choose a working color space so you can edit your image. `Lcms "
0046 "<https://www.littlecms.com/>`_ will transform your image from your camera "
0047 "color space to your chosen working space, via the **Profile Connection "
0048 "Space** specified by your camera color profile. Why cannot to just edit "
0049 "images in the color space described by the camera profile?"
0050 msgstr ""
0051 
0052 #: ../../color_management/working_space.rst:23
0053 msgid ""
0054 "After all, the camera profile should provide the best *fit* to the colors "
0055 "recorded by my camera, as processed by my RAW processing procedure, right? "
0056 "Working spaces, such as sRGB or Adobe RGB, are color spaces that facilitate "
0057 "good results while editing. For instance, pixels with equal values of RGB "
0058 "should appear neutral. This just want means that for any given pixel in an "
0059 "image that has been converted to a suitable working space, if R=G=B you "
0060 "should see grey or black or white on your screen. Many camera profiles "
0061 "violate this *neutral* condition."
0062 msgstr ""
0063 
0064 #: ../../color_management/working_space.rst:29
0065 msgid ""
0066 "digiKam Image Editor has a Menu to Switch Quickly an Image from a Color "
0067 "Space to Another one"
0068 msgstr ""
0069 
0070 #: ../../color_management/working_space.rst:31
0071 msgid ""
0072 "However, there is one other good reason to not want to edit your image in "
0073 "your camera profile color space. If you look at the size of a typical camera "
0074 "profile, it is on the order of a quarter to a half a megabyte or more. It's "
0075 "got a lot of information about all the changes that need to be made at "
0076 "different regions of color and tonality in the original scene, to get "
0077 "accurate color rendition from the RGB values that come out of the RAW "
0078 "processor. The camera profile is accurate (at least for colors in the "
0079 "original target) but not particularly mathematically smooth. Working space "
0080 "color profiles, on the other hand, are very small in size (half a kilobyte "
0081 "instead of half a megabyte) because they describe a color gamut in terms of "
0082 "smooth, continuous mathematical functions. Working space profiles don't need "
0083 "to make allowances for the *messiness* of real world sensors, so the "
0084 "mathematical manipulations performed during image editing will go much more "
0085 "smoothly and accurately than if you try to edit your image while it is still "
0086 "in the camera color space."
0087 msgstr ""
0088 
0089 #: ../../color_management/working_space.rst:33
0090 msgid "Working Space Profiles are characterized by:"
0091 msgstr ""
0092 
0093 #: ../../color_management/working_space.rst:35
0094 msgid ""
0095 "**Gamma** transfer function, which dictates how much the original linear "
0096 "intensity values captured by the camera sensor are altered to make editing "
0097 "easier or more precise. These values from the camera are subjected to the in-"
0098 "camera A-to-D conversion, then interpolated by the RAW processing program to "
0099 "produce the image file."
0100 msgstr ""
0101 
0102 #: ../../color_management/working_space.rst:37
0103 msgid ""
0104 "RGB primaries which dictate the range of colors, that is, the color "
0105 "**Gamut**, covered by a given profile."
0106 msgstr ""
0107 
0108 #: ../../color_management/working_space.rst:39
0109 msgid ""
0110 "**White point**, usually D50 or D65 though other values may be used, which "
0111 "specifies the white point color temperature of the working space."
0112 msgstr ""
0113 
0114 #: ../../color_management/working_space.rst:42
0115 msgid "Confusions Terminology"
0116 msgstr ""
0117 
0118 #: ../../color_management/working_space.rst:44
0119 msgid ""
0120 "Before talking more about working spaces, some confusions and confusing "
0121 "terminology needs to be cleared up:"
0122 msgstr ""
0123 
0124 #: ../../color_management/working_space.rst:46
0125 msgid ""
0126 "sRGB is both a working color space and an output color space for images "
0127 "intended for the web and for monitor display. If you have a spiffy new "
0128 "monitor with a gamut larger than the gamut covered by sRGB, obviously you "
0129 "might want to reconsider what output profile to use to best take advantage "
0130 "of your wonderful and hopefully calibrated and profiled monitor, but please "
0131 "convert your image to sRGB before sending it on to your friends. sRGB is "
0132 "also the color space that a lot of home and mass-production commercial "
0133 "printers expect image files to be in when sent to the printer. It is also "
0134 "the color space that most programs assume if an image does not have an "
0135 "embedded color profile telling the program what color space should be used "
0136 "to interpret (translate) the RGB numbers. So if you choose to not use color-"
0137 "management, your color-management choices are simple - set everything to "
0138 "sRGB."
0139 msgstr ""
0140 
0141 #: ../../color_management/working_space.rst:48
0142 msgid ""
0143 "All JPEGs coming straight out of a camera (even if produced by point-and-"
0144 "shoots cameras that don't allow you to save a RAW file) start life inside "
0145 "the camera as a RAW file produced by the camera's A to D converter. The "
0146 "processor inside the camera interpolates the RAW file, assigns a camera "
0147 "profile, translates the resulting RGB numbers to a working space (usually "
0148 "sRGB but sometimes you can choose AdobeRGB, depending on the camera), does "
0149 "the JPEG compression, and stores the JPEG file on your camera card. So JPEGs "
0150 "from your camera never need to be assigned a camera or input profile which "
0151 "is then translated to a working space via a Profile Connection Space. JPEGs "
0152 "from a camera are already in a working space."
0153 msgstr ""
0154 
0155 #: ../../color_management/working_space.rst:50
0156 msgid ""
0157 "In case anyone is unsure on this point, note that an interpolated RAW file "
0158 "is no longer a RAW file - it has been interpolated and then output as a TIFF "
0159 "whose RGB values need to be translated to a working space, using the camera "
0160 "profile, the Profile Connection Space, and Lcms."
0161 msgstr ""
0162 
0163 #: ../../color_management/working_space.rst:52
0164 msgid ""
0165 "To introduce a bit of commonly heard color-management terminology here - the "
0166 "camera profile and your printer's color profile are both device dependent, "
0167 "whereas the working space will be device-independent - it can be used with "
0168 "any image, with any properly color-managed software, without regard for "
0169 "where the image originated."
0170 msgstr ""
0171 
0172 #: ../../color_management/working_space.rst:54
0173 msgid ""
0174 "Above we have used the words translate and translation as a descriptive "
0175 "metaphor for what Lcms does when it translates RGB values from one color "
0176 "space to another via the Profile Connection Space. The usual and correct "
0177 "terminology is convert and conversion. The four methods of conversion from "
0178 "one color space to another are: perceptual, relative colorimetric, absolute "
0179 "colorimetric, and saturation. Which method of conversion you should use for "
0180 "any given image processing step from RAW file to final output image is "
0181 "beyond the scope of this manual. The standard advice is: when in doubt, use "
0182 "perceptual."
0183 msgstr ""
0184 
0185 #: ../../color_management/working_space.rst:56
0186 msgid ""
0187 "Assign a profile means change the meaning of the RGB numbers in an image by "
0188 "embedding a new profile without changing the actual RGB numbers associated "
0189 "with each pixel in the image; convert means embed a new profile, but also "
0190 "change the RGB numbers at the same time so that the meaning of the RGB "
0191 "values - that is, the real-world visible color represented by the trio of "
0192 "RGB numbers associated with each pixel in an image - remains the same before "
0193 "and after the conversion from one space to another. You should be able to do "
0194 "multiple conversions of an image from one working space to another, and with "
0195 "a properly color-managed image editor, even though all the RGB numbers in "
0196 "the image will change with each conversion, the image on your screen should "
0197 "look the same (leaving aside the usually unnoticeable small but inevitable "
0198 "changes from accumulated gamut mismatches and mathematical rounding errors). "
0199 "However, every time you assign a new working space profile rather than "
0200 "convert to a new working space, the appearance of the image should more or "
0201 "less drastically change."
0202 msgstr ""
0203 
0204 #: ../../color_management/working_space.rst:58
0205 msgid ""
0206 "Color management is not only relevant if you shoot RAW. Color management "
0207 "affects every stage of the image processing pipeline, whether you start with "
0208 "a RAW file that you, yourself interpolate and translate into a TIFF, or if "
0209 "you start with a JPEG or TIFF produced by your camera."
0210 msgstr ""
0211 
0212 #: ../../color_management/working_space.rst:61
0213 msgid "Selecting a Working Space"
0214 msgstr ""
0215 
0216 #: ../../color_management/working_space.rst:63
0217 msgid ""
0218 "Which working space do you need to use in digiKam? Working spaces, such as "
0219 "sRGB or Adobe RGB, are color spaces that facilitate good results while "
0220 "editing. For instance, pixels with equal values of RGB should appear "
0221 "neutral. Using a large gamut working space will lead to posterization, while "
0222 "using a small working space will lead to clipping. This trade-off is a "
0223 "consideration for the Image Editor."
0224 msgstr ""
0225 
0226 #: ../../color_management/working_space.rst:65
0227 msgid "Most working space profiles are characterized by:"
0228 msgstr ""
0229 
0230 #: ../../color_management/working_space.rst:67
0231 msgid ""
0232 "The place of the gamut into the **Diagram** `(1)` of all colors visible to "
0233 "the average human eyes."
0234 msgstr ""
0235 
0236 #: ../../color_management/working_space.rst:69
0237 msgid ""
0238 "The **Gamut** `(2)` triangle to define the range of RGB colors of the "
0239 "profile. Red point is on the bottom right corner, Green is on the top, Blue "
0240 "is on the left bottom. Values given around the edge of the gamut passing "
0241 "from the blue, the green and the red points, are the spectral colors in "
0242 "nanometers."
0243 msgstr ""
0244 
0245 #: ../../color_management/working_space.rst:71
0246 msgid ""
0247 "The **White point** `(3)` to define the total dynamic range of the profile."
0248 msgstr ""
0249 
0250 #: ../../color_management/working_space.rst:73
0251 msgid ""
0252 "The **Gamma** to define the transfer function of the profile (not displayed "
0253 "in the gamut)."
0254 msgstr ""
0255 
0256 #: ../../color_management/working_space.rst:79
0257 msgid "The Color Profile Details of CIE Chromaticity Diagram Show in digiKam"
0258 msgstr ""
0259 
0260 #: ../../color_management/working_space.rst:81
0261 msgid ""
0262 "The practical consequences that result from using different RGB primaries, "
0263 "leading to larger or smaller working spaces, are discussed below. The "
0264 "practical consequences for different choices for the working space white "
0265 "point are beyond the scope of this manual. Here we will talk a little bit "
0266 "about the practical consequences of the working space gamma."
0267 msgstr ""
0268 
0269 #: ../../color_management/working_space.rst:83
0270 msgid ""
0271 "The gamma of a color profile dictates what power transform needs to take "
0272 "place to properly convert from an image's embedded color profile (perhaps "
0273 "your working color space) to another color profile with a different gamma, "
0274 "such as (i) the display profile used to display the image on the screen or "
0275 "(ii) perhaps to a new working space, or (iii) perhaps from your working "
0276 "space to your printer's color space."
0277 msgstr ""
0278 
0279 #: ../../color_management/working_space.rst:87
0280 msgid ""
0281 "Mathematically speaking, for a power transform you normalize the RGB numbers "
0282 "and raise the resulting numbers to an appropriate power depending on the "
0283 "respective gammas of the starting and ending color space, then re-normalize "
0284 "the results to a new set of RGB numbers. `Lcms <https://www.littlecms.com/"
0285 ">`_ does this for you when there is a need to convert from one color space "
0286 "to another in your workflow."
0287 msgstr ""
0288 
0289 #: ../../color_management/working_space.rst:89
0290 msgid ""
0291 "One practical consequence of the gamma of a working space is that the higher "
0292 "the gamma, the more tones are available for editing in the shadows, with "
0293 "consequently fewer tones available in the highlights. So theoretically, if "
0294 "you are working on a very dark-toned (low key) image you might want a "
0295 "working space with a higher gamma. And if you are working on a high key "
0296 "image, say a picture taken in full noon sunlight of a wedding dress with "
0297 "snow as a backdrop, you might want to choose a working space with a lower "
0298 "gamma, so you have more available tonal gradations in the highlights. But in "
0299 "the real world of real image editing, almost everyone uses working spaces "
0300 "with either gamma 1.8 or 2.2."
0301 msgstr ""
0302 
0303 #: ../../color_management/working_space.rst:91
0304 msgid ""
0305 "Some people are trying to standardize on gamma 2.0. sRGB and LStar-RGB are "
0306 "not gamma-based working spaces. Rather, sRGB uses a hybrid gamma, and LStar-"
0307 "RGB uses a luminosity-based tonal response curve instead of a gamma value."
0308 msgstr ""
0309 
0310 #: ../../color_management/working_space.rst:93
0311 msgid ""
0312 "In addition to gamma 1.8 and gamma 2.2 the only other gamma for a working "
0313 "space that gets much mention or use is gamma 1.0, also called linear gamma. "
0314 "Linear gamma is used in HDR (high dynamic range) imaging and also if one "
0315 "wants to avoid introducing gamma-induced errors into one's regular low "
0316 "dynamic range editing. Gamma-induced errors is a topic outside the scope of "
0317 "this manual, but see Gamma errors in picture scaling, for gamma-induced "
0318 "color shifts."
0319 msgstr ""
0320 
0321 #: ../../color_management/working_space.rst:95
0322 msgid ""
0323 "Unfortunately and despite their undeniable mathematical advantages, linear "
0324 "gamma working spaces have so few tones in the shadows that they are "
0325 "impossible to use for editing if one is working in 8-bits, and still "
0326 "problematic at 16-bits. When the day comes when we are all doing our editing "
0327 "on 32-bit files produced by our HDR cameras on our personal supercomputers, "
0328 "we predict that we will all be using working spaces with gamma 1."
0329 msgstr ""
0330 
0331 #: ../../color_management/working_space.rst:101
0332 msgid ""
0333 "Depending of the Settings digiKam Can Ask you to Convert to Working Space "
0334 "When Loading in Image Editor"
0335 msgstr ""
0336 
0337 #: ../../color_management/working_space.rst:104
0338 msgid "Large or Small Gamut"
0339 msgstr ""
0340 
0341 #: ../../color_management/working_space.rst:106
0342 msgid ""
0343 "One major consideration in choosing a working space is that some working "
0344 "spaces are bigger than others, meaning they cover more of the visible "
0345 "spectrum (and perhaps even include some imaginary colors - mathematical "
0346 "constructs that don't really exist). These bigger spaces offer the advantage "
0347 "of allowing you to keep all the colors captured by your camera and preserved "
0348 "by the Lcms conversion from your camera profile to the really big profile "
0349 "connection space."
0350 msgstr ""
0351 
0352 #: ../../color_management/working_space.rst:112
0353 msgid ""
0354 "For the Left to Right: sRGB, AbodeRGB, WideGammutRGB, and ProPhotoRGB Color "
0355 "Profile Show in digiKam"
0356 msgstr ""
0357 
0358 #: ../../color_management/working_space.rst:114
0359 msgid ""
0360 "But keeping all the possible colors comes at a price. It seems that any "
0361 "given digital image (pictures of daffodils with saturated yellows being one "
0362 "common exception) likely only contains a small subset of all the possible "
0363 "visible colors that your camera is capable of capturing. This small subset "
0364 "is easily contained in one of the smaller working spaces. Using a very large "
0365 "working space mean that editing your image (applying curves, saturation, "
0366 "etc.) can easily produce colors that your eventual output device (printer, "
0367 "monitor) simply cannot display."
0368 msgstr ""
0369 
0370 #: ../../color_management/working_space.rst:116
0371 msgid ""
0372 "So the conversion from your working space to your output device space (say "
0373 "your printer) will have to remap the out of gamut colors in your edited "
0374 "image, some of which might even be totally imaginary, to your printer color "
0375 "space with its much smaller gamut, leading to inaccurate colors at best and "
0376 "at worst to banding (posterization - gaps in what should be a smooth color "
0377 "transition, say, across an expanse of blue sky) and clipping (your carefully "
0378 "crafted muted transitions across delicate shades of red, for example, might "
0379 "get remapped to a solid block of dull red after conversion to your printer's "
0380 "color space)."
0381 msgstr ""
0382 
0383 #: ../../color_management/working_space.rst:118
0384 msgid ""
0385 "In other words, large gamut working spaces, improperly handled, can lead to "
0386 "lost information on output. Small gamut working spaces can clip information "
0387 "on input. Here is some oft-repeated advice:"
0388 msgstr ""
0389 
0390 #: ../../color_management/working_space.rst:120
0391 msgid "For images intended for the web, use sRGB."
0392 msgstr ""
0393 
0394 #: ../../color_management/working_space.rst:122
0395 msgid ""
0396 "For the most accuracy in your image editing (that is, making the most of "
0397 "your *bits* with the least risk of banding or clipping when you convert your "
0398 "image from your working space to an output space), use the smallest working "
0399 "space that includes all the colors in the scene that you photographed, plus "
0400 "a little extra room for those new colors you intentionally produce as you "
0401 "edit."
0402 msgstr ""
0403 
0404 #: ../../color_management/working_space.rst:124
0405 msgid ""
0406 "If you are working in 8-bits rather than 16-bits, choose a smaller space "
0407 "rather than a larger space."
0408 msgstr ""
0409 
0410 #: ../../color_management/working_space.rst:126
0411 msgid ""
0412 "For archival purposes, convert your RAW file to a 16-bit TIFF with a large "
0413 "gamut working space to avoid loosing color information. Then convert this "
0414 "archival TIFF to your working space of choice (saving the converted working "
0415 "TIFF under a new name, of course). See here for more details."
0416 msgstr ""
0417 
0418 #: ../../color_management/working_space.rst:132
0419 msgid "digiKam Queue Manager Allows to Batch Convert Color Space"
0420 msgstr ""
0421 
0422 #: ../../color_management/working_space.rst:135
0423 msgid "Gamma Properties"
0424 msgstr ""
0425 
0426 #: ../../color_management/working_space.rst:137
0427 msgid ""
0428 "The gamma of a color profile dictates what power transform needs to take "
0429 "place to properly convert from an image's embedded color profile (perhaps "
0430 "your working color space or your camera color profile) to another color "
0431 "profile with a different gamma, such as your chosen working space, or the "
0432 "display profile used to display the image on the screen or perhaps from one "
0433 "working space to another, or perhaps from your working space to your "
0434 "printer's color space. `Libraw <https://www.libraw.org/>`_ outputs a 16-bit "
0435 "image with a linear gamma, which means that a histogram of the resulting "
0436 "image file shows the actual amount of light that each pixel on the camera "
0437 "sensor captured during the exposure (paraphrasing this page). (Which is why "
0438 "at present applying a camera profile to the Libraw output also requires "
0439 "applying an appropriate gamma transform to get to the desired working space, "
0440 "unless the camera profile also uses gamma=1.)"
0441 msgstr ""
0442 
0443 #: ../../color_management/working_space.rst:139
0444 msgid ""
0445 "One practical consequence of the gamma of a working space is that the higher "
0446 "the gamma, the more discrete tones are available for editing in the shadows, "
0447 "with consequently fewer tones available in the highlights. Changing the "
0448 "gamma of an image redistributes the number of tones available in the lighter "
0449 "and darker areas of an image. Theoretically, if you are working on a very "
0450 "dark-toned (low key) image you might want a working space with a higher "
0451 "gamma. And if you are working on a high key image, say a picture taken in "
0452 "full noon sunlight of a wedding dress with snow as a backdrop, you might "
0453 "want to choose a working space with a lower gamma, so you have more "
0454 "available tonal gradations in the highlights."
0455 msgstr ""
0456 
0457 #: ../../color_management/working_space.rst:141
0458 msgid ""
0459 "Theory aside, in the real world of real image editing, almost everyone uses "
0460 "working spaces with either a gamma of either 1.8 or 2.2. sRGB and L*-RGB are "
0461 "two notable exceptions."
0462 msgstr ""
0463 
0464 #: ../../color_management/working_space.rst:143
0465 msgid ""
0466 "sRGB uses a transfer function close to that of a CRT (and thus not "
0467 "necessarily relevant to image editing or to display on an LCD). Unlike most "
0468 "other RGB color spaces the sRGB gamma can not be expressed as a single "
0469 "numerical value. The overall gamma is approximately 2.2, consisting of a "
0470 "linear (gamma 1.0) section near black, and a non-linear section elsewhere "
0471 "involving a 2.4 exponent and a gamma (slope of log output versus log input) "
0472 "changing from 1.0 through about 2.3, which makes for some complicated math "
0473 "during image processing."
0474 msgstr ""
0475 
0476 #: ../../color_management/working_space.rst:145
0477 msgid ""
0478 "L*-RGB uses as its transfer function the same perceptually uniform transfer "
0479 "function as the CIELab color space. *When storing colors in limited "
0480 "precision values* using a perceptually uniform transfer function *can "
0481 "improve the reproduction of tones*."
0482 msgstr ""
0483 
0484 #: ../../color_management/working_space.rst:147
0485 msgid ""
0486 "In addition to gamma=1.8 and gamma=2.2, the only other gamma for a working "
0487 "space that gets much mention or use is linear gamma, or gamma=1.0. As noted "
0488 "above, `Libraw <https://www.libraw.org/>`_ outputs linear gamma files if you "
0489 "ask for 16-bit output. Linear gamma is used in HDR (high dynamic range) "
0490 "imaging and also if one wants to avoid introducing gamma-induced errors into "
0491 "one's regular low dynamic range editing."
0492 msgstr ""
0493 
0494 #: ../../color_management/working_space.rst:149
0495 msgid ""
0496 "**Gamma-induced errors** is a topic outside the scope of this manual but "
0497 "it's commonly-encountered that gamma-induced error that is caused by "
0498 "incorrectly calculating luminance in a nonlinear RGB working space. And in a "
0499 "similar vein, the calculations involved in mixing colors together to produce "
0500 "new colors (such as using a digital filter to add warmth to an image) result "
0501 "in gamma errors unless the new colors are calculated by first transforming "
0502 "all the relevant values back to their linear values."
0503 msgstr ""
0504 
0505 #: ../../color_management/working_space.rst:151
0506 msgid ""
0507 "Unfortunately and despite their undeniable mathematical advantages, linear "
0508 "gamma working spaces have so few tones in the shadows that they are "
0509 "impossible to use for editing if one is working in 8-bit, and still "
0510 "problematic at 16-bit. When the day comes when we are all doing our editing "
0511 "on 32-bit files produced by our HDR cameras on our personal supercomputers, "
0512 "We can predict that we will all be using working spaces with gamma=1."
0513 msgstr ""
0514 
0515 #: ../../color_management/working_space.rst:154
0516 msgid "Tonal Steps and Gamut Size"
0517 msgstr ""
0518 
0519 #: ../../color_management/working_space.rst:156
0520 msgid ""
0521 "How many discrete tonal steps are there in a digital image? In an 8-bit "
0522 "image, you have 256 tonal steps from solid black to solid white. In a 16-bit "
0523 "image theoretically you have 65536 steps. But remember, those 16-bit started "
0524 "out as either 10-bit (=1024 steps), 12-bit (=4096 steps), or 14-bit (=16384 "
0525 "steps) as produced by the camera's A-to-D converter - the extra bits to "
0526 "reach 16-bit start out as just padding. The available tones are not "
0527 "distributed evenly from light to dark. In linear gamma mode (as the camera "
0528 "sensor sees things), there's a whole lot more tones in the highlights than "
0529 "in the shadows. Hence the advice, if you shoot RAW, to expose to the right "
0530 "but don't blow the highlights."
0531 msgstr ""
0532 
0533 #: ../../color_management/working_space.rst:158
0534 msgid ""
0535 "One major consideration in choosing a working space is that some working "
0536 "spaces are bigger than others, meaning they cover more of the visible "
0537 "spectrum (and as a consequence include some imaginary colors - mathematical "
0538 "constructs that don't really exist). These bigger spaces offer the advantage "
0539 "of allowing you to keep all the colors captured by your camera and preserved "
0540 "by the `Lcms <https://www.littlecms.com/>`_ conversion from your camera "
0541 "profile to the super-wide-gamut profile connection space and out again to "
0542 "your chosen working space."
0543 msgstr ""
0544 
0545 #: ../../color_management/working_space.rst:160
0546 msgid ""
0547 "But keeping all the possible colors comes at a price, as explained below. "
0548 "And it seems that any given digital image likely only contains a small "
0549 "subset of all the possible visible colors that your camera is capable of "
0550 "capturing. This small subset is easily contained in one of the smaller "
0551 "working spaces."
0552 msgstr ""
0553 
0554 #: ../../color_management/working_space.rst:162
0555 msgid ""
0556 "Using a very large working space means that editing your image (applying "
0557 "curves, increasing saturation, etc.) can easily produce colors that your "
0558 "eventual output device (printer, monitor) simply cannot reproduce (you "
0559 "cannot see these colors while you're editing, either). So the conversion "
0560 "from your working space to your output device space (say your printer) will "
0561 "have to remap the out-of-gamut colors in your edited image, some of which "
0562 "might even be totally imaginary, to your printer color space with its much "
0563 "smaller color gamut."
0564 msgstr ""
0565 
0566 #: ../../color_management/working_space.rst:164
0567 msgid ""
0568 "This remapping process will lead to inaccurate colors and loss of saturation "
0569 "at best. Even worse, the remapping can easily lead to banding (posterization "
0570 "- gaps in what should be a smooth color transition, across an expanse of "
0571 "blue sky) and clipping (e.g. your carefully crafted muted transitions across "
0572 "delicate shades of red, for example, might get remapped to a solid block of "
0573 "dull red after conversion to your printer's color space). Also, the experts "
0574 "say that 8-bit images just don't have enough tones to stretch across a wide "
0575 "gamut working space without banding and loss of saturation, even before "
0576 "conversion to an output space. So if you choose a large gamut working space, "
0577 "make sure you start with a 16-bit image."
0578 msgstr ""
0579 
0580 #: ../../color_management/working_space.rst:171
0581 msgid ""
0582 "The digiKam Color Profile Properties Dialog Displaying BestRGB Information"
0583 msgstr ""
0584 
0585 #: ../../color_management/working_space.rst:173
0586 msgid ""
0587 "To summarize, large gamut working spaces, improperly handled, can lead to "
0588 "lost information on output. Small gamut working spaces can clip information "
0589 "on input. Medium-sized gamut working spaces try to strike a happy medium."
0590 msgstr ""
0591 
0592 #: ../../color_management/working_space.rst:175
0593 msgid "Here are some oft-repeated bits of advice on choosing a working space:"
0594 msgstr ""
0595 
0596 #: ../../color_management/working_space.rst:177
0597 msgid ""
0598 "For images intended for the web, use (or at least convert the final image "
0599 "to) sRGB."
0600 msgstr ""
0601 
0602 #: ../../color_management/working_space.rst:179
0603 msgid ""
0604 "For the most accuracy in your image editing (that is, making the most of "
0605 "your limited *bits* with the least risk of banding or clipping when you "
0606 "convert your image from your working space to an output space), use the "
0607 "smallest working space that includes all the colors in the scene that you "
0608 "photographed, plus a little extra room for those new colors you "
0609 "intentionally produce as you edit."
0610 msgstr ""
0611 
0612 #: ../../color_management/working_space.rst:181
0613 msgid ""
0614 "If you are working in 8-bits rather than 16-bits, choose a smaller rather "
0615 "than a larger working space to avoid clipping and banding."
0616 msgstr ""
0617 
0618 #: ../../color_management/working_space.rst:183
0619 msgid ""
0620 "For archival purposes, convert your RAW file to a 16-bit TIFF with a large "
0621 "gamut working space to avoid loosing color information. Then convert this "
0622 "archival TIFF to your medium-gamut or large-gamut working space of choice "
0623 "(saving the converted working TIFF under a new name, of course)."
0624 msgstr ""