39

This has bothered me for years, especially on laptop screens that have no hardware calibration option. Here's an instant fix: Windows Registry Editor Version 5.00 [HKEY_CURRENT_USER\Control Panel\Mouse] "MouseTrails"="-1" Save that as a .reg, merge it and then Log Off/On. With mouse trails enabled windows uses a different render for the cursor which in ...


29

Check out this image by Jeff Schewe from wikipedia. It's a 2D slice of what's really a three-dimensional space, but it makes the basic concept clear: So: sRGB is a subset of AdobeRGB, which is a subset of ProPhoto RGB. You can also see how ProPhoto RGB extends outside of the curved shape which represents visible colors. And you can see how AdobeRGB is a ...


23

Other users gave great answers about tuning your computer. However since you mentioned costco, this is a costco specific answer: I've sent many prints to costco and had great luck. However not so much, before I realized that they were "auto correcting" images. One batch of birth announcements I had to send three times because the color was "off" no matter ...


17

I've had exactly the same issue and it is possible to arrive at a correct and workable solution. There are a lot of misconceptions both in the question and the previous answers (and indeed, around colour management in general), so let me try to clear them up and provide you with an answer. First, the misconceptions... Regular (non-wide) monitors do not "...


17

Color laser printers, especially the big high end office printers, have the color capabilities you need for printing the company logo and the occasional Excel pie chart — but they are truly bad for printing photos. But the good news is that almost any of the current generation of ink jet printers, even the cheap ones, are pretty good at printing photos - ...


16

I expect you are looking at the exported JPEG photos with some program which does not properly take the color space into account — it just assumes sRGB, the standard default. So, only your photos exported to match that expectation work. (Even if your screen is calibrated, your applications might not be so smart.) Keep in mind that Adobe RGB is a color space ...


16

Ideally, you're shooting in an environment with controlled lighting (a single light source, or several tuned to same color temperature), your subject and black or white surfaces only. In this case, the angle does not matter - just take care that its exposure falls somewhere in the middle in your test shot (so you're not accidentally clipping a channel). In ...


15

Since you can't do anything about the color management of other people's monitors, the best you can do is: Make sure your own system is properly color managed (see other questions here on color management). That way, you are at least certain that you're starting from a known point. This is really worth doing even though it takes some effort and probably a ...


15

OK... I used to run a print shop so i think i qualify to answer this. Any print shop that can print 36x20 inhouse will be using a large format inkjet printer, id say Epson, HP or Canon. Assuming the printer is reasonably new (IE < 4 years) it will almost definitely use good inks - in Epson's case UltraChrome. IF the print shop uses a constant feed ink ...


15

Inherently, no. The RGB model is natural for recording light, and the CMYK model is natural for printing (where reflected light is subtracted). But see Are RGB numeric values equal to CMYK percentages? — the loss in conversation isn't inherently because RGB to CMYK is inherently lossy, but because the actual color spaces of the devices used are different, ...


14

I have one. You're right — it's a good value for the money, and there's basically no catch except that if you're running under Mac or Windows you'll need to know a little more about what you're doing than you might if you just bought one of the big-name devices. That's because there's only software for Linux. If you are using Linux (any modern distribution),...


14

The color correction is acting as expected. The point of using a color target is to adjust for the color of light to assume that the light is white. If you want to have the color that is present when shooting, you should instead use a fixed white point that you consider to be standard white, but naturally people's eyes will adjust quite a bit for the color ...


11

xvYCC is a particular clever way of encoding color data: it abuses the YCC representation by using previously-forbidden combinations of values to represent colors outside the gamut of the RGB space used in the YCC scheme. That is, some YCC tuples decode to colors with negative R G or B values. Previously these were simply illegal; in xvYCC these are ...


11

Color management is an annoyance that I've recently been learning about; it is not completely accurate to say that just because your monitor can only display sRGB that it's meaningless for your photos to be edited in the AdobeRGB or ProPhotoRGB space. What is actually happening is that Lightroom is translating colors from ProPhotoRGB into the sRGB space ...


10

The answer is: yes — color management must be enabled in both places, and the profile must be loaded in each application. The system-wide profile does two things: Loads the Video LUT at login. This look-up-table includes color temperature and gamma correction, but that's it. (This is via gcm-apply) Provides a way (using colord, on modern systems) for ...


10

Printing a picture seems like it should be easy but there is a lot more involved when it comes to getting predictable colors from what you see on the screen to the print. The first step is calibrating your monitor. This ensures that your monitor is displaying colors correctly. You can purchase a calibrator from companies such as Colorvision (Spyder series) ...


10

These cameras have microadjustment capability, just not in a user-accessible way. The exact method varies by model. Some have a software feature in an advanced (and secret) "debug" menu — the Pentax K10D, for example, had this. Others have physical adjustment screws or similar (like earlier Canon Rebel models). Or, repair centers may simply use shims. To ...


9

It is pretty much impossible, although you can get closer. At the very least you need a color-calibration device. Using that device you calibrate your screen so that the colors it can show are close to how they should be. Most laptop displays sadly only show 60-75% of sRGB color, so there can be up to 40% of colors you cannot see in the laptop. Instead they ...


9

If everything is working correctly, the difference should be subtle and you shouldn't generally notice a big shift. I have a suspicion: You may be working on a monitor which is not capable of rendering the whole Adobe RGB gamut. In this case, out-of-gamut colors are clipped or approximated (perhaps poorly). When you convert to sRGB, the colors are mapped ...


9

from Charles Poynton "The rehabilitation of gamma": Misconception: The nonlinearity of a CRT monitor is a defect that needs to be corrected. Fact: The nonlinearity of a CRT is very nearly the inverse of the lightness sensitivity of human vision. The nonlinearity causes a CRT’s response to be roughly perceptually uniform. Far from being a defect, ...


9

Hopefully someone more knowledgeable than me will complete my response. The little I know about these curves follows: 1) Characteristic Curves: The more a negative is exposed, the darker it gets. The log-log density/exposure curves simply show how dark the film gets in response to more exposure. These lines do not coincide on color negatives, because of ...


8

Exiftool is a command-line utility that does exactly what you're after. Check out the ICC profile documentation.


8

There are several issues related to Phase Detection Auto Focus performance. You first must determine what the source of the problem is. It could be caused by one of several factors, or a combination of some or all of them. If you also have the problem when using the Contrast Detection AF in Live View, then the problem is somewhere else. Front/Back focusing. ...


8

The color of sunlight reaching the surface changes based on the thickness and quality (in terms of things like particulate matter and water vapor suspended in it) of the air it passes through. Whether the sun is at an angle 30º above the horizon because it is noon in winter at a high latitude or because it is 4 p.m. in the tropics doesn't make much ...


8

Yes - you need to calibrate your monitor. One option, which is what I did, is to buy a relatively cheap colorimeter, at the time the Huey Pro was generally available. I used it as a travel colorimeter. Later, when I wasn't traveling as much, I bought a more expensive colorimeter (Lacie Blue-Eye Pro) for my home IPS monitor. I found that the cheaper ...


8

TLDR: Choose a print shop that provides ICC profiles. Soft proofing is an important step for optimal results. If a shop doesn't share its profiles there are two reasons that come to my mind: lack of knowledge (very bad), or different printer types for the same printing product, meaning multiple orders could give different results even with the same ...


7

If you have a Mac, you can visualize differences between color spaces in 3D - run ColorSync Utility, and select a large color space (like ProPhotoRGB or AdobeRGB). Then click on the arrow at the upper left corner of the plot, and select "hold for comparison". Then select a different space to see it plotted on top of the other one, you can rotate all around....


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