6 posts tagged “photography”

Thought I'd write up a single, rather long post, to keep my postcount within limits, and get some links grouped together Do you see a difference between Photoshop and another program? Likely this has something to do with (the other program not using) colormagement... For starters: Check whether the other program is color managed. AFAIK, Windows viewer is not (before Vista, that is), ACDSee (non Pro) is not, Breeze Browser is not, iView Media (non pro) is not, iPhoto is not (not sure about newer versions). A lot of web browser (anything on Windows, all but Safari and IE (when set) on OSX) do not use color management. Not sure about your browser? Try it here or here, or more dramatically: Here If you are using a working color space other then sRGB, the differences can be quite shocking. So, if you don't know a thing about color management, you might want to stick to sRGB. (Or learn a bit about color management) First off: there will *allways* be a (slight) difference between a non color managed application and PS, even displaying an sRGB file: That's the difference between your display profile and the sRGB standard. If you are comparing an image with a different working space then sRGB (AdobeRGB or ProfotoRGB for instance), you'll see a*huge* mismatch. The only 'solution' is to not use colormangement in PS (set 'Monitor Color' in PS color prefs). That throws color management out the window. Not a good solution IMHO: No way of telling what your image looks like on any other monitor or in print.... For more or less the same reason: *never, ever* use your monitor profile as working space! What works better, is to get a basic understanding of color management, and set up everything correctly. To do that, first check your monitor profile: Go to this page by Norman Koren. Scroll down, there are a few quick tests to see if your monitor is profiled more or less okay... If your monitor profile is corrupt, something like this might happen. (The solution was found at last: c...

One problem photographers have always faced is the fact that no medium yet invented can capture the tonal range our eyes can see. Film can’t get close to recording the brightness range of light that the human eye can perceive. This holds true for digital sensors as well. While some high-end sensors can record more tonal information than film, they still can’t record all the tonal variations the eye can see. The human eye can perceive a contrast ratio of 800:1; the best slide films, 30:1; and the best digital sensors, 40:1. So photography has always been about compromising. When shooting slide films, the old adage was “expose for the highlights, pray for the shadows.” With digital, that has changed a bit, especially with RAW files. You can process the RAW file two (or more) different ways and combine these images using an image-editing program to get the best of each exposure. When shooting with a digital camera in the RAW format, you have the capability of processing your image specifically for different exposure values, highlights, midtones and shadows. You can use this flexibility of the RAW format to your advantage when photographing scenes with a high dynamic range of light. Is it best to slightly underexpose or overexpose RAW images? When you lighten a dark RAW image, you risk adding a lot of noise to the shadow areas. When you darken a light RAW image, you might not have good highlight detail. I find when shooting under contrasty light that it helps to slightly overexpose the image and then process it twice—once to have more shadow detail and once to bring back the highlight detail.Start1 2 3 Next Tags: How To, Image Processing How To,