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The original version of Photoshop CS5 (which uses Adobe Camera Raw version 6.0) did not support the Canon 550D. Adobe later released Camera Raw version 6.1 which does include support for the 550D and which is also compatible with CS5. The last version of Adobe camera Raw that works with CS5 is version 6.7. Ask the owner of the PC at your classes if they can ...


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If you layer those in Photoshop and use subtract or difference blend modes, you'll end up with a result that should show the relative difference of each pixel. Use that result to create a mask (Image > Apply Image, target layer mask) Then starting with the first image, add an exposure adjustment layer, and use the above mask - I would expect you'd get ...


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Not a Photoshop-based answer: You are making things difficult for yourself with your granite background. The first thing to do is to shoot your objects against a plain background, then if needed you select the background and not the object, then invert the selection (but if done properly you can get a background so white that you won't even need to cut it ...


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The quick selection tool has two modes: adding and removing. When you're adding, the cursor has a + sign inside it; when you're removing, the cursor has a - sign inside it. When the tool has gone too far, as in your picture, start removing. Click the icon in the top tool bar that shows the - sign, and start dragging in the part that should not be in the ...


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I have used the free software Hugin to achieve this. Although primarily for building panorama's Hugin is a GUI for various tools including align_image_stack for aligning stacks of images in preparation for creating focus stacks or HDR blends with enfuse. With a little experimentation you can use the tools either from the command line or from within Hugin. ...


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I don't have an explanation on why one image becomes darker when merged, but perhaps "reversing" the process might help, first creating three panorama images, one per exposure setting (-1, 0, +1 EV), then running the HDR processing one those three images?


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I assume your question is, how can I read them on another PC? Photoshop CS5 should include Adobe Camera Raw, which should have no problem reading RAW files. Failing that, you could see if the class will allow you to download something like RAWTherapee, an open source RAW editor.


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Check the version of DPP installed on your computer. The DPP version on your computer should be the one that is compatible with your camera. Higher version is not necessarily the best for your camera. I faced the same issue as you had. My camera was 550D and the DPP I had installed on my computer was v3.5.x (which was downloaded off the Internet because I ...


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