Projection of images and the question of the color space

We are having a discussion in our photo club. We use a projector to project the images of the competition. For years, we used Faststone Viewer to project images. We have the usual problems of people not calibrate their monitors and sometimes the colors match does not, but it worked pretty well.  Now that the people who handle the projection are competent in LR, they use LR on a Windows laptop, to organize and display the images via the projector. The projector is a projector of sRGB VGA.  Some argue that LR will cause problems because it uses the Adobe RGB color space as the space of display colors. (We know that the native color space is ProPhoto). Others think it will display images in space sRGB color to the projector as you can when you export an image. I can't find anything in Adobe help pages on this subject.

Here is a contribution to the debate to give you an idea of what some people are talking about:

I understand that LR will send bits of images (in the Adobe RGB color space) to the Windows API and in turn the bits are returned on the LCD screen and exit VGA via LCD/VGA color profiles associated. That is my understanding of the viewer FastStone sends the image bits being without modification in the color space. LR sends the bits altered the Adobe RGB color space. Assuming that both programs require the same Windows API, the images must return the same, but they do not. My conclusion is that the former is in sRGB and the latter in Adobe RGB. I guess they call the same APIs because you can open a jpeg file in Windows Picture Viewer (applet in Win7) and see a different rendering of FastStone, it does not use the color managed API.

Anyone who can shed some light on this delicate subject?

You actually want an app like Lightroom or Bridge to view images on your projector and not the unmanaged faststone Viewer or something like. Lightroom translated correctly the image on the destination for the projector profile regardless of the original color of images space. It is best to calibrate them and profile projector in addition to your monitor. Some of the highest fine adjustment washers support projectors too. It is rare that these projectors really are sRGB. They are usually somewhat narrower. Some of the more recent are wider gamut when using LEDs or lasers instead of bulbs.

Tags: Photoshop Lightroom

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