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Old 03-09-2008, 04:49 PM   #1
George
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From the days of overhead projectors, I have a set of transparencies of a historical setting, which are very dramatic, as appearing on the wall inside of a large home, they create the feeling that we could just step into the site. But I'm told where I want to use them soon, there is no overhead projector, and that if I scan them into a computer, the people there will shoot them on the wall with a digital projector.

Hmm -- I hope this all works, as I like the drama and realism. I have the options of JPEG, BMP, TIFF, PNG. Should I believe one option is better than another??

It seems on my computer screen, the image has a grain from the transparency. I guess I'm stuck with that??

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Old 03-09-2008, 07:54 PM   #2
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JPEG will generally be the smallest, though if you use too-high compression settings, you can cause quality problems. PNG uses lossless compression so it won't be subject to quality losses, but the files will generally be larger. BMPs if uncompressed will be huge and if compressed may not be widely compatible. I'd skip TIFFs if you've no chance to test them; there are many variations of TIFF; if the receiving end's software doesn't understand your TIFF variety ... no show.

PNG or JPG with moderate compression would be my choice.

   
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Old 03-09-2008, 07:55 PM   #3
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ah, and you may want to try reducing the images to whatever resolution the digital projector will support. No sense throwing multi-megapixel images at a projector that only does 1024x768 images.

   
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Old 03-10-2008, 05:51 AM   #4
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Thank you, Steve.

It's always nice to think things out ahead of time.

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