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Photography F.A.Q (Last Updated: 2025 Feb 03 6:38 am)
Attached Link: http://www.mediachance.com/digicam/index.html
Those look like pixel hot spots typical of some low light shots with digital cameras. Dunno why PS would be doing that. Do they show in other viewers besides PS? There's a hot spot fixer at this link, but it isn't very good.That's from digital cameras that can't deal with low light conditions. I doubt PS introduced those, but PS might well show them. I see this in PS 5.5 as well but I don't see this in other image viewers. They're still there though. They can be changed one pixel at a time with the eyedropper and brush tool. The quality of the camera at low light has all the world to do with this. Now I'd be surprised to hear if these were flatbed scanned photos. Shouldn't happen with that.
I agree that some low light shots will show with adigital camera. However, the Blue & Red were not there last night. I swear they weren't. I have an image that I saved from the exact same copy that the above came from and it shows nothing. It does show in all viewers I have, PS6, PS7, ACDSEE, and Lviewpro. I tool it back to PS6 and cleamed up each dot. Took 2.5 hours. I will post that image in another thread. Wierd. Thanks all! Magick Michael
Take some pictures with the camera in a totally dark room, or with the lens cap on, at different zoom settings, shutter speeds, exposure settings, compression settings and at different CCD pixel resolutions...that way you should be able to see if you do have hot pixels in the CCD of the camera. I must admit that the blue "blotches" do look like compression artifacts to me though. Cheers
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Ohhh, the "spots" also have JPEG artifacts around them, so if any of the images above are original images then the spots were created within the camera. Cheers
Website: The 3D Scene - Returning Soon!
Twitter: Follow @the3dscene
--------------- A life?! Cool!! Where do I download one of those?---------------
"Try opening a good pic and saving in .bmp format and see what happens. I don't think bitmaps compress. There is ALWAYS data loss in compressions" not true - some image formats use what is called lossless compress - compression that does not involve data loss. for example, lzw compression in the .tif format. i think .png is lossless as well, and gives better compression than .tif
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