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Anonymous
"Digital lens" is a term that pisses me the fuck off. Come on guys, ever hear a 5D or D700? Digital lenses are lenses that have a crop factor over 35mm styled lenses, so they work on crop sensors letting you have shit like 17-55 at F/2.8. Some will work on full frame or film with a big black vignette, and some won't. (The EF-S series goes too far into the body, so if you mount one on, say, a 1D, the mirror will thwack it) Going the other way is no problem. I've only got one lens that wouldn't work on FF, and 3 that would. Non-digital lenses (FFS, I hate that term!!) allow the cropped sensor to catch the sweet spot of the lens. Less vignetting, sharper, etc. If you wanted a version of the 75-300 for a Rebel or xxD camera, you'd prolly be looking at the 55-250.
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