Crop vs. FF equivalent with class L

You can shoot at F8-F11 and get the same results. Lower noise on FF allows you to shoot at higher ISO to get the same shutter speed. And Diffraction sets in at higher F-stops so going higher doesn't degrade the image quality.

What if ISO 3200 on FF looks as good as ISO 800 on your 7D? Well, it's pretty close, and it allows 4x the shutter speed, or you can stop down from F5.6 to F11 to get more DOF at the same shutter speed.

Also add if you shoot low light, nighttime sports, shoot portraits and WANT shallow DOF. And I use the 5DmkII for even daytime sports - and crop the heck out of the images. So the wider angle long lens issue is a moot point, too.

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Bossier City, Louisiana
http://www.pbase.com/ericsorensen/photography
Shreveport Photographic Society: http://www.spsclub.org/