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Old Sep 14, 2008, 2:54 PM   #1
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Join Date: Mar 2005
Posts: 43

ok i was chatting with a guy at work who just told me he bought a full frame canon EOS 5D.

my question is:

if he is shooting at 28mm

and if i was shooting camera at 18mm with a 1.5 crop factor wouldnt it be the same? (18*1.5=27mm)
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Old Sep 14, 2008, 3:28 PM   #2
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Location: Washington, DC, Metro Area, Maryland
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Yes. The angle of view of a 28mm lens on a full frame dSLR is (roughly) the same as the angle of view of an 18mm lens on an APS-C dSLR.

See http://www.tamron.com/lenses/learnin...comparison.php

The 'Crop Factor' doesn't actually change the focal length; it just changes the angle of view.
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