EF-S & EF Lenses
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08-02-13, 02:17 PM
Join Date: Jul 2009
Location: Toronto, ON, Canada
Originally Posted by
I have a crop sensor dslr, a canon.
If i was to buy an EF-S lens, say a 20mm, would it be just that, 20mm?
If I was to buy an EF lens at 20mm would it fit on a crop sensor camera and would it still be 20mm or would it be effectively 32mm because of the 1.6 crop factor?
Are EF-S lenses designed for crop sensor camera's and EF lenses for full frame cameras?
If so, are the two interchangeable with crop sensor's and full frame dslr's?
I will se quick
Yes, sort of
Yes, and that is the "sort of" from above
EF and EF-S will fit on crops, but only EF on full frame.
So for the first one, EF-S lenses, even though they are designed for crop sensors are still labeled as if they were for full frame. So 20mm is 20mm.
Someone may come in and give all sorts of angle of view stuff and get very detailed, but we are keeping it simple.
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