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Author 1.6x crop factor
slugger_54132
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Registered: 4th Feb 03
Location: Fair Oak, Hampshire
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8th Nov 05 at 12:46   View User's Profile U2U Member Reply With Quote
Now i know the canon, 350d, along with others has a 1.6x crop factor when used with an ef lense, such as a 28-105, so this makes it appear to be a 44.8-168.

But with an ef-s lense, the ones designed for digital, so like the crappy 18-55 and the more expensive 10-22, do you have to apply the 1.6x crop factor to them or has the manufacturer already taken this into account?
vibrio
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Registered: 28th Feb 01
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8th Nov 05 at 19:26   View User's Profile U2U Member Reply With Quote
yes the 1.6 still works for thpse so my 10-22 becomes a 16-35
slugger_54132
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Registered: 4th Feb 03
Location: Fair Oak, Hampshire
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8th Nov 05 at 23:29   View User's Profile U2U Member Reply With Quote
so the 18-55 becomes 29-88??
Ian
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Registered: 28th Aug 99
Location: Liverpool
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9th Nov 05 at 00:25   View Garage View User's Profile U2U Member Reply With Quote
Indeed.

Any published focal length suffers from the crop factor, even though some lenses are EF-S fitment and only designed for 1.6 crop bodies, they all share a common focal length scale.
slugger_54132
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Registered: 4th Feb 03
Location: Fair Oak, Hampshire
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9th Nov 05 at 09:05   View User's Profile U2U Member Reply With Quote
excellent!

 
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