I was looking at the 17-40mm f/4 lens. Would it be ideal for my 450D body?
I've been comparing lenses with my 18-55mm
HERE. What does it mean by it has a Full Time Manual Focus?
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Canon 450D
Canon 18-55mm EF-S F/3.5-5.6 II
Canon 75-300mm EF F/4-5.6 III
Canon EF-S 18-135mm f/3.5-5.6 IS
Sigma 10-20mm F/4-5.6 EX DC HSM