Lenses for SLR and DSLR cameras

This is a table how the focal lengths of the old lenses for 35mm analogue SLR cameras translate to those of newer APS-C sized Canon image sensor based digital SLRs. I wrote this post to know about the equivalent focal lengths for my Canon Rebel T3 and my old lenses.

Make Lens Name Lens originally made for 35 mm equiv APS-C with crop factor 1.6
Canon EF-S 18-55mm f/3.5-5.6 IS II APS-C 28.8 - 88 18 - 55
Canon EF 28-105mm f/3.5-4.5 USM 35mm 28 - 105 44.8 - 168
Tamron AF 55-200mm 4-5,6 Di II LD APS-C 88 - 320 55 - 200

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