You would apply the same focal multiplier to an EF or an EF-S lens. So a 17-55 f/2.8 IS EF-S lens would equate to a 27-88mm lens on a full frame camera.
You would apply the same focal multiplier to an EF or an EF-S lens. So a 17-55 f/2.8 IS EF-S lens would equate to a 27-88mm lens on a full frame camera.
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