24mm

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Canon kit lens wins again - though I suspect I jostled the Tamron slightly in the first shot, it's way softer at the edge of the frame, and somewhat on the kitty.

I was somewhat inexact with my exact zoom (24vs 23mm).. it's actually really hard to be exact with nothing but the lens markings to go on. I don't claim that these are scientific tests; in fact, the lab bunnies may be responsable for jostling the tripod in the first place.