I LOVE this lens! It really is my go-to wide lens (using it on Canon 5D). My copy is very sharp wide open. Great for indoor, low-light situations. The fact that is focuses so closely is an added bonus and makes for a very versatile lens. It's built like a tank. The MF switch/clutch mechanism takes some getting used to. I also wish it had USM/HSM for quieter (and quicker) focusing. Given the performance of the lens, these are things I can live with. If they ever update this model, I'd jump on it in a heartbeat.
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