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Is the tamron 17 28mm f 2 8 di iii rxd good on aps c?

On APS-C, the Tamron 17-28mm f/2.8 Di III RXD works as a standard-to-short-telephoto zoom. It's a full-frame lens, so on an APS-C body it frames like 26-42mm, and f/2.8 gives about the depth of field of f/4.2. That's a useful, slightly tighter view for everyday shooting, portraits and street work. It's worth checking the sensor sizes guide if the crop is new to you.

It fits a good range of Sony APS-C bodies. For a sensible pairing, I'd look at the Sony a6400, Sony a6600 or Sony a6700. If you want to convert the numbers for a different sensor, the focal length converter walks through it.

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