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Best camera for the panasonic leica dg 9mm f 1 7?

The 9mm f/1.7 is a Micro Four Thirds prime, so any body in that system will take it. On that sensor it frames like 18mm on full frame, a wide view that suits landscapes, interiors and street.

I'd pair it with one of these:

Pick the body for how you shoot, since the lens works on all of them. If you're still weighing up sensor formats, sensor sizes explains why Micro Four Thirds gives this lens its wide framing.

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