Best camera for the voigtl nder apo lanthar 90mm f 4 close focus?

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From Voigtländer APO-Lanthar 90mm f/4 Close Focus: Voigtländer APO-Lanthar 90mm f/4 Close Focus: A prime lens by Voigtländer for Full frame cameras, 90mm f/4. Specs - Maker: Voigtländer - Focal length: 90mm (prime) - Maximum aperture: f/4 - Made for: Full frame sensors - Mounts: Leica M - Stabilised: no - Autofocus: no, manual focus What it frames like - On full frame (Leica M): as marked, 90mm. Cameras it fits - Leica M9: Full frame - Leica M9-P: Full frame - [Leica ...

From Portraits: The camera: What matters most is eye autofocus, which current mirrorless cameras do very well: it finds the nearest eye and tracks it, so wide apertures stay sharp. Full frame gives you more background blur at the same f-number than APS-C, but a fast APS-C lens closes most of that gap for far less money; see sensor sizes.

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