What are the alternatives to the fujifilm xf 50 140mm f 2 8 r lm ois wr?

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From Fujifilm XF 50-140mm f/2.8 R LM OIS WR: Fujifilm XF 50-140mm f/2.8 R LM OIS WR: A zoom lens by Fujifilm for APS-C cameras, 50-140mm f/2.8. Specs - Maker: Fujifilm - Focal length: 50-140mm (zoom) - Maximum aperture: f/2.8 - Made for: APS-C sensors - Mounts: Fujifilm X - Stabilised: yes - Autofocus: yes What it frames like - On APS-C (Fujifilm X): like 75-210mm on full frame; f/2.8 gives about the depth of field of f/4.2 there. Cameras it fits - Fujifilm X-E1: APS-C - ...

From Focal length converter: Aperture and depth of field: The f-number sets exposure, and that doesn't change with sensor size: f/2.8 gives the same brightness on a phone as on medium format. Depth of field does change. At the same framing, multiply the f-number by the crop factor to get the full-frame aperture with the same depth of field: f/1.8 on APS-C gives about the background blur of f/2.7 on full frame, and f/1.8 on Micro Four Thirds about ...

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