You asked

Fujifilm xf 16 50mm f 2 8 4 8 r lm wr vs tamron 16 50mm f 2 8 a?

Here is what the site says about that.

From Fujifilm XF 16-50mm f/2.8-4.8 R LM WR: Fujifilm XF 16-50mm f/2.8-4.8 R LM WR: A zoom lens by Fujifilm for APS-C cameras, 16-50mm f/2.8-4.8. Specs - Maker: Fujifilm - Focal length: 16-50mm (zoom) - Maximum aperture: f/2.8-4.8 (it gets darker as you zoom in) - Made for: APS-C sensors - Mounts: Fujifilm X - Stabilised: no - Autofocus: yes What it frames like - On APS-C (Fujifilm X): like 24-75mm on full frame; f/2.8-4.8 gives about the depth of field of f/4.2-7.2 there. Cameras ...

From Tamron 16-50mm f/2.8 A: Tamron 16-50mm f/2.8 A: A zoom lens by Tamron for APS-C cameras, 16-50mm f/2.8. A 305-gram constant f/2.8 standard zoom for APS-C mirrorless bodies. Specs - Maker: Tamron - Focal length: 16-50mm (zoom) - Maximum aperture: f/2.8 - Made for: APS-C sensors - Mounts: Sony E, Nikon Z, Fujifilm X, Canon RF - Stabilised: no - Autofocus: yes What it frames like - On APS-C (Sony E, Nikon Z, Fujifilm X): like 24-75mm on ...

Quoted from this site's pages.

From these pages