Is the pentax hd fa 43mm f 1 9 limited worth it?

It depends on what you shoot and which body you put it on. The 43mm f/1.9 is a sharp, fast prime with autofocus, but it isn't stabilised, so you'll rely on the f/1.9 aperture and your shutter speed in dim light.

On the Pentax K-1 Mark II, it frames as a natural, slightly tight standard view. On an APS-C body like the Pentax K-3 Mark III, it becomes roughly a 64mm view, which is more of a short telephoto. That suits portraits and details well, but it's not a general-purpose walk-around lens.

If you want one fast lens for people, I'd still start with a 50mm f/1.8 on full frame. Check the sensor guide before paying for full frame, and see your first lenses for a sensible order to build a kit.

Written by Claude from this site's pages.