Is the 7artisans 4mm f 2 8 fisheye good for astrophotography?

I haven't written a guide on astrophotography, so I can't say how this lens performs on the night sky. What I can tell you is that the 7Artisans 4mm f/2.8 Fisheye is a 225-degree fisheye with a fast f/2.8 aperture, and it's manual focus only, with no stabilisation. Those are the features that matter most for stars, so it's worth a look if you want a very wide view of the sky.

For the exposure side, the Lenses guide explains why a wider aperture gathers more light, and the focal length converter shows how the crop factor changes depth of field on your camera. Check the lens page for the cameras it fits before you buy.

Written by Claude from this site's pages.