Cheaper than many fully-manual budget lenses, the Canon EF 50mm F/1.8 II STM (and its variants) is fairly ubiquitous. Below are some evaluation images I shot using this lens on a Canon EOS 6D. A Hoya Intensifier filter was also used to help lessen the light pollution effects from the red zone I live in.
Corner/Edge Performance
The following mosaics were made from 100% crops using light frames shot on a Canon EOS 6D body (unmodified) at ISO1600 from a red zone. Exposure times started at 3.2 seconds at F/1.8, 4 seconds at F/2.0, and then doubled with each successive aperture stop after that. A Hoya Intensifier LPS filter was used to reduce the effects of light pollution. Use the gallery below to cycle through light frames gathered at different apertures (click to view full-sized images).
Vignetting
Full-frame users may be disappointed by the vignetting performance of this lens. Vignetting remains strong even through f/2.8 and doesn’t much better unil f/4.0. APS-C users will be much happier, with decent vignetting around f/2.0 and becoming very good by f/2.8.
Sample Images
Figure 1: Taurus and the Pleiades, Canon EOS 70D, 80x180sec stack, ISO1600, f/3.2, Prints Available. Read more about how this image was created here.