You asked

Is the olympus m zuiko 25mm f 1 8 good in low light?

Yes, the 25mm f/1.8 is a good pick for low light. Primes gather far more light than kit zooms, and at f/1.8 this one does that well while staying small and autofocusing. On Micro Four Thirds it frames like a 50mm on full frame, which suits people, food, and everyday low-light shots. It isn't stabilised, so in dim rooms keep your shutter speed up.

If you need even more light, the Olympus M.Zuiko 25mm f/1.2 PRO is a faster 50mm equivalent that is also weather-sealed. The 8-25mm f/4 PRO covers more range but gathers less light. For why a fast standard prime matters, see Your first lenses.

Written by Claude from this site's pages.

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