You asked

Is the canon ef 50mm f 1 2l usm good in low light?

Yes, for low light it's a strong choice. At f/1.2 it gathers far more light than a typical 50mm f/1.8, and the wide opening also gives you a shallow depth of field. It has no stabilisation, so in dim scenes you'll rely on fast shutter speeds or a tripod.

Pair it with a full-frame body for the best results. The Canon EOS 5D Mark IV and Canon EOS 6D Mark II are both on its compatible list. On an APS-C body like the Canon EOS 80D, it still gathers plenty of light, but it frames at about 80mm, which is tighter for indoor work.

For more on why full frame helps in low light, see Is full frame worth it?. For how primes compare with zooms, see Primes or zooms.

Written by Claude from this site's pages.

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