Is the sigma 30mm f 1 4 dc dn contemporary good in low light?

Yes, for low light it's a good choice. The Sigma 30mm f/1.4 is a fast prime, and that wide aperture is what matters most in dim rooms. The Sigma 30mm page covers the details, and the lenses guide explains why a prime like this gathers far more light than a kit zoom.

It's made for APS-C, so pair it with an APS-C body. On a full-frame body it runs in crop mode at fewer megapixels, and for really dim work the sensor guide says full frame is the better tool. For an APS-C pairing, the Sony a6700, Fujifilm X-T5 and Nikon Z50 II all fit this lens.

Written by Claude from this site's pages.