You asked
Is the pentax k 3 good in low light?
The Pentax K-3 is an APS-C DSLR with a 24.4-megapixel sensor and stabilisation built into the body, which helps when you're shooting handheld in dim light. I don't have measured high-ISO results for it, so I can't promise how clean it will look at high settings.
In low light, the lens usually matters more than the body. A wide aperture lets in far more light than a kit zoom. Good options from the K-3's lens list include:
- Sigma 30mm f/1.4 DC HSM Art, a fast standard prime for indoor shots
- Pentax HD DA* 55mm f/1.4 SDM, a fast prime for people and portraits
- Sigma 18-35mm f/1.8 DC HSM Art, if you want a fast zoom
If events and very dim rooms are your main work, full frame is worth considering. For most hobby shooting, a fast lens on the K-3 will get you a long way.
Written by Claude from this site's pages.