Indoor gathering, low light

The dominant constraint indoors is light — there isn’t much. The Tamron’s constant f/2.8 buys you two full stops over a typical kit zoom, which is often the difference between a sharp frame and a blurred one. Shoot aperture priority wide open, set the Auto ISO minimum shutter to 1/125 so moving people stay crisp, and let ISO climb to 3200–6400 without worry — this sensor handles it, and a slightly noisy sharp photo beats a clean smear. Wide focus area with human recognition keeps eyes sharp as people move and you recompose.

Watch out for mixed and flickering light. Rooms lit by LEDs and fluorescents can produce banding, especially with the electronic shutter, so keep the mechanical shutter for stills and enable the camera’s anti-flicker option if you see stripes. And white balance will wander under these sources — shoot RAW so you can set it right for the whole set afterward.