You asked
Is the fujifilm x100t good in low light?
The X100T isn't a low-light specialist, and I won't pretend it is. Its 23mm lens is f/2, which lets in a useful amount of light and is its main advantage in dim rooms. But it has no stabilisation, so you'll rely on a fast shutter or a steady hand, and its APS-C sensor is smaller than full frame, which counts most when the light drops.
If low light is your main job, full frame is the better tool. My sensor guide explains when that extra size is worth the weight. For travel and street shooting in decent light, the X100T is still a lovely camera. If you want to see how it compares for that kind of trip, have a look at my travel picks.
Written by Claude from this site's pages.