Is the fujifilm x t30 ii good for wildlife?

Yes, with the right lens. The X-T30 II is an APS-C body, so a telephoto lens gets extra reach. It has no in-body stabilisation, so pick a lens with stabilisation for slow shutter speeds. The four I'd look at first are:

• Fujifilm XF 100-400mm f/4.5-5.6 R LM OIS WR: about 150-600mm on full frame, and weather-sealed.
• Fujifilm XF 150-600mm f/5.6-8 R LM OIS WR: the longest reach here, about 225-900mm on full frame.
• Sigma 100-400mm f/5-6.3 DG DN OS Contemporary: a similar range to the Fujifilm 100-400mm.
• Tamron 150-500mm f/5-6.7 Di III VC VXD: a good middle option for distant subjects.

Wildlife is hard on gear and on you, so read wildlife and sport first. If the big lenses feel like a lot of money, buying used is a cheap way to try one.

Written by Claude from this site's pages.