You asked
Is the fujifilm x a3 good for wildlife?
Yes, with the right lens. The Fujifilm X-A3 is a fine small APS-C body, but it has no stabilisation in the body, so the reach and the stabilisation have to come from the lens. Wildlife and sport are the hardest things to photograph, and the crop factor helps: a 70-300mm lens frames like 105-450mm on full frame.
For a sensible start, I'd pick these from the X-A3 list:
- Fujifilm XF 70-300mm f/4-5.6 R LM OIS WR for birds and nearby animals, with optical stabilisation and weather sealing.
- Sigma 100-400mm f/5-6.3 DG DN OS Contemporary if you want more reach for less.
- Fujifilm XF 150-600mm f/5.6-8 R LM OIS WR for distant subjects, if you can carry it.
Long lenses are expensive new, so buying used is the easiest way in.
Written by Claude from this site's pages.