You asked
Is the sony fx30 good for wildlife?
The FX30 can work for wildlife, but it's a video body first. It has no viewfinder, so you frame on the screen, which is awkward when a bird takes off. The APS-C crop helps with reach, though: a 200-600mm lens frames like 300-900mm here.
For the FX30, I'd look at these telephotos:
- Sony FE 200-600mm f/5.6-6.3 G OSS, the most natural match for the body.
- Sigma 150-600mm f/5-6.3 DG DN OS Sports, for more reach on a budget.
- Sigma 300-600mm f/4 DG OS Sports, if you can afford the extra light and want the fastest aperture.
Wildlife is the hardest and most gear-dependent kind of photography, so the lens matters more than the body. If you're starting out, buying used is the easiest way to try a long lens without much risk. For more on the subject, see wildlife and sport.
Written by Claude from this site's pages.