Having a great time with the 200-500mm f/5.6 with birds in Florida (DX body, tripod or monopod).
In the past, I've used one of the 300 f/4 lenses. My concern had been whether the zoom would give me the image quality I had been used to. Here are some comments on my experience with the 200-500:
- The image quality at 300mm is fine, matches my expectations based on the 300 f/4 prime. (Maybe the 300 f/4 PF would be better?) I'm shooting mostly wide open, f/5.6. Image quality is quite consistent across the zoom range. Shooting a lot at 500 and f/5.6.
- The extra reach is much appreciated for bird shooting. So is the flexibility to zoom out to 200mm.
- Shooting at 500mm, tripod and gimbal head is much better. I used a monopod with the 300mm.
- AF is fine for perched and wading birds. Did not need AF Fine Tune.
- Handheld is OK, though a bit heavy. Handheld birds in flight are tough; haven't had much success.
- What to do when I want even longer reach? In the past, I just accepted the loose shot and cropped later. This time, I added a TC14E iii. First results were poor. Combination had significant mis-focus (in front of the desired target). When I added AF Fine Tune for the combination, results at 1.4x500mm with the TC are better than the lens alone 500mm and crop the image. I settled on +8 for the lens+TC combination. Not sure how much I'll use the TC, but good to know I can get reasonable results. (Zooming with feet would, I'm sure, give better image quality, but sometimes you can't.)
Ding Darling, Great Egret, 200-500 @ 200mm f/5.6, this is the full frame, some adjustments.