I currently have the 300/4.5 ED AI and 400/5.6 ED AI that I use for my long-distance landscape work - they are great, except that sometimes they are a little slow and being able to quickly change to a different focal length can be a problem.
So to get more speed and potentially be able to have some zoom capability I'm looking at the 200-400/4 ED and the 400/3.5 ED-IF.
This would be for long-distance landscape work with my D800 or A7RII - I'm usually working around sun-rise/sunset so wide open performance is important to me.
How is the 200-400/4 ED AI for such work wide open at 200, 300, and 400mm on these high MP bodies? Would the 400/3.5 be a better option if I want better wide open performance. I can live with CA, but really want a pretty sharp image across the frame for stitching and cropping purposes.
I can get a 200-400/4 in great shape for $2800 while a nice condition 400/3.5 ED-IF is going for ~$1,000.
Thanks for any thoughts on this!
- John