Originally posted by normhead But, WR, focus limiters, and questionable difference in IQ at the long end make this an interesting subject for me.
Tamron 150-600mm G2 has a quite decent WR and it has also focus limiters. Opticaly is more than decent and the af is at the level of Canon 100-400mm (the first version) which is not bad at all.
Originally posted by normhead I still wonder whether a D750 would produce better IQ than a K-1 and 150-450. The 150-600 has 33% more reach. The K-1 has 50% more pixels, I have no clue who wins that saw off.
Depends on what you are shooting. If you're shooting BIF, the winner will be the one who:
- will keep the bird in the frame long enough to shoot a burst of 8-12 shots
- will have a more fast and accurate af
- will have the better technique
- will have better fps
On the other hand, shooting a stationary bird with the gear you mentioned, I think in terms of image quality it will be hard to find a winner.
To the OP, if you are into landscape photography, K1 is hard to beat given all the featured that it has, features that are in my opinion optimised for this area of photography.