Originally posted by luftfluss When I got home this afternoon, I saw this little hawk dart from a snow-laden tree to the power line. Tamron 400/4 65B + A 1.4x-L
Nice! I found the 400 Tamy + 1.4XL converter a satisfactory combo. I also used a 2XL on the 400 Tamy to get 800mm f8, So long as you don't crop the results are OK, but not outstanding. Captured a few Goldfinch images in the Film Era with that combo, and there is decent feather detail. The 400mm f4 Tamron was/is one of the best big teles for K-mount short of the massive, rare, very expensive Pentax 400mm f2.8.