Both of my raptor pics that you gave likes for, were done with a Tamron SP AF 70-200mm f/2.8 Di LD Macro.
The dragon fly in flight was also done with it. You know , I'm new with all this , but, the lens itself is excellent.
It does a 1:3 macro too. It's perfect when 1:1 is too much.
I was going to get the
HD PENTAX-D FA★ 70-200mm F2.8ED DC AW - $1600.00
I have the
smc PENTAX-DA★ 16-50mm F2.8 ED - $1050.00. This is a very good high quality lens.
BUT. The Tamron in a side by side comparison renders images just as good or better in some instances.
I paid about 700.00 for my Tammy. It's noisy compared to the DA* 16-50mm, on auto focus.
This auto focus noise before the shutter flip ( which I just thought about thanks to this thread) is real quiet on a Pentax, is what made the last Hawk look at me.
I only got one shot. But you saw it. It came from the Tamron. If not for the noisy auto focus that hawk would not have looked right at me. I was close. Real close.
So close to that bird that I shot him at 82mm focal length. Not 200mm. But only 1 shot.......and poof. He was gone. You can tell in the photo that he was alarmed and in the process of taking flight.
For image rendering, and sharpness, it is deadly. I think you may end up liking that Tamron.
Have a good day, Mam.