Originally posted by boriscleto Who do you think he is? @Clinton?
I've got one planned for my future, but haven't made the purchase yet.
I think that any time you're shooting above 500mm, your technique is more critical to the sharpness than the lens. Over 700? The air itself is a problem. Heat or dust will soften your pictures.
Over 1000mm? DOF becomes a substantial problem. Best of luck in nailing the focus.
1200mm? Well, it's really fun.
Here's a Yellowstone brown bear eating the flowers @1200mm on the k3. This is entirely unprocessed.
---------- Post added 09-16-2014 at 09:23 PM ----------
My technique? Tripod quickly set up on mixed ground, one leg shorter than the others on pavement, with the others two in squishy gravel, at a downhill angle, with people stomping about all over the place. It was cloudy as well. Ultimately, this picture exceeded my expectations of what I thought I could pull off in this environment.