Finally, the sun popped thru this morning, so I went out to take some photos of The TV Tower on Mount Spokane 7.5 miles away. I had previously taken some with my MK I lens and Canon TC MK II's.
This time, I just snapped them hand held, using phase detect AF with no AFMA. That's a bit unfair, since the first version was done with live view and manual focus at 10X. I may update them when I have more time.
Here are my older shots with the MK I lens: I had a 1D MK III for this, so the image is smaller.
Crop of MK I with 1.4X
Here is the MK II lens 560mm equiv, 1/1000 sec, f/10 effective aperture, ISO 400 on my 5D Mark III. Its a different camera, but it did well. 7.5 miles is a lot of air to distort the image. Years later, the trees have grown a lot, so I had to move to a different angle to take the shot.
Cropped and sharpness tweaked: