I brought in my Pentax F-1.7x AF TC to work with the Photosniper. I also attempted to use my cheapo Dynatran AT CF992 from Amvona . My tripod came with a tripod head that is supposed to hold the weight of the combo but it seems to move quite a bit due to the heavy weight.
First my set up, I use my camera bag to stabilize my tripod
Foil to get F-1.7x to work with M42
Focus trap also kicks in
I changed the T-mount to cover the contacts
and K locking pin
I can only use wide open
due to focusing (explain later in detail)
Red knob cocking the lens wider than f/4.5
Toilet Plunger lens hood
The magical AF mechanics from Pentax F-1.7x AF TC works quite well in the set. Unfortunately, I can't stop down to f/8.0 or smaller as the AF from the TC will kick in again after stop down and I can't release shutter due to inability to obtain focus after stopping down
I will need to re-set AF button to cancel AF and use combination of AF and shutter release button to release shutter without AF after stopping down.
First two test shots are done on tripod with SR off and cropped in the middle, the bird is quite far away, I don't think my tripod head is very stable for the shot. Also the wide open shot and TC can degrade on detail as expected. All shots wide open.
And next three are done hand-held, I manage to get closer to the bird without the tripod. All shots are cropped middle with some sharpening in iPhoto.