First, my disclaimer.
The tech side of photography is not my forte.
This lens is not the DI version.
Fotodiox adapter, black felt inside.
All shots at f/6.7, tripod mounted, using the 2 sec. timer.
jpeg from camera, no post work.
@70mm, 320 ISO (ignore the black lantern to the left)
the tree is about 100' away.
@135mm, 320 ISO
@200mm, 320 ISO
crop of above.
@135mm, 320 ISO.
@200mm, 320 ISO. (note: small branches between camera and subject in above and below photos)
looking for PF
random shot, hand held, 640 ISO
PF does show up with very bright back-lighting, but I didn't see much otherwise.
I was very pleased with the results, and plan to test this lens more at 135mm, against my M135/3.5.
The little M is a favorite so far.
Some Tamron lenses seem to have not tested well, but I also like the results from my
Promaster (Tamron) 28-105mm f/4-5.6.