Really digging deep ... to get to 400mm
Okay, I went and committed the "ultimate sin" and mounted the CZ 135mm f/1.8 on the Kenko 3x T/C. to produce a 405mm f/5 lens. You know what? It ain't half bad! I just did a couple of preliminaries with it, and I am hopeful and rather impressed with the acceptable sharpness and limited Chromatic Aberration of an indicated aperture of "f/6.3"
I had not really thought about doing something like this until 'Rooz' and Peter started going back and forth about the "heinous" act of mounting the Minolta AF 200mm f/2.8's APO G HS on a T/C. Oh, believe me that the Zeiss lens' focus speed is nothing to write home about (it is slow as heck), riding on a T/C, but for a quick fix ... it is definitely worth a look.
I will post some side-by-sides, later ... comparing the:
- TAMRON SP AF 200-500mm f/5-6.3 Di LD @ 400mm,
- Tokina AT-X 840 80-400mm f/4.5-5.6 @ 400mm,
- 3x T/C w/ SONY CZ 135mm f/1.8,
- 2x T/C w/ Minolta AF 200mm f/2.8 APO G HS
all mounted on the α850
It would seem to be a "fair fight" ... and just what the doctor ordered. :cool:
Puppy update ... in reflection
I last reported in this thread that my dog had some serious issues with his gait ... and feared for a torn ACL tendon. Went back to the Vet, today, because my pup was getting worse, losing weight, no wanting to eat and nearly unable to walk at all. I mean ... it freaks you out. It couldn't be due to an injury like that.
It is worse ... it's cancer. Appears to be a huge tumor hidden inside his left hip and literally closing off his alimentary canal. We have some rapid and serious diagnostic work to do to investigate this further, but at his advanced age (10 yrs) ... the options are narrowing pretty darn quick. :(
A850 w/ Minolta 200mm f/2.8 APO G HS
@ f/2.8 - 1/8 sec - ISO-200 - Manual - Handheld - Light Source: Fluorescent Table Lamp - Reflection in closet door mirror