Vivitar 28mm f/3.5 on PK mount that has a large flange that get in the way for my lens to be usable on my K100D body
Last night I performed the 1st part of the operation and without any saws, any file, any tool other than a simple small screwdriver to dismount the cap by unscrewing the three screws:
Vivitar 28mm f/2.5 in PK mount with a Flange not suitable for K10/100D bodies. I paid $20 shipped for this Vivitar beauty, serial # 22761834 (by either Kiron or Kinon according to
Vivitar Lens Manufactuers )
#1
after 3 screws, the cap with the big flange is out
#2
Without the cap/flange
#3
The vivitar is a beauty to look at and it has a 67mm filter thread and the focusing ring is top notch
And the lens works without the cap/flange, and test shots on my Pentagon 50mm f/1.8 in M42 mount converted to K mount lens with the bower adapter. I unscrew the clipping mechanism and make the adapter permanntely mounted on the my Pentacon M42 lens. And I can unscrew the adapter with the rear end cap to convert the lens back from K to
M42 mount
And the test shots from my beautiful Vivitar 28mm f/2.5 shooting my Pentacon 50mm f/1.8 converted to K mount. That Vivitar is way sharp and I crop this to almost 60-70% crop and it is still very sharp in 100% crop
#4
#5
And even without putting back the cap/flange back to my Vivitar, the lens works on my K100D without the flange getting in the way on the K mount socket.
A happy man with a $20 beauty with a 28mm f/2.5 charmer. More of my gear:
Inexpensive gear with Pentax - Hin's Tech Corner
Hin