A Minor Catastrophe

cbrog
Posted 25/01/2014 - 18:58 Link
Mounted my Vivitar 28-200 on my old K10 as I have many times previously.
This time it clicked into place about 10 degrees short of the vertical which means that the electrical contacts are not aligned. Worse still the lens will not now dismount and will only move very slightly in either direction.

I have a horrible suspicion that it is not now possible to remove the lens and I may well have to bin both

Shame really - the lens is in superb condition and the K10 shutter count less than 6k.

I am wondering if it is possible to partly dismantle the lens in place and if anyone else has had this happen to them

Roger.
Edited by cbrog: 25/01/2014 - 19:06
cbrog
Posted 25/01/2014 - 20:06 Link
Panic over!! The problem seems to be connected to the aperture ring, if the lens is mounted with the ring set to A then the lens jams in the mount. Considerable force was needed to move the aperture ring off of the A setting in place but, once done, the lens moved quite freely.

Strange that - the lens is clearly marked as compatible with P/K-A & R-P/K.
And there are NO Ricoh type pins on this lens!

Roger.
Jonathan-Mac
Posted 25/01/2014 - 22:43 Link
Does the lens have a Ricoh pin? It's a small pin that protrudes where the AF connects on modern lenses.
Pentax hybrid user - Digital K3, film 645 and 35mm SLR and Pentax (&other) lenses adapted to Fuji X and Panasonic L digital
Fan of DA limited and old manual lenses
dpm
Posted 26/01/2014 - 08:07 Link
Some "A" positions don't have an internal switch, rather one of the lens contacts pops in and out. Sounds like this might be sticking?
sterretje
Posted 26/01/2014 - 15:42 Link
Jonathan-Mac wrote:
Does the lens have a Ricoh pin? It's a small pin that protrudes where the AF connects on modern lenses.
Did you read the opening post
Pentax K10D + Vivitar 55/2.8 macro + Super Takumar 55/1.8 + SuperMultiCoated Takumar 85/1.8 + SuperMultiCoated Takumar 135/3.5 + SuperMultiCoated Takumar 200/4 + Super Takumar 300/4
Pentax K100D + DA18-55ALII + DA55-300
Pentax K5 + FA31Ltd + M50/1.7 + DFA100WR + M120/2.8 (+ DA18-55WR at occasion)
gartmore
Posted 27/01/2014 - 10:05 Link
this reminds me of my very first post on this forum. A 500mm Tamron stuck on a brand new *istDS. Brute force did the trick!
Ken
“We must avoid however, snapping away, shooting quickly and without thought, overloading ourselves with unnecessary images that clutter our memory and diminish the clarity of the whole.” - Henri Cartier-Bresson -

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