stiff lens

womble
Posted 04/11/2009 - 18:20 Link
I was planning to use my SMC-A 50mm f1.4 today. I found, however, that the focusing has gone extremely stiff. The aperture ring is fine, and blades shut down etc. OK but the focus is almost jammed. Any idea what may have caused it and if it is fixable?

Not having much luck with lenses at the moment

Thanks, Kris.
Kris Lockyear
It is an illusion that photos are made with the camera… they are made with the eye, heart and head. Henri Cartier-Bresson
Lots of film bodies, a couple of digital ones, too many lenses (mainly older glass) and a Horseman LE 5x4.
Peter Elgar
Posted 04/11/2009 - 18:55 Link
You're not the only one ! My 200mm f4 SMC Takumar is also so stiff I need two hands to wrench the focus ring round -- it's been like that for years. In the summer sometimes I leave it out in the hot sun -if there IS any to loosen the lubricant.
Been a member of Pentax Club since the Ron Spillman era! Got COMPUTERISED at last - DIGITISED?
Taken the PLUNGE - BUT FILM STILL RULES !!!
Posted 04/11/2009 - 21:11 Link
sounds like the grease is solidifying.

Best to take it to a classic camera shop, and get them to service the lens. It will cost but will be worth it. It will be like a new lens.
Some Cameras
womble
Posted 04/11/2009 - 22:06 Link
Sounds like a job for Robin at Harrow Technical....
Kris Lockyear
It is an illusion that photos are made with the camera… they are made with the eye, heart and head. Henri Cartier-Bresson
Lots of film bodies, a couple of digital ones, too many lenses (mainly older glass) and a Horseman LE 5x4.
stevejcoe
Posted 04/11/2009 - 22:18 Link
womble wrote:
Sounds like a job for Robin at Harrow Technical....
Kris, this is a relatively easy strip down and reassemble job. The same thing happened to my SMC-A 50mm f1.4. No specialist lens tools required just a couple of good quality watchmakers screwdrivers.

If you feel inclined to give it a go, send me a pm and I will have a go at writing a disassemby/reassembly guide

Regards - Steve
Edited by stevejcoe: 04/11/2009 - 22:18
hefty1
Posted 04/11/2009 - 23:41 Link
Before you try anything else...

Hold it under a hairdryer for a couple of minutes and let it get hot to the touch, then just turn the focus ring back and forward a few times to loosen it up - that will often do the trick and requires *no* skills whatsoever (other than the ability not to drop a hot lump of metal and glass - I use an oven glove to get round that bit).
Joining the Q

Add Comment

To leave a comment - Log in to Pentax User or create a new account.



Proudly supporting Pentax User

Samsung Logo Asahi Pentax Logo