|
|
Post by tawnydown on Jan 30, 2013 9:06:20 GMT -5
Hi there. I need to get the lens apart on this camera as the focussing is very tight, probably dried up grease, but I'm having problems getting into it. It's the praxar bayreuth 2.9/prontor svs version. I can get the ring off that has the f numbers and speeds printed on it and the 3 screws presumably holding the front element cover on are already missing. I've tried unscrewing the name plate on the front with a rubber ferrule, do I just need to keep trying with that? The shutter has jammed so once I've looked at the focussing helix I shall be needing to dismantle that too but first things first! Any help appreciated. Thanks
Julian
|
|
Doug T.
Lifetime Member
Pettin' The Gator
Posts: 1,199
|
Post by Doug T. on Jan 30, 2013 12:23:46 GMT -5
Hi Julian, and welcome! I'm no expert, but I had one of these a few years ago. Here are a couple of things you should check before teardown. This wasn't a very complicated camera and took nice photos as I recall. You could try a bit of lighter fluid on the focusing ring as that might help loosen it up. Also a little heat might work ( like a hairdryer ). If it's the dreaded "green goo", it might have to be completely cleaned out. The scrws holding the front element on are teeny little guys and as set screws to far in to be spotted. I know there are others on the forum with a lot more knowledge than I have, but I hope I've helped in some way. I'm located in upstate New York. You'll like this forum, it's a nice place to hang out  Doug |
|
Stephen
Lifetime Member
Still collecting.......
Posts: 2,718
|
Post by Stephen on Jan 30, 2013 12:32:58 GMT -5
I was just about to post about the screws, the chances that three are missing is very low, so they are there, deep in the holes, and need an instrument screwdriver to remove them, make sure it is sharp, not a worn end. if when the screwdriver is used, you can feel play in the slot, it may pay to file the end flat a bit to make it a tighter fit, it helps prevent breaking the set screw heads.
Once out the whole shutter can be washed in lighter fluid to clean, and then very careful lube job.
Stephen.
|
|
|
|
Post by tawnydown on Jan 30, 2013 13:24:11 GMT -5
Many thanks for those replies, I shall have another look at them! I've had it about a year and am finally getting around to looking at it. There's something quite nice about its chunkiness. So I'm guessing I have to remove the optical elements before doing the lighter fluid? Thanks julian
|
|
mickeyobe
Lifetime Member
Resident President
Posts: 7,280
|
Post by mickeyobe on Jan 31, 2013 3:36:26 GMT -5
Many thanks for those replies, I shall have another look at them! I've had it about a year and am finally getting around to looking at it. There's something quite nice about its chunkiness. So I'm guessing I have to remove the optical elements before doing the lighter fluid? Thanks julian Julian, It ain't necessarily so. If you use the lighter fluid sparingly and judiciously It might not go onto the lens. If it does it will evaporate quickly. Then with camera set on B or T with aperture wide open, a gentle cleaning by fogging the lens with a puff of your breath and a dry Q Tip should leave the lens clean. NOTE: If you use Bulb make sure not to release it when the Q Tip is in the camera. Mickey |
|
