Search results for 'sensor cleaning' - page 114
Can a lens with a teleconverter really be that good...
I wanted to pick some expert brains on lens options. Specifically I'm in the Market for a long zoom lens (lucky enough to be going on a safari in the near future). I've been looking at the Sigmas which seem to be the only real option. I'm fairly happy that something that goes up to 400mm seems in or...
Posted by WobblyGoblin on 24/01/2010 - 23:16
K18/3.5 experience anyone?
I would atribute those reflections to the UV filter. And I can't see any vignetting??? Still, even with UV filter, FF designed lens was vignetting on APS-C sensor?!?
Posted by axl on 26/01/2010 - 09:21
K18/3.5 experience anyone?
I would atribute those reflections to the UV filter. And I can't see any vignetting??? Still, even with UV filter, FF designed lens was vignetting on APS-C sensor?!? Sorry axl, this pic was taken without the filter attached. I must have deleted the others. Sorry Kris :wink::lol:
Posted by Clarky on 26/01/2010 - 09:48
Filter system for a Pentax DA 16-45mm F4 ED AL
You do know there are two pro series right the Z-pro and the X-pro. I've the Z-pro. I believe you can go up to 10mm on a crop sensor (15mm on 135film) with the X-pro. The Z-pro can go up to 14mm (20mm 135film) but it can be reversed mounted and then it can go a bit further, they don't say how muc...
Posted by Anvh on 28/01/2010 - 00:38
Sucessfull (ish) fungus cleaning
Hi all, After reading several posts about these Takumar lenses I thought I should probably get one to have a play with myself as they seem to be cheap enough on ebay. So after scouring ebay for some cheapies I found an acution for a 135 3.5 and a 55 f2 attached to a Spotmatic SP500. All in a...
Posted by pnjmcc on 28/01/2010 - 02:43
Sucessfull (ish) fungus cleaning
I hope you went after the Ebay seller.
Posted by Mike-P on 28/01/2010 - 06:51
Sucessfull (ish) fungus cleaning
That's a nice little tutorial, it has been bookmarked for future use. Regards Graham
Posted by Technoblurb on 28/01/2010 - 08:34
Sucessfull (ish) fungus cleaning
I've used vinegar on a cotton bud to clean fungus before now, all you need is a mild antiseptic that won't harm coatings. Rescued three 50mm lenses that way! I do have another lens with some worrying specks (hope they're just dust) but I can't persuade the front to unscrew and it's a bit too valu...
Posted by Dangermouse on 28/01/2010 - 08:47
Sucessfull (ish) fungus cleaning
I hope you went after the Ebay seller. Mike, if it had cost more I would've made a fuss but for the price I paid I got a good enough deal. That's a nice little tutorial, it has been bookmarked for future use. Regards Graham Glad it as of some help Graham I do have another lens with some ...
Posted by pnjmcc on 28/01/2010 - 11:05
Sucessfull (ish) fungus cleaning
Problem is, this lens doesn't have a finishing ring around the outside of the glass, just a metal collar about half a millimetre wide that screws into the filter thread to hold the front element in. It does have a couple of notches in but I'm scared to try using a couple of screwdrivers to turn it i...
Posted by Dangermouse on 28/01/2010 - 12:10
Sucessfull (ish) fungus cleaning
NO.!... Don't drill!. :shock: Go to the Pound shop and buy a pack of double sided sticky pads. (you get hundreds for a quid). Cut a couple into strips. about 20mm x 5mm. Stick four or five of those around the name ring and use a rear lens cap of suitable size to stick on the pads. Then just unscr...
Posted by mowog on 28/01/2010 - 12:25
Sucessfull (ish) fungus cleaning
The finishing ring is what I call the bit with the "Pentax-M 50mm" lettering on, it's just screwed into the filter thread. Once you've removed that then the front element group can be unscrewed (conventional thread, unscrews anticlockwise). You will need something to fit into the little notches and ...
Posted by Dangermouse on 28/01/2010 - 14:25
Sucessfull (ish) fungus cleaning
NO.!... Don't drill!. :shock: Go to the Pound shop and buy a pack of double sided sticky pads. (you get hundreds for a quid). Cut a couple into strips. about 20mm x 5mm. Stick four or five of those around the name ring and use a rear lens cap of suitable size to stick on the pads. Then just unscr...
Posted by pnjmcc on 28/01/2010 - 22:55
Sucessfull (ish) fungus cleaning
If the lens is worth more than a few quid I'd send it to Alan Marlow (A.M. Technical Services). He serviced a few lenses for me and did a sterling job. Personally, I am cack handed on a scale of cack-handedness my father (a very practical man) couldn't believe. I'd probably get the lens apart b...
Posted by womble on 28/01/2010 - 23:04
Sucessfull (ish) fungus cleaning
If the lens is worth more than a few quid I'd send it to Alan Marlow (A.M. Technical Services). He serviced a few lenses for me and did a sterling job. Personally, I am cack handed on a scale of cack-handedness my father (a very practical man) couldn't believe. I'd probably get the lens apart b...
Posted by pnjmcc on 29/01/2010 - 08:53
Sucessfull (ish) fungus cleaning
I was thinking more of Dangermouse's A series 200mm which is probably worth a little more than that! Lots of people do happily do this little job, it just isn't for me! Best wishes, K.
Posted by womble on 29/01/2010 - 08:56
Sucessfull (ish) fungus cleaning
Yep, I unscrewed the front thing, but only the very front element fell out. At this point I decided to put it back together and leave well enough alone! Think I got away without much dust getting in. A few quick test shots showed no harm done. The specks don't seem to affect image quality and th...
Posted by Dangermouse on 29/01/2010 - 12:04
Sucessfull (ish) fungus cleaning
Alan charged me 30 quid for a CLA, might be a little more with fungus. You might be better off storing the lens somewhere light and airy and letting some UV get to the fungus. Sealed in cases is not so good unless you are very fussy about changing the silica gel on a regular basis. Best wishes,...
Posted by womble on 29/01/2010 - 13:16
Sucessfull (ish) fungus cleaning
What's the best way to do that - leave it on a windowsill with the lens cap off for a while? I was about to say I'd put a spare UV filter on to protect the front element, but that would rather miss the point! :lol: Edit, just emailed Alan for a quote. Even if it costs me another £50 I'm doing ...
Posted by Dangermouse on 29/01/2010 - 15:36
JAMMED TELEPHOTO LENS
Have you tried cleaning the contacts on the lens mount? Does it work without the teleconverter? Sounds like something has gone wrong with the contacts and the camera thinks you have a pre-A series manual lens fitted. K.
Posted by womble on 29/01/2010 - 06:12
