Search results for 'back focus' - page 1978
stuck M42 lens
I'll see what I can do about rigging mirrors up to mirrors but I don't know if I'll be able to send a photo. I'm not sure there's much to see anyhow, it all looks normal except the auto/manual ring is, I think, neeearly all the way at auto (but maybe stuck not quite there, I can see part of the "m" ...
Posted by davidxgreen on 08/10/2005 - 16:15
Faulty images on istDS???
I had a similar problem a couple of weeks ago on about 7 or 8 consecutive frames. In my case, the horizontal band is across the top of every picture. I noticed that the band contains part of the previous image. I talked to Pentax, who was helpful, but they didn't have any ideas. They suggested takin...
Posted by Anonymous on 25/11/2005 - 21:01
mirror sticking on MZ-7
hi my girlfriends MZ-7 started misbehaving last weekend. it'll be fine for a few frames, then the mirror will remain up after the shutter has closed. the film doesn't advance... the whole things just jams up. the mirror can be pushed down again by hand, but just flips back up. once the mirror is ...
Posted by fenderblast on 09/10/2005 - 19:51
mirror sticking on MZ-7
Was the camera cooler/colder than usual? I've had the Spotmatic family's lubrication thicken/gum up in cooler weather, and have sent the bodies to be serviced. I don't know the age of your lady's MZ, but would this be a possibility? Cheers I don't think this will be the problem in the MZ's. Any...
Posted by Kim C on 11/10/2005 - 16:11
Fungus - latest thoughts?
Hi Kimbo, Just a few thoughts on fungus based on personal experience/research and discussing the matter with both Mike Spencer and Robin from Harrow Technical. In all I have had about 8 lenses suffering from Fungus. 6 cleaned fairly easily, one was difficult and the last was damaged well beyond rep...
Posted by Kim C on 12/10/2005 - 16:04
Fungus - latest thoughts?
Thanks Kim, the fungus only really affects one internal element and is clearly visible when looking through from front to back. When I get a chance, I'll have a go at posting an image for you - that'll be an interesting project in itself! The lens is a one touch zoom with 13-elements in 10-groups...
Posted by Kimbo on 12/10/2005 - 16:28
Fungus - latest thoughts?
I wouldn't call that quite bad, compared to some I've seen, and I am sure it would have little effect on image quality. Any etching of the glass that might have occurred would be very minor. However, it could get worse, and the lens now is of little value. I'd pull it apart ASAP. You may never...
Posted by George Lazarette on 16/10/2005 - 22:27
Fungus - latest thoughts?
Hi Kimbo, That looks to be the intermediate form of fungus I was talking about. It may prove difficult to clean but I doubt it will leave much etching. Depending exactly where it is, you may get away with just removing the front group and reaching it with a cotton bud or similiar. If it is on the b...
Posted by Kim C on 16/10/2005 - 22:54
Fungus - latest thoughts?
I'm quite relieved that you don't think it is too bad, I've only seen a couple myself and this is the worst one. The element in question appears to be toward the center but with any luck it'll be at the back of the front group or the front of the rear one but either way I suspect a considerable amou...
Posted by Kimbo on 16/10/2005 - 23:10
Problem to view some Optio 750Z pics on PC
Be sure to format your card in the camera NOT the PC. You can also run into trouble with some cameras if you copy files from the card to the PC and then back to the card, particularly if they have been edited in some way on the PC.
Posted by Mannesty on 23/10/2005 - 09:24
s40-optical lens dont retract bak in afta switchin of camera
I NEED HELPPPPPPP Woz takin pics n my bro tuk da camera to take sum photos n he was passin da camera back 2 me n he dropped IT.... :evil: it was a very tiny drop coz wasnt from very high as he woz sittin on da chair... n it fell on2 carpet... So seemed like a soft fall and i thought da camer...
Posted by Anonymous on 06/11/2005 - 22:25
s40-optical lens dont retract bak in afta switchin of camera
Optio cameras don't like being dropped (at all)... in fact most cameras don't :( It requires fixing, and may be similar to an experience we had with an S40 that got dropped. Read this link: https://www.pentaxuser.com/forum/viewtopic.php?t=1577&highlight=optio+s40+focus This is not a "user...
Posted by MattMatic on 07/11/2005 - 09:46
Pentax S40 Does Not Remember Settings
Hi all I've been using my S40 with Ni-MH batteries for almost 2 years. For the past half a year or so, I notice that the system time always goes backwards for half a day and some settings such as exposure does not get saved each time I turn on and off the camera. Other settings like background...
Posted by lokety on 07/11/2005 - 07:58
Battery Cover Replacement
KMark, There are two sizes - SP & SPII are one, SPF the other. I got one from a chap in New Mexico on eBay a few months back, but it was generic - chromed. Worth a try... Good luck
Posted by Anonymous on 22/11/2005 - 22:01
*istDS horizontal banding in pix
Hi -- Wondering if anyone knows of a possible cause of this problem. A few weeks ago, in the middle of shooting a dance competition, a series of 7 or 8 pictures had this horizontal band. The problem went away and hasn't returned in the 800 pics I've taken since. The first pic was all messed up and...
Posted by foto guy on 25/11/2005 - 21:52
Disassembling FA28-70 f4
Hi all, I have an SMC-FA 28-70 f4 which has some contamination on one of the rear elements. It doesn't look like fungus (ie not streaky), but more a misty kind of thing. I have sourced a replacement which is fine, and since this one is almost certainly beyond economical repair I was going to hav...
Posted by MattMatic on 06/12/2005 - 09:05
Disassembling FA28-70 f4
Hi Matt, I will have a look at mine tonight and try to post something. In the meantime, can you give a clue as to where the problem is? Is it definately on the rear group and if so on the back of it or between the elements? Kim
Posted by Kim C on 06/12/2005 - 09:31
Disassembling FA28-70 f4
Actually, it's three screws to remove the rear black cover. The fourth (nearest the aperture finger) holds a stop in place. Don't remove this! (It's a real pain to put back!) Having removed the cover, I can't for the life of me see what comes next!! Matt
Posted by MattMatic on 06/12/2005 - 11:59
Disassembling FA28-70 f4
Hi Matt, I am loath to take apart a fully servicable lens when I don't have to so this is my best guess rather than a proven fact. :wink: I was going to say leave the four screws around the face of the silver rim in place. These allow you to remove the ring which in K mount lenses give you acc...
Posted by Kim C on 06/12/2005 - 18:41
Disassembling FA28-70 f4
It seems most likely that this is the element separation problem for which these lenses are infamous. As far as I know, there is nothing to be done. It is unlikely that you will be able to clean off the old adhesive fully and then glue the elements back in perfect alignment. (If you do manage ...
Posted by George Lazarette on 07/12/2005 - 10:26
