Search results for 'uv filter' - page 254
Fungus
well the question is rather moot now as the seller finally responded and is going to credit me as soon as he gets the lens back. including all shipping charges. he's in the UK also.. this lens did have 2 small holes drilled in it at the filter ring. evidently someone else wanted in also. anyway, i...
Posted by dfw on 29/05/2006 - 22:50
Pentax ring flash,100 macro lens and K10
Neil, Welcome to the forum. You don't mention which of the two Pentax ring flashes you propose to use. In my opinion (I've used both) the AF140C is a far better ring flash solution than the AF080C. To answer your question, any Pentax flash can be used with any Pentax camera in manual flash ...
Posted by Mannesty on 07/01/2007 - 12:35
Polarisers
Not really a problem... I've been under the impression that linear polarising filters fool AF into not working. I have a polarising filter that I've always believed is a linear one; it says, on the side: "Hoya 72mm PL Japan". I've had it for many years, and it's done its job very...
Posted by ChrisA on 30/03/2007 - 22:26
Polarisers
A circular polariser can be rotated. When attached to your lens, can you rotate it? Duh, of course. What, do you want me to post a couple of pics taken through it, to prove that I know what a polarising filter does? :D Look, I know that many of you guys know far more than I do about this stuf...
Posted by ChrisA on 30/03/2007 - 23:50
Polarisers
Thanks for noting this. And thanks to Galoot for posting the link (at which is also www.dpfwiw.com/polarizer.htm#circular, which has the LP test on it that RF mentions). Very pleased to report that my K10D passes this test. So I'll stick with my linear polarisers :) No simple little test is goin...
Posted by stewart_photo on 03/09/2007 - 01:22
Polarisers
Thanks for noting this. And thanks to Galoot for posting the link (at which is also www.dpfwiw.com/polarizer.htm#circular, which has the LP test on it that RF mentions). Very pleased to report that my K10D passes this test. So I'll stick with my linear polarisers :) No simple little test is goin...
Posted by George Lazarette on 03/09/2007 - 11:12
Circular aberrations in night photos
Thanks for the replys. No, I forgot to mention that the images were taken with existing light and no filter was over the lense on any of the cameras. Several of the aberrations / maybe air pollutants, resemble the dust particles reflecting on camera flash. No flash was used with any of the im...
Posted by alchemist on 02/07/2007 - 17:38
RE: Marks on Prints
Looking at those first two shots, it's interesting that the orange shape is largely horizontal, even though the camera has been moved through 90 degrees. This, I think, would rule out a light leak in the camera, otherwise the shape would be on the same place on the negative, which would mean it wou...
Posted by Daniel Bridge on 08/11/2007 - 15:47
51mm Filters
I have a very nice Cosinon 135mm manual focus lens which is I use for macro when used with extension tubes. It has 51mm thread size and I cannot get a protective filter anywhere in this size. I have also looked for a step up ring but no luck there either! Does anyone know if this odd size is still ...
Posted by MX veteran on 06/12/2007 - 00:35
51mm Filters
Are you absolutely sure it is 51mm? This tends to be a push-on size for lens caps. It is almost unheard of for a manual focus 135mm lens to be anything other than a 49mm or 52mm fuilter thread. 51mm is sometimes the outside diameter and the inside filter thread would be 49mm.
Posted by johnriley on 06/12/2007 - 07:59
51mm Filters
Cheap soft focus filter. :lol: :lol: My only other thought is that it might be a Series thread, probably Series VII. Kim 49mm is too small and 52mm too big! I could try clingfilm????????
Posted by Kim C on 06/12/2007 - 12:45
K10D Spot on some images. Help Please.
Does anyone know if a scratched sensor is repairable, is the coating over the sensor replacable :?: It is most unlikely that the actual sensor was damaged. It's much more likely that if there was in fact any damage, it was to the glass filter in front of the sensor that, amongst other functions, pro...
Posted by Mannesty on 31/10/2008 - 12:50
Horrible wavy line patterns
Do you have a filter on the lens? If so, take it off and repeat the experiment.
Posted by Mannesty on 10/03/2008 - 00:59
Not focusing to infinity
I've just bought a used Pentax FA 28mm F2.8 lens. Judging by my split-image screen when attempting to focus manually on far-off subject, this lens can't focus to infinity. I don't mean it goes beyond infinity, I mean it doesn't even go as far as infinity: actually not far enough to focus on some...
Posted by iceblinker on 12/03/2008 - 09:53
noise at iso100
Well I have a jolly fine monitor :P There are a couple of additional points here: * The sample images are PNG format - they must have been converted from some other format. So it's difficult to tell what's happened. * There is some posterization - looks like JPG artifacts to me. So I'd guess th...
Posted by MattMatic on 31/07/2008 - 09:33
Fixing a busted lens
I have recently acquired a Pentax-M 1.7 50mm. It was a freebie and seems OK, apart from the front filter ring, which is loose and flapping about. I'd like to have a go at fixing it to use for flash portraiture on my K200D. Anyone know how to get these to bits (in a way that I can get it back t...
Posted by Sdeve on 14/08/2008 - 19:46
Fixing a busted lens
If I remember correctly, you need a rubber bezel removing tool to twist the bezel off (the round plate that shows the lens data and sits between the glass and the filter thread). The filter threaded shroud I believe is held in place by a few screws. Tighten the screws and refit the bezel. I think...
Posted by Mannesty on 14/08/2008 - 21:14
Dust
It is very easy and there are a few options about. I dont know what the precise Samsung menu option is but choose 'sensor clean'. Make sure your batteries are fully charged. The mirror goes up and the shutter opens. What you are cleaning is not the sensor itself but a glass filter in front of it. My...
Posted by gartmore on 21/11/2008 - 13:15
Strange blue halo/spot with Tamron 90mm 2,5
Thanks Alan, I can't remember if I tested the lens with or without the UV filter that came with it. I know I never used it with it previously (it seemed to me to put a slight color cast that I didn't like), so that might explain why I never noticed the spot, if that was indeed the reason. M...
Posted by nicolas1970i on 05/12/2008 - 16:08
Strange blue halo/spot with Tamron 90mm 2,5
Just an update, I've tried again with and without the UV filter... no difference, blue spot visible from f/7 :(
Posted by nicolas1970i on 12/12/2008 - 14:17
