Search results for 'uv filter' - page 100
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
I currently have a set of Cokin Pro series graduated filter used quite a lot on my 18-55 kit lens. However late last year I purchased a Pentax 16-45mm and wondered, before I bother purchasing a 67mm attachment ring, has anybody used the Cokin pro range with this lens and have they had many problems ...
Posted by Technoblurb on 26/01/2010 - 20:49
Filter system for a Pentax DA 16-45mm F4 ED AL
I use the standrad cokin P system with no problems at the wide end - hope that helps - the adaptor can be had from "crooked imaging" on ebay for around a fiver
Posted by selectcase on 28/01/2010 - 00:09
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
Filter system for a Pentax DA 16-45mm F4 ED AL
which size filters they take? 100mm? to the OP: how many slots? You could always try it and see.... Bret
Posted by bretti_kivi on 28/01/2010 - 07:09
Filter system for a Pentax DA 16-45mm F4 ED AL
I clearly got my wires crossed on this one, the filters are P series with 84mm filters, my lack of product knowledge showing me up.:oops: Graham
Posted by Technoblurb on 28/01/2010 - 08:13
Filter system for a Pentax DA 16-45mm F4 ED AL
I use P size filters with the DA12-24 and they're fine down to 15mm with only a tiny amount of vignetting between 12-14mm (I use the wide angle holder which only has the single slot). I don't have a DA16-45 to try but I see no reason why they shouldn't be OK...
Posted by hefty1 on 28/01/2010 - 10:48
Very Vivitar.
I got one!... At long last, I bleedin' well got one! :D Ebay, Forty sumthin' quid, with matching clamp on hood and Hoya 72mm filter. I've wanted one of these for so long. Outbid on many, but at last, I have my Viv 35-85 f2.8 Varifocal, in M42 mount.
Posted by mowog on 26/08/2010 - 19:37
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
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
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
Real max aperture of Pentax 135mm f2.5?
This was stated about this lens on another forum (paraphrasing): The aperture indication is wrong. Just measuring the front lens diameter makes clear it cannot be 2.5. Does anyone here agree with that, assuming it's for the SMC K version with a filter size of 58mm?
Posted by iceblinker on 29/01/2010 - 15:19
Real max aperture of Pentax 135mm f2.5?
135/2.5 = 54mm So assuming there has to be a certain amount of space around that for the blades to fold back into then I'd imagine the barrel would have to be around 65mm minimum at the aperture point. I wouldn't say that a 58mm front element ruled out a f/2.5 aperture - on this particular lens t...
Posted by Daniel Bridge on 29/01/2010 - 16:21
Real max aperture of Pentax 135mm f2.5?
We were thinking of the original K series 2.5 which has an SMC coating and a front element of 58mm. The Takumar version has a filter size of 52mm which makes it seem impossible to be a f/2.5. The K/2.5 version is a 6 6 design weighing 500g, 58mm. The K/3,5 version is a 4 4 design weighing 365g,...
Posted by womble on 29/01/2010 - 16:24
Real max aperture of Pentax 135mm f2.5?
Fascinating looking beastie, Gartmore. Excuse my ignorance but what is the middle scale for? K. The middle scale just mates up with standard focus pulling kit and is part of the focus ring. CZ Distagons are the best lenses I have ever used (sorry, even better than SMC Takumars). If you really...
Posted by gartmore on 30/01/2010 - 15:14
Real max aperture of Pentax 135mm f2.5?
This was stated about this lens on another forum (paraphrasing): The aperture indication is wrong. Just measuring the front lens diameter makes clear it cannot be 2.5. Does anyone here agree with that, assuming it's for the SMC K version with a filter size of 58mm? I think the OP may be referring...
Posted by womble on 01/02/2010 - 10:36
smoother bokeh
Stefan, Unfortunately, by sharing your idea with the world, you will no longer be able to patent it in most countries outside the US! Aww too bad but Don already had it earlier. @Don, yeah that sounds good I was thinking of using some vaseline just on the edges of the filter to get a soft effe...
Posted by Anvh on 29/01/2010 - 17:24
smoother bokeh
Why am I now getting a terrible urge to combine the "Batman" logo with an old scruffy UV filter I have here? I could just print it onto some paper, then cut it out and put it in place of the glass... Bokehman! :lol:
Posted by Dangermouse on 29/01/2010 - 22:24
A very rare takumar on ebay
What are those extra filter things with 862 mu and 365mu on them?
Posted by thoughton on 30/01/2010 - 00:06
