Search results for 'back focus' - page 686
16-50 - a problem lens?
I believe that I have a duff 16-50 as well and am currently arranging to return it. I have two problems with mine: 1) the SDM focusing motor is sticky. Initially when half pushing the shutter release button the focus motor refuses to move and the camera seems to go through a continuous reset c...
Posted by GlynM on 20/10/2007 - 15:24
16-50 - a problem lens?
It looks like mine is going back to Pentax :-( I'm experiencing the same as GlynM's second point and some back-focusing. Further web searching has thrown up a few interesting, albeit anecdotal, user experiences, such as using the 16-50 with firmware 1.10 improves the focusing, and that one user had ...
Posted by PeterM on 22/10/2007 - 15:54
16-50 - a problem lens?
For more info on 'downgrading' firmware: http://ricehigh.blogspot.com/2007/09/how-to-get-back-to-older-version-of.html PeterM
Posted by PeterM on 23/10/2007 - 10:53
16-50 - a problem lens?
Hi, I really hope your lens is trouble free. I'm just off the phone with Pentax and they are quoting 15-20 working days. It took them 9 days to get the lens on the system despite special delivery and somebody at Pentax signing for it. This had me quite stressed - thought my lens had gone missing!...
Posted by PeterM on 05/11/2007 - 14:10
16-50 - a problem lens?
Hi there guys - haven't been online here for a while... But after taking my 16-50 away for the weekend and it's first proper outing, I spotted some interesting focussing problems! Mine is struggling to get a focus lock in some of the oddest situations, very much like GlynM in one of the first posts ...
Posted by spirit_of_will on 06/11/2007 - 00:09
16-50 - a problem lens?
Hi All, I came across this: http://forums.dpreview.com/forums/read.asp?forum=1036&message=24922733 Now I've had my 16-50 for 6 days and have not thoroughly tested it but there have been a few occasions when depressing the shutter button halfway I do not get a focus point, which I always got...
Posted by fleetwoodjazz on 06/11/2007 - 08:59
16-50 - a problem lens?
I'm hoping when I get my lens back it will be fixed, otherwise I'll probably try for a replacement. Anyway I'll just have to be patient and be optimistic. I have not, however, come across any posts anywhere from anyone who has had their lens returned in better working order. Cheers, Peter
Posted by PeterM on 06/11/2007 - 10:18
16-50 - a problem lens?
I have received a replacement for my faulty 16-50 today. The replacement does not exhibit the sticky focusing motor problem that I had with the original which is great because I was a little worried that this might have been a problem with the camera. Just doing some quick tests inside it seem...
Posted by GlynM on 06/11/2007 - 17:52
16-50 - a problem lens?
I'm going to give mine another workout at the weekend before I drop it back to Chris to take a look at. Pretty sure it's not me as I don't recall the same problem with any previous Pentax or even Sigma lens... If you are after a more accurate match on the serial no mine is 90109XX Will
Posted by spirit_of_will on 07/11/2007 - 17:47
SMC M 50mm 1.2
I'am awating delivery of my K10D with 18-55 kit lens. I have also purchased a FA 50mm 1.4 from the internet. I also spotted a SMC 50mm M F1.2 on the internet for the princely sum of £25.95 which I could not resist, :D , I am know wondering what metering functions will work in the manual mode ?...
Posted by janna on 19/10/2007 - 16:36
50mm 1.4: opinions, images
I would rate the 50mm/1.4 as one of all time favourite lenses. Incredible image rendition and extremely useful for low light photography and portraiture. Used at around f/2.4 it renders skin tones wonderfully. Here's a shot with the *ist-D: http://www.ephotozine.com/photo/401536 (I also have a ra...
Posted by MattMatic on 24/10/2007 - 21:35
50mm 1.4: opinions, images
I may be wrong, but I think the 1.4/1.8K lenses were simply bayonet versions of the SMC Takumars. They changed it slightly to reduce the size for the M series 1.4/1.7 but the basic optical formula is the same. It has always been highly regarded so the same formula was kept for the A, the F and the F...
Posted by Kim C on 25/10/2007 - 16:01
Pancake lens - which one do you prefer?
I have the DA 40 which I like very much. At first I had to take a couple of steps back between spotting a picture and then looking through the camera! It's a fine lens.
Posted by gartmore on 21/10/2007 - 16:08
Pentax K mount lense
Whatevere you do, don't try to force it. If you compare it with a Pentax K fit lens is there anything obviously bent or damaged on the back of your Vivitar lens?
Posted by johnriley on 21/10/2007 - 12:28
Best longish lens for under £400
You might want to try this one at FFordes: 80-200 f2.8 manual focus (probably not KA?) - £99 https://secure.ffordes.com/index.htm
Posted by smc on 23/10/2007 - 13:50
Best longish lens for under £400
You might want to try this one at FFordes: 80-200 f2.8 manual focus (probably not KA?) - £99 https://secure.ffordes.com/index.htm Definitely not KA. I ebayed one of those for about £80 a month or so ago. Not a bad lens at all, but front element turns when focusing, and a bit of vignetting ...
Posted by Daniel Bridge on 29/10/2007 - 10:11
Pentax A 35-70 zoom - dud?
I've got one that I bought new about 15 years ago. The focus and zooming movements are fairly friction free (which is not great), but I wouldn't call it loose or wobbly. I'm afraid that "rather wobbly" doesn't sound good for an A-series lens :? R
Posted by Reuben0 on 24/10/2007 - 13:40
Pentax A 35-70 zoom - dud?
will do....I'll make a video, and post a link...get back to you tomorrow ok?
Posted by Don on 24/10/2007 - 17:00
Pentax A 35-70 zoom - dud?
On a very proportion of the Pentax lenses (and indeed many other makes), removing the front bezel is the first step in removing the front elements for cleaning. It is usually easier to go in this way as it doesn't upset the auto diapraghm which can be a PITA to get back together or the focussing. ...
Posted by Kim C on 26/10/2007 - 09:19
Pentax A 35-70 zoom - dud?
Thanks guys This has allowed me to fix my SMC A 35-70 f4. I found part of the focus ring had broken inside (2x.5mm) and was jamming noticeable about the 55-60 mm range. Cleaned it out, reassembled and aligned the infinity mark maybe a touch short and wow its back in business no jamming and re...
Posted by alan S on 30/10/2007 - 14:10
