Search results for 'back focus' - page 747
K20D and manual lens - setting shutter speed?
Very true. Sometimes quick searches turn up trumps on the net, sometimes it can take a bit of digging. I wonder if there is some way of setting up a FAQ type thing for the site? There are various recurrent questions. for example: manual lenses, back/front focusing, best AA rechargeable batteries ...
Posted by Anvh on 27/01/2009 - 00:37
Pentax postponed the launch of DA Star 55mm F1.4 SDM to February
Thats a very interesting point Kris, certainly one my brain would never have thought of a 55mm lens will form exactly the same image on an APS sized sensor as it would on 35mm film, you just dont get all the image on the sensor. BUT...would a 55mm lens designed to form a smaller image circle have...
Posted by johnriley on 25/01/2009 - 01:17
Pentax postponed the launch of DA Star 55mm F1.4 SDM to February
This has been covered before both on here and in a recent article on lenses I did for Pentax User Magazine. Have a search on the forum. Order a back issue..... Which issue? :D Thanks, Kris.
Posted by womble on 25/01/2009 - 10:58
Pentax 55-300 or Tamron 70-300 advice on a k100Ds
Hello , I am a new member as from today and have just recieved my K100Ds and kit lens that seems rather limiting at the longer end only 55mm . I need advice for a longer lens to partner my 18-55 kit lens on my new K100Ds, Looks like with my small budget its between the Tamron 70-300 or Pentax 55...
Posted by blackmore7 on 23/01/2009 - 08:10
Pentax 55-300 or Tamron 70-300 advice on a k100Ds
Tough comparison. Jessops were (are?) selling the Tamron for £60 and for that money it is a real bargain. It is really quite sharp up to just over 200mm then gets softer as you approach 300. It even has a macro function which is a bonus. If you aren't shooting high contrast edges you will be very h...
Posted by MarkD on 23/01/2009 - 16:00
Opinion wanted on wide-angle lens converters
Are you talking about the kind that screws into the filter thread of the lens? Or os there a sort that goes behind the lens? Back in the late 80s when I worked in an optics development lab, our 'lunchtime' project over several years was to make a front-mounted supplementary lens. We ended up maki...
Posted by GrahamNR17 on 26/01/2009 - 19:09
MTF Priority program line on K10D
I suspect that you are mistaken about all of that, or your camera is behaving differently to mine. I tested the mode before I posted my above message on my K20D, including indoors. I don't understand how you got f4 with the lens cap on with your f2.8 lens. I got f1.4 on my FA 50mm f1.4 with lens ...
Posted by iceblinker on 28/01/2009 - 14:05
is this lens on ebay worth a punt? SMC Pentax-FA 1:4.7-5.8 100-300mm
"These are sold for spares or repair - they've got some some mould inside (from storage in high humidity), but my research tells me that this can be relatively easily solved - you just need to open them and clean them." Just? :shock: Cleaning a fixed focal length, manual focus lens is one thin...
Posted by Daniel Bridge on 27/01/2009 - 15:39
da* 50-135 sticky focusing
My da* 50-135 suffers sluggish focusing especially in cold weather. It is generally slower than my old screw drive lenses and sometimes refuses to focus at all. Unfortunately its now out of guarantee. Can anyone recommend a good repairer? Incidentally, this is the best of my Pentax lens collection a...
Posted by BarMac on 29/01/2009 - 21:54
da* 50-135 sticky focusing
Now I am depressed.:cry: I have been a member of the DA*50-135 owners club for about 12 hours now (having found no negative feedback on them anywhere). I have two in-lens focus motor lenses, the 50-135 and a Sigma 150-500, and I was surprised to find that the Sigma seems faster to focus and qu...
Posted by Oggy on 29/01/2009 - 22:32
da* 50-135 sticky focusing
Mine is doing the same thing, sometimes it just won't focus at all. Just tried it now, took about 10 seconds or so to lock on the 1st time, as if it was 'stuck' a bit, then it was OK apart from a squeak. Will be taking it back to SRS at some point to get it sorted, but whilst it is usable, with a...
Posted by Unlocker on 30/01/2009 - 16:48
da* 50-135 sticky focusing
I sometimes find with mine that it won't focus if it is a long way off but a slight manual nudge and it kicks in OK. It has never been much (any?) faster at focusing than my screw-drive lenses but it is almost silent. Best wishes, Kris.
Posted by womble on 31/01/2009 - 00:24
Water droplets on Lenses and Camera Body
Stefan, Great to hear back from you :). Keep snapping and let's see some of those photos. I have been diving into macros at the moment, weather not being so great to take my 55-300 for a good spin. But been enjoying macros at the moment and learning a lot. Am off to get the magnifier eye p...
Posted by aminstar on 16/02/2009 - 11:13
Water droplets on Lenses and Camera Body
Amin, I've internet now *woohoo* Will upload some shots shortly first need to answer all me mails now though :? How is the eye-piece working, I was thinking of getting one too but didn't do it in the end since I wear glasses and wasn't sure how much I see through it. I use MF all the time,...
Posted by Anvh on 19/02/2009 - 12:15
Water droplets on Lenses and Camera Body
Hi Stefan Nice to see you back in full steam heheheh. Let's see some pictures then when you can upload them. Eye piece is great, I really like it, helps me a lot when focusing. Specially for my macro work. Welcome back :) Amin
Posted by aminstar on 19/02/2009 - 13:08
Water droplets on Lenses and Camera Body
Hey Amin, How much do you see through the viewfinder, can you still read the numbers clearly on the bottom? I now need to move a little bit to read them since my eye is already further from the screen and I'm worried to I only see half of what you see if I would use the eye piece :| It's good...
Posted by Anvh on 19/02/2009 - 14:11
Water droplets on Lenses and Camera Body
Hey Amin, How much do you see through the viewfinder, can you still read the numbers clearly on the bottom? I now need to move a little bit to read them since my eye is already further from the screen and I'm worried to I only see half of what you see if I would use the eye piece :| It's good...
Posted by aminstar on 19/02/2009 - 14:23
Interesting Cheap Primes
Are these any good? http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&rd=1&item=170299777361&ssPageName=STRK:MEWA:PIC&ih=007 Optically the same as the M version, which I know from experience is good. Will be bid up high because of the A setting. http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&rd...
Posted by iceblinker on 04/02/2009 - 00:56
Interesting Cheap Primes
You can get genuine ones (adaptors) on fleabay but I keep getting outbid at the last moment by 50p. I might have to admit defeat and just order one from SRS. I wonder if it has a 2 year warranty :D The 50mm is a nice lens, and those A/M series lenses look so tiny on the K10D :!: Hefty... was i...
Posted by womble on 04/02/2009 - 22:28
Interesting Cheap Primes
A small update :) I bought a 50mm 2.0f A prime about a month ago. which I like, though personally 50mm is a bit long for me. So have just bought a battered looking(well cosmetically used) 28mm 2.8f from ebay for 20euro :) I quite enjoy the manual focusing. The 50mm came with a metal strong ...
Posted by RaV on 05/03/2009 - 22:11
