Search results for 'back focus' - page 631
specific lens for *ist D
I am after some advise re the lens compatibility for the *ist D I wanted to double check that it is fully compatible with my Sigma lens, specifically... Sigma UC Zoom 28-70mm 1:2.8-4 Sigma DL Macro 70-300 1:4-5.6 Sigma Zoom 18-35mm 1:3.5-4.5 They are K-af Bayonet mounted lens I am assu...
Posted by catterm on 26/05/2004 - 11:00
Pentax MZ-50 camera and 28-80 lens for sale
Pentax MZ-50 Camera RRP £200 (but now superceeded) with... SMC PENTAX-FA Zoom 28mm ~ 80mm ƒ/3.5-5.6 Optical Specification Min. Aperture: 22 Angle of View: 75~30.5 Min. Focus Distance: 0.40 Max. Diameter: 71.00 Max. Length : 83.50 Weight: 380.00 RRP: £159.99 Total RRP ab...
Posted by Anonymous on 09/06/2004 - 14:48
Quality MF zooms for sale
Manual focus high quality zoom lenses with PK/M mounts (no elec contacts) Vivitar S1 70-210 f3.5, sn 37221115, boxed and mint condition complete with 62 mm skyight filter: £50 Tamron 35-80 f 2.8-3.5 62mm filter thread sn7930817 with case and PK mount, this is SP spec from before they started c...
Posted by Kevin Stephens on 11/06/2004 - 18:48
Fungus/mould in lens - worth repairing?
Hi all I bought my girlfriend a P30t with an old Pentax A 28-80 f3.5-4.5 lens, unfortunately there is a lot of mould on the glass and was hence 'sold as seen', and I was really just after the camera body. Does anyone know how difficult it would be for an amateur like me to have a go at cleanin...
Posted by mattie on 14/06/2004 - 18:00
Sigma EX 28-70 Going cheap at Jessops
:( Don't bump it on anything, Sigma lenses are made of easily breakable plastic. Someone must have looked at my camera, and bumped it back down on the table, which caused large chunks to break out of the lens, where the cover snaps in. This leaves the lens in a ruined condition. Ian
Posted by Anonymous on 20/06/2004 - 13:50
Pentax-F 1:3.5-4.5 35070mm. Comments please.
I just came across this topic because I was looking to see if there were any comments on zoom lenses in the 35-70mm format. I have just bought a Pentax-A 35-70mm f3.5-4.5 lens on eBay but I have not yet taken any pictures with it, as I am unimpressed. I cannot fault its condition, as it is excel...
Posted by Hayesgooner on 09/03/2005 - 13:21
Pentax-F 1:3.5-4.5 35070mm. Comments please.
You have a potentially excellent lens that sounds as if it is very worn and poor condition. Focusing on Pentax lenses should be as smooth as silk, but not loose and sloppy. Although some very long lenses are designed to focus beyond infinity, usually mirror types that need to be able to compensate f...
Posted by johnriley on 09/03/2005 - 15:44
Pentax-F 1:3.5-4.5 35070mm. Comments please.
Hi, When Pentax introduced the A series lenses, the 35-70 was an F4 refered to earlier. This was only in the brochures for about a year when it was replaced by the 3.5/4.5 version which lasted for 5 years before giving rise to the F version. The early F4 version is a very good lens and most of thes...
Posted by Kim C on 09/03/2005 - 15:50
Pentax-F 1:3.5-4.5 35070mm. Comments please.
I have recently had these three variants of this lens side by side to test, all bought on eBay for about £20 each. So they are used not new samples, though none seemed to have suffered obvious abuse. I used them on my new *st DS so I can't comment about edge or corner performance on full-frame 35mm ...
Posted by Anonymous on 03/06/2005 - 16:01
Pentax-F 1:3.5-4.5 35070mm. Comments please.
Hi Simon, The focus ring on my F4 is great but I think I have been very lucky. The 3.5/4.5 are worse but about 90% of the 35-70 I have looked at have been so loose as to be almost unusable. I have also come across a problem with the 3.5/4.5 in that they can also be notchy and uneven. With the F4 a ...
Posted by Kim C on 09/06/2005 - 12:49
Pentax 17-45
John, I took some test images on the Z1 with the SMC-DA 16-45 at the weekend to finish off the Z1's final film (yes, it's going to have to go, the *istD is just too good!). The results should be interesting. As soon as Fuji get them back, I'll scan and post them. Through-the-viewfinder is i...
Posted by MattMatic on 29/06/2004 - 13:14
Pentax 17-45
John, I've received the Provia slide back, scanned it (rather hurridly) with an Nikon LS40, and posted a few 1024 pixel wide test images. http://www.pbase.com/mattmatic/smc_da_test Hopefully that should give a good idea of its performance on 35mm. To my mind, it's pretty good! Quality is wond...
Posted by MattMatic on 05/07/2004 - 13:14
Pentax 17-45
Just taken some architectural photos with the 16-45. I'm a bit disapointed with the level of barrel distortion at 16mm I must admit - this is a landscape rather than architecture lens! Any bright ideas for an ultrawide with good drawing at a vaguley sensible price? Otherwise I will just have to resi...
Posted by amilner on 25/11/2005 - 10:57
SMC pentax fa zoom lens 80-320mm
As a general principle, if you start the lens at a low price it can encourage people to start bidding. Then you sit back and hope! If you want to, you could just start off at your minimum price or alternatively have a reserve price. eBay does have quite a lively sale of lenses so you should be OK. A...
Posted by johnriley on 04/07/2004 - 20:10
question about the Pentax 100 mm FA 2,8 Macro lens
I bought this lens used and did not receive a manual. Im wondering if anyone can tell me what the two buttons on the lens are used for. One is a clamp on/off button, the other is apparently a focus thing. I´m new to this so is anyone willing to describe what these buttons do? how should i use...
Posted by anikgol on 30/07/2004 - 00:10
question about the Pentax 100 mm FA 2,8 Macro lens
One is a focus restrictor to limit the range (either long-to-mid or mid-to-short). It saves the lens hunting from macro to infinity and back again ;) The clamp allows you to create some friction for the focus ring. This is useful when you are trying to manually focus with macro and allows more a...
Posted by MattMatic on 30/07/2004 - 09:17
Lens cross reference
Hi Steve Very unlikely, even if you can bodge up/buy an adapter (the physical lens mounts are all very different), you'll lose pretty much all of the information and features of the lens (and maybe even metering). Modern lenses provide the body with quite a bit of info, such as focal length (amo...
Posted by mattie on 12/08/2004 - 21:04
Lens cross reference
Hi Just following on from George's statement, I think that the minor brands use the Pentax bayonet as it's an open standard, with no restriction - I was under the impression that most of the others are copyrighted and patented to death, hence no third party uses them. I don't know if this holds ...
Posted by mattie on 13/08/2004 - 10:16
SMCP-FA 50mm f/2.8 Macro
Optically, the lens is superb. However: If you just want it for macro, then auto-focus is not a huge benefit. Many macro photographers prefer 100mm to 50mm because you can work at a significantly greater distance from the subject. All Pentax macro lenses are excellent, so as long as it...
Posted by George Lazarette on 13/08/2004 - 23:00
SMCP-FA 50mm f/2.8 Macro
One more thing, on top of JR's point, is that generally macro lenses differ from standard lenses in two ways: They tend to have a flatter field of focus (so if you photograph a wall, the ends will be in focus as well as the middle), and They can focus closer. Neither of these qualities impi...
Posted by George Lazarette on 14/08/2004 - 08:46
