Search results for 'back focus' - page 1034
Back focussing issues on a 17-50 Tamron
Worth it to get a good one (hopefully) IMO, as from the few shots that I've so far processed, this lens can be incredibly sharp +1 It's definitely worth persevering, as it's a great lens. I was lucky, it seems, in getting a good copy first time and any focussing issues I've had generally result ...
Posted by sorted78 on 09/03/2012 - 15:44
Sigma 75-200mm F3.8 auto focus
Just picked one up, not had chance to test it to much but I have noticed its back focusing a lot in live view but is fine through the view finder. Was just wondering if anyone else had one and if this is this a common problem or just my copy of the lens? Thanks in advance.
Posted by toy_car_uk on 09/03/2012 - 10:38
Sigma 75-200mm F3.8 auto focus
I just picked one up this morning too at a boot sale... so snap (nearly!) Looks to be a pretty sharp lens, better than I expected. I don't normally try and focus with liveview but tried to see if I could so as to see if I could answer your question. However I find that I cannot hold the camera stea...
Posted by JAK on 08/04/2012 - 13:20
Polarizing lens
That's true glencoe is notorious for being dull and dreary even when everywhere else is sunny. Thanks for the advice I'll put it back in its wee case for now.
Posted by BMurray on 10/03/2012 - 07:27
Polarizing lens
Well. Talk preparing for all eventualities. Stopped at Glencoe set up the tripod and then I was bursting for the toilet. Seriously bursting. Couldn't concentrate on anything. Grabbed a few shots but I'll need to go back tomorrow on the way home.
Posted by BMurray on 10/03/2012 - 16:41
Plans usurped!
I planned to buy a Pentax 12-24mm F4 off a forum member all was going swimmingly or so I thought! Anyway I had previously owned a Sigma 8-16mm from my D7000 (Nikon) and it'd nagged at me when comparing the two Lenses, even resolution across the frame and constant aperture (Pentax) and WIIIDE too wid...
Posted by jules on 10/03/2012 - 09:52
New 50mm?
Model name (tentative): smc PENTAX-DA 50mm f/1.8 Unifocal standard lens for use with PENTAX K-mount digital SLR cameras Maximum aperture of F1.8 for high-quality images with a superb rendition of depth and natural bokeh (out-of-focus) effect Market launch scheduled for 2012 I miss...
Posted by Hardgravity on 11/03/2012 - 08:41
SRB Auto Extension Tubes
Anyone own/used a set of K mount SRB Auto Extension Tubes http://www.srb-griturn.com/slr-auto-extension-tubes-1133-p.asp Are they auto focus? Are they any good?
Posted by NeilP on 11/03/2012 - 21:20
SRB Auto Extension Tubes
It's difficult to say from the photo and description, but I'd agree with moose. These look just like standard 'auto' tubes with an aperture linkage and no contacts. They might have the single contact for use with an 'A' lens, but that's it. Massively overpriced for either type. Keep an eye out on...
Posted by milamber on 11/03/2012 - 22:16
SRB Auto Extension Tubes
It's difficult to say from the photo and description, but I'd agree with moose. These look just like standard 'auto' tubes with an aperture linkage and no contacts. They might have the single contact for use with an 'A' lens, but that's it. Massively overpriced for either type. Keep an eye out on...
Posted by Algernon on 15/03/2012 - 09:57
Converting chinon 135mm M42 to PK mount
Hi everyone, I just got my self Auto chinon 135mm lens. It is a M42 mount lens. I had a bit of problem with converter. I just thought why not to change mount. I have one spare PK mount lens (focus machanisim does not work rest is fine). I dismentlled len PK mount from lens and put on the top of the...
Posted by Melihbozkurt on 15/03/2012 - 21:04
Converting chinon 135mm M42 to PK mount
Hi Melih I have several M42 lenses and keep a PK adaptor permanently fixed on all of them. I have the flush type so no issues with infinity focus and they only cost just over £7 each from ebay. They are not original Pentax ones but they fit very snugly and I have had no issues with any them. ...
Posted by davidstorm on 15/03/2012 - 22:02
Converting chinon 135mm M42 to PK mount
The one you have bought is unfortunately not the correct sort. This one has a flange which stands proud of the camera body and will cause you problems with infinity focus. You need one that fits inside the K-mount on the camera so that your M42 lens is flush with the camera body. do not buy any o...
Posted by davidstorm on 15/03/2012 - 22:59
Converting chinon 135mm M42 to PK mount
Follow davidstorm's advice and use a flush-fitting M42 to K adapter >run it on with a tiny trace of Loctite on the thread >install lens onto body and then tighten it well >leave for an hour or two, and then remove gently. But first: Does the Chinon have an Auto/Manual switch? If not, and you...
Posted by DoctorJeff on 15/03/2012 - 23:48
Converting chinon 135mm M42 to PK mount
I wouldn't think that you really need infinity focus to compare it to another 135mm you already have. Sharpness, bokeh, contrast, color rendition can be compared with the adapter you already have.
Posted by Infrabasse on 16/03/2012 - 18:20
something wide and fast?
Given the fact that you already have an 18mm you would not win that much with a 12-24mm (I am always impressed how much more you can capture with a few mm less focal length down around 10mm. As JAK said - test the 8-16mm (the nice thing with online shopping is, you can order it, test it 2 weeks and ...
Posted by AxelLuther on 20/03/2012 - 08:29
something wide and fast?
As already stated. A good manual focus 24mm f2.8 would be an excellent start. If you feel you really need something wider than the 18mm end of the kit lens then by all means go ahead but as you will be stacking multiple images anyway you don't really need the extra f stops. Just take more pictures...
Posted by MarkD on 20/03/2012 - 09:27
Hoya 135mm Prime
First of all this topic is not about question rather it is kind of review of lens because before I buy this lens, I could't find much information about lens. I tired my chance and I bought one of these lenses from ebay auction 20 pound free p&p. It arrived Wednesday but as I had busy week I couldn't...
Posted by Melihbozkurt on 20/03/2012 - 01:40
Would you swap a 12-24 for the DA15mm?
Here's a couple of images both shot at 15mm which are comparable in some ways - the first with the 12-24 and the second with the DA15. Click on the images to view at full size without PUF re-sizing side effects The comparison's not entirely fair as the first is shot at 1/5 sec at f4 ...
Posted by Dr. Mhuni on 23/03/2012 - 10:16
True Fish eye lens (10/12mm)- a few questions
My use of the Sigma 10-20 has never been for 'lanscapes' in the classic sense. When you get really wide, the view or scene I usually have in mind ends up being pushed right back. I just end up with a lot of grass in the foreground. For me I've personally found the 18-55 best for landscapes. I us...
Posted by Snootchies on 20/03/2012 - 17:49
