Search results for 'back focus' - page 721
DA*16-50 vs DA17-70
I would have to say my 16-50 is my most used lens at the moment, I have done a few family functions of late, mostly indoors and at night and I can't praise it enough, focus lock has not been an issue and the results speak for themselves. But then I have had very little use with it on landscapes eith...
Posted by Clarky on 16/08/2008 - 15:39
DA*16-50 vs DA17-70
The questions I'd ask (and why) are these: which lens has closer focus abilities? (when shooting wide I like to get up close). Which lens has a constant aperture? (I do own and use studio lights, and have some work that requires very high standards, so having to recalculate exposere just to zo...
Posted by Don on 16/08/2008 - 15:51
DA*16-50 vs DA17-70
I don't think that is an issue with the lens. The K10D's AF sensors need very strong contrast which is why it isn't very good in low light or flatter scenes. Definately an issue with the lens when it's a faulty one! Sometimes outdoors in good light, just wouldn't focus even with good contrast, K10 o...
Posted by Unlocker on 16/08/2008 - 16:40
extension tubes for macro
Hello all you good people. having lurked and then dived into this forum i ended up buying Chris's extension tubes on ebay and getting a 50mm 1.7 lens for macro work. being a bit of a novice and just taking pictures for fun and my own enjoyment i thought i'd share some thoughts and my top 10 ti...
Posted by laurencea on 18/08/2008 - 16:37
extension tubes for macro
don't need a macro lens now... i have extension tubes! You say that now, but wait til you've actually tried a macro lens. ;-) No more swapping tubes about, just focus from infinity all the way down to lifesize. Then, you pop the tubes on the macro lens... :-) Tubes are a great way to get into m...
Posted by Daniel Bridge on 18/08/2008 - 19:06
DA 55-300 - official review
Just came across this whilst browsing the www...a mini-review of the new DA 55-300 by popphoto. The sharpness results back-up what many of us current 55-300 owners know..it's pretty impressive !! http://www.popphoto.com/cameralenses/5469/pentax-da-55-300mm-f4-58.html . . . . .
Posted by simonkit on 18/08/2008 - 23:09
pentax 17-70 sdm
I ordered a sigma 17-70 from srs on monday and the parcel arrived this morning when i open the box i noticed they had packed a pentax 17-70 instead of the sigma being an honest man i informed them and sent it back but i gave it a quick try on my k10 and the sdm focus is so quiet and quick i thoght a...
Posted by adamjt7 on 19/08/2008 - 13:27
pentax 17-70 sdm
At the time of your posting, I doubt many here had this lens. Maybe somebody has now. If you can remember, where did you have the focus selector set, Auto, Sel, or centre?. Which lens did you use which gave good focus? Some older lenses only use the centre spot, irrespective of where the selec...
Posted by Mannesty on 03/10/2008 - 00:01
pentax 17-70 sdm
I f i can remember i had the focus selector set to center and the lens i used to test against was a tamron 18-250mm which was spot on.
Posted by adamjt7 on 03/10/2008 - 05:54
pentax 17-70 sdm
This is a bit alarming, especially as I intend to upgrade some of my glass soon, I think I read that the 16-50 had similar problems when first relesed and I understand that ephotozine have not yet reviewed the lens because of that very problem. You think Pentax would have learned from its mistakes....
Posted by fatspider on 03/10/2008 - 13:45
pentax 17-70 sdm
As an aside to this post, why cant the focus point be displayed in the EXIF ? something for Pentax to think about maybe. It is ;) Use PhotoME - it'll show you tonnes of information (including the camera temperature :shock:!) Matt
Posted by MattMatic on 03/10/2008 - 14:08
pentax 17-70 sdm
I have just returned a Tamron SP AF70-200f2.8 as it had the same problem, It always focus beyond my selected area, (usually centre zone) in single, servo & manual modes on my K10D & 1*ist D.
Posted by Pegasus105 on 15/10/2008 - 18:44
pentax 17-70 sdm
I have one and am very happy with it. No focussing problems at all. This is purely from taking photos with it, I haven't used a focus test sheet with it or anything like that.
Posted by Gwyn on 15/10/2008 - 19:07
pentax 17-70 sdm
Has anyone else bought this lens since with good results? I returned the first one I bought as, like the OP's, it would not focus on the point I was aiming at but went for the background every time and also was very soft at 70mm especially at longer focus distances. I tried a couple more but...
Posted by Critical-i on 03/11/2008 - 01:00
pentax 17-70 sdm
The pictures looks ok if you focused in the centre of the image has the bottle to right of centre looks nice and sharp.If you had a bad copy it would stand out that focus was well out.
Posted by adamjt7 on 10/11/2008 - 10:31
pentax 17-70 sdm
Interesting, I have a Sigma 24-70mm F2.8 and I have the exact same problem with focusing on the K10D (focus point selected is out of focus and background is in focus) Seems that the problem is not to do with the lenses, but the K10D itself. I have tried the Sigma on my DS and K20D with no prob...
Posted by Offertonhatter on 10/11/2008 - 18:37
pentax 17-70 sdm
A second issue arises here. If using flash it will enable small apertures and hence lots of depth of field (relatively) so the presence of any mis-focusing will be masked. I am also a bit puzzled by this statement, we use a lot of different equipment to help us with focusing such as split screens, e...
Posted by Daniel Bridge on 11/11/2008 - 10:46
pentax 17-70 sdm
Nothing is a bad thing if it works for you. The point I was making was that using flash will help with slight focusing errors because of the smaller apertures available compared to available light. Personally I find hand held macro almost impossible, but with moving insects you can't avoid tha...
Posted by johnriley on 11/11/2008 - 11:28
pentax 17-70 sdm
I was thinking of getting either the Sigma 105mm or Tamron 90mm af lenses but after using the Sigma 50mm I can now see why getting the Pentax 100mm with quick shift focus would make a lot more sense.
Posted by Mike-P on 11/11/2008 - 18:59
pentax 17-70 sdm
I was thinking of getting either the Sigma 105mm or Tamron 90mm af lenses but after using the Sigma 50mm I can now see why getting the Pentax 100mm with quick shift focus would make a lot more sense. This was my reasoning too and I haven't regretted the decision once (and the Pentax is quite a bit l...
Posted by hefty1 on 11/11/2008 - 19:35
