Search results for 'back focus' - page 727
Lens QC
Hi Mhuni, I haven't had a duff lens yet... though my SMC-FA 24-90 came back from repair (having cracked the barrel) much sharper than before. Some have had slight focus variations, true, but these are all easily resolved in the K20D. A word of caution regarding the Focus Test Chart (very slight...
Posted by MattMatic on 07/10/2008 - 12:57
Lens QC
I have a Sigma 17-70 and in all honesty can say that it is tack sharp and focuses perfectly, I also have a Sigma 50mm macro and again it is tack sharp although this is a manual focus lens but a joy to use. I have had very few issues with lenses and like hefty1 says, they tend to get used rather than...
Posted by Hazza on 07/10/2008 - 17:16
Lens QC
I have bought 5 lenses since I started,from 3 different manufacturers ,with no problems at all!......I had a problem with my K20 though,terrible back focussing!.....there was a period on here some weeks back when sigma 10/20's seemed to have a problem,there again I have nothing but praise for mine!....
Posted by beginner on 09/10/2008 - 17:16
Lens QC
Yes, I've seen a lot of gripes about QC of the Sigma 10-20 - but when people get a good one, everyone seems very happy with it. I was thinking about getting a super-wide lens when I'm back in the UK at Xmas and was looking at this and the DA12-24. Unusually, from the photos on Flickr I actually like...
Posted by Dr. Mhuni on 10/10/2008 - 09:43
Pentax F* 300m f4.5
Is it much different to the 300mm smc f4 M star? IT is a differnet optical design: slightly slower aperture of course, but much closer focus (2m rather than 4) and autofocus if you should want it. The built-in tripod mount improves handling over the earlier (and later) versions.
Posted by stevo on 09/10/2008 - 10:08
SMC-M 40mm
I used to have one of these but sold it a while back as I rarely used it. The small size was slightly useful (I used to take it with an MX for hillwalking trips) but optically, while ok, it's no star.
Posted by niblue on 19/10/2008 - 11:20
Best Pentax 35mm lens for film?
For a long time now I've been saving my pennies in order to get a FA31 to use on my two Pentaxs (K10D & MX), however, now I'm getting close to the stage where I'm going to shell out the money I'm having a change of heart... As great as the FA31 seems to be, I can't help but feel I would actually ...
Posted by hefty1 on 12/10/2008 - 23:38
Best Pentax 35mm lens for film?
No brainer really :) You should still get the 31 because: 1/ The 31 is the best lens Pentax have made. 2/ It's only going to go up in value. 3/ The FA limiteds are no longer made and so will become unavailable at some point. 4/ You need to complete your set :evil: So you're the little v...
Posted by hefty1 on 13/10/2008 - 16:38
Best Pentax 35mm lens for film?
It's a tricky decision, if I don't buy the 31 I know I'll kick myself down the line for all the reasons you've stated; if I don't buy the DA35 I'll kick myself down the line because the 31 doesn't focus close enough, is too big, doesn't have quick shift... Short of buying both (which I really can't...
Posted by Mannesty on 13/10/2008 - 16:55
Best Pentax 35mm lens for film?
If I don't buy the DA35 I'll kick myself down the line because the 31 doesn't focus close enough, is too big, doesn't have quick shift... If you buy the 31 now, you can always buy the 35 later. Might not be true the other way round. If for some reason (can't think of any myself!) you don't like ...
Posted by Reuben0 on 13/10/2008 - 17:17
Best Pentax 35mm lens for film?
Voice in back of head does remind you there might be a 31mm available locally! Perhaps you need to try it out to be sure....:wink:
Posted by Unlocker on 13/10/2008 - 17:40
18-125??
I have the Sigma 18-200 and I have not been disappointed with it, I bought it to replace the kit lens and give me a general usage lens that was not going to brake the bank. I compaired it with the Tamron and went for the Sigma because it had snapier and quiter focus. It also works very well with m...
Posted by beakynet on 17/10/2008 - 23:57
18-125??
Ohhh, just seen Chris's email from SRS saying that the Sigma 18-125 for Pentax will be in shortly - I take it all back:)
Posted by Donut on 21/10/2008 - 14:53
Frustrated with pentax 1.7 50mm smc manual focus lens
Above are two photos shot with this lens when its good its very good as in the horse pic 1 photo.Pic 2/// I can not seem to get permanent results from it as I do with an auto focus lens. Can someone offer some tips to try and help me get better results more often.
Posted by philstaff on 20/10/2008 - 22:32
Frustrated with pentax 1.7 50mm smc manual focus lens
Philstaff, I really can't see a problem with focus in #2. The dog's eye should be the focal point and seems clear to these old peepers. Do you remember what f stop you were using? The hores's head is more on plane than the dog's body, and would appear to be more totally in focus at a larger...
Posted by Mac on 20/10/2008 - 22:44
Frustrated with pentax 1.7 50mm smc manual focus lens
Using the grass in #2 as a reference, and assuming your camera was at about the same height as the dogs head, I'd say your plane of focus was just in front of the dogs nose. Operator error I think :D
Posted by Mannesty on 20/10/2008 - 22:56
Frustrated with pentax 1.7 50mm smc manual focus lens
Just checked the f stop in the properties Mac and it's just saying F0 exp was 1/250 at 50mm. I would think it was set at f 5.6 or there abouts. I do try to focus on the dogs eye and hope for a decsent dof. Here is anothe r took with a Tamron 70/300. I can more or less hit these shots all day wi...
Posted by philstaff on 20/10/2008 - 23:01
Frustrated with pentax 1.7 50mm smc manual focus lens
Using a manual focus lens may seem a bit tricky if you're not used to it. First thought do make sure that the dioptre setting on your viewfinder is correct. This should be set looking through the viewfinder at a blank surface or perhaps blue sky. The lens does not have to be focused. Just adjust ...
Posted by johnriley on 20/10/2008 - 23:06
Frustrated with pentax 1.7 50mm smc manual focus lens
Thanks John will do very helpful advice once again. Regards Ian.
Posted by philstaff on 20/10/2008 - 23:12
Frustrated with pentax 1.7 50mm smc manual focus lens
First question: Why does the aperture show as f/0 ? Maybe the contacts need cleaning if it's an A series lens. Second question: Do you wear glasses or contact lenses when using your camera. AF lenses are unaffected by either, but MF probably will be affected if you haven't set up your dioptre corre...
Posted by Mannesty on 20/10/2008 - 23:12
