Search results for 'back focus' - page 1033
Your walk around lens?
I've just come back from two weeks in Madeira and Porto Santo (city, coast, and mountainous countryside) where I deliberately took only my DA 17-70. Most of the time it did everything I wanted, and avoided me carrying extra lenses (the K20 + one lens is heavy enough on 10-15 mile hikes in my view)....
Posted by Stanovich on 08/03/2012 - 22:34
135mm prime comparison
I recently got an SMC Pentax-A 135/2.8 and noticed it bore a striking resemblance to my Takumar Bayonet 135/2.8. I had read that they appeared to share an optical scheme but the Takumar Bayonet lacked SMC coating. I had a few minutes this afternoon and set out to compare the Takumar Bayonet an...
Posted by sorted78 on 08/03/2012 - 21:53
135mm prime comparison
I've seen the CZ rated as the best legacy 135mm there is, but the K seems just as good and faster too, though much more expensive. I think there isn't a lot in it - a lot of the choice between them comes down to sample variation and subjectivity. I prefer the K135 as the combination of nicer mechani...
Posted by sorted78 on 09/03/2012 - 15:53
135mm prime comparison
Anyone tried a direct comparison of the SMC K 135mm f3.5, SMC K 135mm f2.5 and the SMC M 135mm f3.5 :?: No, but I have compared the SMC Takumar 135 F3.5 with the SMC K135 F2.5. For outright IQ and colour rendering the SMC Tak is right up there with the K135, possibly even beats it. For out of focu...
Posted by davidstorm on 06/04/2014 - 12:27
135mm prime comparison
A couple of years ago they were selling for close to £150 for a very good copy, now it is much closer to £100 (or less in some cases) :( I think Gwing hit the nail on the head when he said it is one of those few special lenses - if you're a manual focus fan then this is one to keep :D
Posted by LennyBloke on 10/04/2014 - 14:55
135mm prime comparison
Blimey. I am a manual focus fan and it is a lovely lens. But I just don't use it. The 100macro, the 50-135 are the ones usually called upon to do a job. I think I'd better hang on to it until prices go back up.
Posted by DrOrloff on 10/04/2014 - 15:03
135mm prime comparison
I think Gwing hit the nail on the head when he said it is one of those few special lenses - if you're a manual focus fan then this is one to keep :D What's it got that the cheapo M135/3.5 doesn't have - beside the extra one stop ? Is it actually useable at f2.5 ?
Posted by kh1234567890 on 10/04/2014 - 15:36
135mm prime comparison
M135's at dawn :) Stand back to back, 135mm apart, turn and shoot (a flower):D
Posted by Offertonhatter on 10/04/2014 - 22:08
Back focussing issues on a 17-50 Tamron
Hi all, I recently bought a Tamron 17-50 f/2.8 for my k10d from Amazon. The first one I received had pretty bad back focusing issues. I contacted Amazon and they sent me another straight away. Unfortunately I was off to Sri Lanka, for which I needed the lens, and only had an hour or 2 to test ...
Posted by johnieutah on 08/03/2012 - 21:56
Back focussing issues on a 17-50 Tamron
You don't need the crops to see how bad that is. Send it back for replacement.
Posted by Mike-P on 08/03/2012 - 22:50
Back focussing issues on a 17-50 Tamron
Apologies if it's a stupid question, but presumably in the example above you are certain the AF point was on the tip of the boat? I only ask because in my experience, the 'central point' is actually more of a small region than a point, so the camera may be focussing on a point further back on th...
Posted by sorted78 on 09/03/2012 - 06:10
Back focussing issues on a 17-50 Tamron
Apologies if it's a stupid question, but presumably in the example above you are certain the AF point was on the tip of the boat? Good remark. AF is not the God and you still have to get used to it and make sure it focuses correctly or simply - where you plan. I have a good example - my AF miss rate...
Posted by superdavis on 09/03/2012 - 08:13
Back focussing issues on a 17-50 Tamron
Welcome to the Tamron 17-50. I don't believe you will find a copy that won't do this. I recommend checking focus on the screen immediately after the shot. I have my K200D set up to zoom in 8x with one click of the rear wheel for checking focus quickly.
Posted by Jonathan-Mac on 09/03/2012 - 09:14
Back focussing issues on a 17-50 Tamron
+1 on accuracy (or otherwise) of AF points. I've been following a thread elsewhere which majors on this issue, but, to ensure it's a lens problem try shooting a subject using the Tamron plus another lens at the same focal length, aperture, etc. I'd take the test shots with the camera mounted o...
Posted by JohnX on 09/03/2012 - 09:19
Back focussing issues on a 17-50 Tamron
I know that Pentax AF points unfortunately cover a large area (one of my main problems with Pentax) but you would have to have pretty bad aim or very shaky hands to miss a target that size judging from the full frame picture.
Posted by Mike-P on 09/03/2012 - 09:30
Back focussing issues on a 17-50 Tamron
Welcome to the Tamron 17-50. I don't believe you will find a copy that won't do this. I recommend checking focus on the screen immediately after the shot. I have my K200D set up to zoom in 8x with one click of the rear wheel for checking focus quickly. I used to own Tam 17-50, that did not have t...
Posted by superdavis on 09/03/2012 - 09:32
Back focussing issues on a 17-50 Tamron
Actually, thinking back .. one of my K10D's AF started drifting after a lot of use. I had to use the hacked firmware to bring it back in line as it was out by about 7 in the end.
Posted by Mike-P on 09/03/2012 - 09:35
Back focussing issues on a 17-50 Tamron
Welcome to the Tamron 17-50. I sent back two copies of this lens a couple of years ago with the same problem. A friend of mine had a good copy which I borrowed and which was a different experience altogether, so I suppose it depends on luck (and your camera - no individual lens focus adjust on the ...
Posted by seaside on 09/03/2012 - 10:07
Back focussing issues on a 17-50 Tamron
The first copy I received I did all of the recommended tests to check the QC: used a tripod, same aperture, shutter speed etc... I was pretty shocked by the results, compared to my kit lens (18-55)! I sent the shots to a friend whom then informed me of this back focussing issue. The second copy...
Posted by johnieutah on 09/03/2012 - 13:51
Back focussing issues on a 17-50 Tamron
Suppose you could always buy a proper lens? :roll: Pentax 17-70 f4 at Amazon £302.92 http://www.amazon.co.uk/exec/obidos/ASIN/B001F514EA/watersphotogr-21/ref=nosim
Posted by JohnX on 09/03/2012 - 14:26
