Search results for 'back focus' - page 1161
Sigma 100-300 F4
Seems strange that it's back focusing with all of them. Although the one I bought the other day is in excellent condition I may send it into Sigma for a service, I know parts are near on impossible to find for the lens now so maybe a good going over will mean less problems in the future. Can y...
Posted by jeallen01 on 09/07/2015 - 22:07
Sigma 100-300 F4
Just heard back from Sigma (Daniel Cortez, the Service Manager) - he believes that the lens needs a new circuit board to fix the back focus issue and is checking with Japan to see if they are still available. BTW: if you contact Sigma (see their UK website for contact details) they will need the ...
Posted by jeallen01 on 10/07/2015 - 11:04
Sigma 100-300 F4
Just heard back from Sigma (Daniel Cortez, the Service Manager) - he believes that the lens needs a new circuit board to fix the back focus issue and is checking with Japan to see if they are still available. John Heard from Mr Cortez today - he now has the new circuit board and is holding it for m...
Posted by jeallen01 on 29/07/2015 - 21:53
Sigma 100-300 F4
Getting the lens back this afternoon! The board has been replaced to fix (hopefully!) the back-focus problem - so at least some of the spares ARE still available!
Posted by jeallen01 on 21/08/2015 - 12:05
Sigma 100-300 F4
Getting the lens back this afternoon! The board has been replaced to fix (hopefully!) the back-focus problem - so at least some of the spares ARE still available! Was asked to take the K-3 with me but also took the K-5 (and it seems that they have a K-30 for test purposes) - and the repaired lens wo...
Posted by jeallen01 on 23/08/2015 - 19:18
Pentax SMC 500mm f4.5 + A 2X-L Handheld
Had a bash with this combo on a K5iis the other night, I was quite surprised at the quality considering it was hand-held and the SR mechanism only goes up to 800mm :) I couldn't use LiveView for focus because it's virtually impossible to hold this set-up at such a high angle without support for any...
Posted by LennyBloke on 30/07/2015 - 08:22
Extension tube querie
i am not sure if there are settings that need to be changed for an extension tube. I know with a manual lens/extn tube you just switch to manual focus and flash or manual on the dial, with aperature set by the lens aperture ring. Does the extn tube have electrical contacts. Still dont know w...
Posted by screwdriver222 on 05/07/2015 - 21:05
Pentax Lens praise from Ken Rockwell of all places!
I can see the points about the interface. Forgetting this idiot, cos I really don't like him, or his 1990's styled website, I can see how the font etc could be improved. User interfaces have come a long way in the last few years, and I'd like to see Pentax pick up on this. This is not a popular c...
Posted by richandfleur on 10/07/2015 - 03:28
Photozone test of D-FA 50mm
But imagine being stuck with the DFA 50 as the only lens in that range, or worse yet - ones only lens. It's not bad for non moving or non people subjects but... The amount of focus hunting makes it one of the worst examples of Pentax AF - ever. The amount of times is focus hunts regardless of cam...
Posted by 50mpCMOS on 19/07/2015 - 17:20
Lenses for sports
Hi Before chasing new lenses - there are many things to explore. On the face of it you are using a very credible camera and lens combination. Obviously using the right settings for the shots you are taking is important and using manual settings - always to be encouraged - but it is worth firin...
Posted by fritzthedog on 14/07/2015 - 15:23
Lenses for sports
Hi Before chasing new lenses - there are many things to explore. On the face of it you are using a very credible camera and lens combination. Obviously using the right settings for the shots you are taking is important and using manual settings - always to be encouraged - but it is worth firin...
Posted by icemanneo on 14/07/2015 - 16:50
Lenses for sports
And do some tests to see if you need AF adjustment on that lens. Probably a silly question, how would i do this test? I have never done anything like that before (or if i did....it was by accident!) As a start point - read page 47 of the K3 user manual - take a test shot - make minor adjustments (an...
Posted by fritzthedog on 14/07/2015 - 17:30
Lenses for sports
[quote:3496ace15f="Blythman"]And do some tests to see if you need AF adjustment on that lens. Probably a silly question, how would i do this test? I have never done anything like that before (or if i did....it was by accident!) As a start point - read page 47 of the K3 user manual - take a test shot...
Posted by icemanneo on 14/07/2015 - 18:57
Lenses for sports
Hi I haven't used one but the 7Dmk ii is pretty much a camera built with one purpose in mind and that is to "out auto focus" anything else on the market. From all I've read it's not much cop as an all round camera but in that environment with that lens it's going to track moving subjects better t...
Posted by Puggy on 14/07/2015 - 22:58
Lenses for sports
I had a Sigma 70-200 and found it to be a very sharp lens ideally suited to action shots. One thought is the Shake Reduction. I had problems with that when panning before I realised that the SR doesn't really work for panning shots! Turning it off and using higher shutter speeds improved things s...
Posted by icemanneo on 15/07/2015 - 09:48
Lenses for sports
Hi I haven't used one but the 7Dmk ii is pretty much a camera built with one purpose in mind and that is to "out auto focus" anything else on the market. From all I've read it's not much cop as an all round camera but in that environment with that lens it's going to track moving subjects better t...
Posted by icemanneo on 15/07/2015 - 09:55
Lenses for sports
I had a Sigma 70-200 and found it to be a very sharp lens ideally suited to action shots. One thought is the Shake Reduction. I had problems with that when panning before I realised that the SR doesn't really work for panning shots! Turning it off and using higher shutter speeds improved things s...
Posted by percy on 15/07/2015 - 13:43
Lenses for sports
I think for something like tennis you may be better off turning off SR completely (camera and lens) and trying faster shutter speeds of not less than 1/300th and maybe try 1/500th or faster just to see what sort of difference that makes to the sharpness. Either shutter priority or TAV mode and le...
Posted by icemanneo on 15/07/2015 - 18:01
DA* 50-135: A quick quesiton about the focus ring
Hi everyone. I just picked one of these up 2nd hand and have a question about how the focus ring works (there was no manual in the box unfortunately)... So there is the normal "range", I don't know, something to infinity. Once I reach either end of that scale, I am then able to turn the focus r...
Posted by johnieutah on 17/07/2015 - 14:02
DA* 50-135: A quick quesiton about the focus ring
Hi Just checked mine and it does the same might be to do with It being internal focussing
Posted by gtis on 17/07/2015 - 15:52
