Search results for 'back focus' - page 710
lens or body faulty?
The general setup is this: 1. Get the fastest lens you have (an f/1.7 or f/1.4 is a good choice) 2. Use the focus chart 3. Set the camera on a tripod, pointing at 45 degrees to the chart 4. Get the K10D into debug mode 5. Using the AF focus adjust menu, make a note of the current adjustment (...
Posted by MattMatic on 16/05/2008 - 13:02
lens or body faulty?
I have what might seem like a stupid question, but I'm not sure how/if this affects the results... On my camera, the center auto focus point (actually all of them) appear to be not exactly centered. If I take a blank piece of paper with a black dot on it and move it around, I can find the edges ...
Posted by amoringello on 16/05/2008 - 15:04
lens or body faulty?
I was wondering the same thing, that's why I posted an image with centre of image and focus indicator point marked on them. But the perpendicular image I used for levels was way out of focus also, and that wouldn't be affected by the position of the centre point, so my camera is definately not focu...
Posted by Darkmunk on 16/05/2008 - 15:42
lens or body faulty?
Huh? That's why the centre black bar is so large - to filter out any focus point offset. The focus test chart at 45 degrees has such a huge and unmissable central target that the camera just has to get it. Ok, so the focus point may be a fraction out (looks less than 1mm for that view), but lookin...
Posted by MattMatic on 16/05/2008 - 21:01
lens or body faulty?
OH MY GOD!!! i HAVE A NEW LENS...OOPS CAps lock... bloody 'ell, why is there so much mystery surrounding this? that has totally transformed my lens ( I say lens, cos I may have buggered up all the others :lol: ) I went up in 30s until I reached 120 (at which point I had to move the tripod bac...
Posted by Darkmunk on 16/05/2008 - 22:16
lens or body faulty?
OMG!! I have been kicking myself for having poor focus skills but after running through this adjustment, I am really looking forward to using my camera! The test chart witha 45 dgree angle doesnt' show a nice 30/60 split in front/back DOF, but for real life captures -- like people say, "its ...
Posted by amoringello on 17/05/2008 - 01:59
lens or body faulty?
Not sure if it is clear in this image... And maybe my testing is flawed, but whether you focus with the line at the top of the AF area or at the bottom of the AF area does make a difference. Of course this movement adjusts distance, relative size, etc... but all of that is part of making the ima...
Posted by amoringello on 17/05/2008 - 02:35
lens or body faulty?
I was worried that if I missed the thick focus line (which the red lines indicate I did) then the camera would try and find something else. I haven't had a chance to walk around testing normally, but now I am actually looking forward to it instead of dreading coming home and plugging the card in. ...
Posted by Darkmunk on 17/05/2008 - 09:11
lens or body faulty?
before and after... actually this first one looks just plain out of focus, bad example possibly, but you'll have to believe me when I say that the images just got better and better until I stopped and did the test chart. (I was focussing on the silver ring, the red line indicates the geometric centr...
Posted by Darkmunk on 17/05/2008 - 10:00
lens or body faulty?
Help!!! I'm terribly confused. :? :? I was seriously considering updating my DL2 to a K10D, by buying one of the last ones from SRS. But now I'm having doubts as I don't want to do any adjustments to the camera. So a question - Does this back/front focussing occur with all K10Ds? If so doe...
Posted by HowardJ on 17/05/2008 - 11:56
lens or body faulty?
So a question - Does this back/front focussing occur with all K10Ds? No. The focusing is normally correctly adjusted in the factory. Remember the silent majority - the users who don't need to post any messages about back/front focusing because they do not have the problem. People have been ta...
Posted by iceblinker on 17/05/2008 - 14:34
lens or body faulty?
Personally I wouldn't expect to have to enter the engineering modes and would leave it to a repair house if it were ever needed. Ideally this would be the case. These days, though, it seems more and more common that repair organisations are careless and lazy, preferring to fob off customers until t...
Posted by ChrisA on 17/05/2008 - 14:45
lens or body faulty?
Ideally this would be the case. These days, though, it seems more and more common that repair organisations are careless and lazy, preferring to fob off customers until they go away, rather than taking the matter seriously and investigating properly. It's common enough for a camera to come back ...
Posted by Darkmunk on 17/05/2008 - 15:29
New Lens??
The Sigma lenses listed focus down to 20cm, except for the 24-70mm which only manages 40cm. None of them are true macro lenses. You could also consider the Tamron 17-50mm F2.8 and Pentax 16-45mm F4 if you could live with minimum focus of 27 or 28 cm.
Posted by iceblinker on 17/05/2008 - 19:28
New Lens??
I have the Sigma 18-55mm f/2.8 - Sigma quote a maximum magnification ratio of 1:3, and a minimum focusing distance of 20cm. The magnification ratio sounds about right, but it'll focus closer than 20cm - there have been occasions when I've had to remove the lens hood in order to focus at the closest ...
Posted by jps on 19/05/2008 - 12:21
New Lens??
Don't forget focus distance is measured from the sensor, not the front of the lens. Even so, this does sound as though it focuses within the specified range. :D Dan
Posted by Daniel Bridge on 19/05/2008 - 18:41
New Lens??
No, that is the Sigma 18-50 f/2.8 EX DC, just to avoid confusion! Blimey, my lens has lost 5mm! :D Perhaps I should take it back to the shop - I'm sure it was an 18-55 when I bought it!! Jonathan
Posted by jps on 21/05/2008 - 10:35
When is a Pentax not a Pentax?
another point, which occurs in other industries, notably cars. The new names have to have good QC wheras the old names can fall back on their reputation - not conciously maybe, but the standards could slip imperceptably and the fans would turn a blind eye to the odd bad report filtering through. B...
Posted by Darkmunk on 18/05/2008 - 09:06
When is a Pentax not a Pentax?
As you say in the modern global marketplace there is rarely a product that is stays loyal to its roots... Car parts come from all over the world Aircraft called Boeing & Airbus have parts manufactured all over the world The world marketplace is flooded by so called "designer ...
Posted by Pwynnej on 18/05/2008 - 10:11
When is a Pentax not a Pentax?
I've just had a call from the shop to say that Pentax have agreed to replace my 16-45. So although I reckon they broke it when they were adjusting it, implying that Pentax QC isn't what it's cracked up to be, the fact that I now have a shiny new lens suggests that they do indeed look after us and va...
Posted by Darkmunk on 20/05/2008 - 09:28
