Search results for 'back focus' - page 1471
Pentax Focusing
I hired the Pentax 300mm last week. I was generally pleased with some of the football pics I took, compared to the 50-200 I have. I was really disappointed in the AF. It seemet to go in the opposite direction most of the time, then stop and focus the lens till it eventuall stopped. A few times, I wa...
Posted by pentaxian67 on 17/09/2009 - 15:48
Pentax Focusing
Sorry to take so long coming back to you, but there are a number of possibilities. You're fairly new here, and I don't know how experienced you are. Please don't be offended if I state the obvious. Points to consider. 1 Are you using SDM for the 300mm lens? It requires updated firmware ve...
Posted by George Lazarette on 17/09/2009 - 22:13
hotpixel
Hard to say really - it could be fixed under warranty but against that would be the delay whilst it was away. I would try resting the CCD by removing the battery and then after 30 minutes or so booting the camera back up and trying again at a lowish ISO, such as 100 or 200. Maybe it will stop mis...
Posted by johnriley on 18/09/2009 - 11:30
K20D AF Adjustment
I have had one or two problems with AF (intermittent), mainly with wide apertures (ie F2.8 or wider) where the AF of the K20D is out. It mainly focuses on an area behind the point I want to focus on. Now I have found this AF adjustment in the menus of the K20D. Has anyone used it? What are the b...
Posted by Offertonhatter on 19/09/2009 - 23:50
K20D AF Adjustment
Have a look here
Posted by bforbes on 19/09/2009 - 23:57
K20D AF Adjustment
Try here for the K10
Posted by bforbes on 20/09/2009 - 00:12
K20D AF Adjustment
Actually, if you tend to rely on the focus indicator when using manual focus then this could have some merit !
Posted by RR on 20/09/2009 - 12:26
K20D AF Adjustment
I am not a fan of using these focus test charts where the camera is focussing on a target that is at an angle to the focus plane. I am never confident just where the camera actually focussed. Instead, with a camera that offers a live view function, I have used the technique that relies on moire i...
Posted by mera on 20/09/2009 - 17:12
K20D AF Adjustment
I note in this article that Canon recommend making any adjustments at the long end of the zoom range. The following web site describes one way of doing this (it's for a Canon, but the principles will apply to a Pentax K20D): http://www.northlight-images.co.uk/article_pages/cameras/1ds3_af_micoad...
Posted by JohnX on 20/09/2009 - 17:38
K20D AF Adjustment
Zoom lenses may not have an accurate point of focus anyway. Most modern zooms are parfocals, where after zooming the focus point will change. So the old advice of focusing at the long end and then zooming out is not very good. Zooms are such a compromise that it would be difficult to now where...
Posted by johnriley on 20/09/2009 - 18:29
K7 Focus Issues
Hello I am new to this forum. I have recently purchased a K7 and I am having issues with the amount of focus correction required on all my lenses (16-50, 60-250, 35, 55). All lenses require large front focus compensation with at least one lens that does not seem to be correctable (60-250) requiri...
Posted by benzp on 22/09/2009 - 10:12
K7 Focus Issues
make sure you are doing your testing/calibration in natural light.
Posted by pschlute on 22/09/2009 - 11:21
K7 Focus Issues
Doesn't the K7 have a second sensor to overcome front focusing in non-natural lighting? Not sure how well this works though?
Posted by benzp on 22/09/2009 - 15:33
K7 Focus Issues
Forgive me if I'm teaching granny to suck eggs but make sure the AF is set to central point or selectable or whatever it is on a K7. Don't let the camera try and work out where the AF point is. Mike
Posted by mikew on 22/09/2009 - 15:58
Pentax KM/KX - Bulb Mode Practicalities...
back up a minute, the K-M can't use a wired remote????
Posted by Mongoose on 22/09/2009 - 17:06
K100D Flash !?
A K10D is what I'm after (if and when I can afford it) as it has some of the better features found on my old *ist D, namely 'Exposure' selection from dial (not menu) and 'Hyper' mode, which I quite liked. It also had coninuous focus by switch, another nice touch. In the mean time I'm trying to ...
Posted by stu49 on 23/09/2009 - 19:12
life span of a DSLR
Paul, don't give up on the K20, unless you realy want the latest camera as you could probably pick up a bargan when it's replacement is launched. I will certainly NOT give up on the K20d,I wanted one of those for a long time, plus what would I do with all these lenses I have, some on here mention th...
Posted by Paulm0bsw on 29/09/2009 - 19:07
life span of a DSLR
Paul, don't give up on the K20, unless you realy want the latest camera as you could probably pick up a bargan when it's replacement is launched. I will certainly NOT give up on the K20d,I wanted one of those for a long time, plus what would I do with all these lenses I have, some on here mention th...
Posted by PeteL on 29/09/2009 - 21:32
life span of a DSLR
I bought a New car only last year, and the mechanic told me that once I'd driven from the front of the garage to the back, some twenty yards I'd lost minimum Of £1500, as it was now second hand. But after that, the depreciation will be much lower. If you MUST buy a new car (which makes no economic ...
Posted by George Lazarette on 02/10/2009 - 08:56
life span of a DSLR
cheers Pentax I'm clinbing of the merry go round. Your decision negates your statement in your sig, "It's not the body, it's the lens". As you've invested in a number of half decent lenses, changing brands just doesn't make sense. If you think Pentax is a merry-go-round, your head will be spin...
Posted by Mannesty on 02/10/2009 - 09:49
