Search results for 'back focus' - page 1514
Shim replacement works on K-7!
Hi all. For those that followed my thread regarding the Katz Eye focus screen and the issue of the shim, I have received my set of shims and am happy to report that the shim replacement seems to have worked correctly. I have only done preliminary testing, but a .20mm shim seems to be about right...
Posted by Lance B on 29/03/2010 - 08:37
K-7 Green mode, ISO question
in p mode i have the back wheel set for apature adjustment and front wheel for shutter speed, if you change one and want to cancal it back to auto press the green button, also you adjust the iso manualy and want it set back to auto iso you can press the green button
Posted by pentaxanne on 02/04/2010 - 21:53
K100D focus screen change
Hi, I have found a few threads about focus screen changes, shims, front/back focussing etc. I have just cut down a P30 screen and fitted it into my K100D. Focus with the screen is slightly off against the confirmation beep/green icon. It is very slight and outside I can just get the two to coi...
Posted by Ancly on 04/04/2010 - 19:43
K100D focus screen change
I have seen the recent debug mode thread, and seen how to do it on my K100d. When I get to the menu there is no AF adjust present. Is this the firmware?..do I need to update it or am I missing something. When I go into debug mode the first screen shows Ver 1.0 Thanks Andy
Posted by Ancly on 06/04/2010 - 17:39
K100D focus screen change
Andy I believe you need a Russian hack to get the Debug menu working but I could be wrong.
Posted by Anvh on 06/04/2010 - 18:09
K100D focus screen change
Are you certain that a P30 screen is the same thickness as a current one? If it thinner then it would require shims to sit in the correct position.
Posted by gartmore on 06/04/2010 - 19:26
K100D focus screen change
Stefan, thanks, I will have a google.. Ken, thanks also, I will look out my micrometer. They are 'visually' the same thickness. Andy
Posted by Ancly on 07/04/2010 - 15:52
K100D focus screen change
Are you certain that a P30 screen is the same thickness as a current one? If it thinner then it would require shims to sit in the correct position. I have never understood why the thickness of the focusing screen has any effect on the focusing accuracy. As I understand it the focused image i...
Posted by gregmoll on 07/04/2010 - 16:54
K100D focus screen change
If the screen is thinner it wont sit against the prism, it will be lower.
Posted by gartmore on 07/04/2010 - 18:17
K100D focus screen change
Hi Ken, I'm afraid I do not understand, the frosted top surface of the screen is forced up against the base of the prism by the carrier frame, if the surfaces touch or are separated by the spacer how can the thickness prevent it "sitting against the prism" even if the screen was 5mm thick the top...
Posted by gregmoll on 07/04/2010 - 18:48
K100D focus screen change
Ken, the P30 screen is 5 thousandths of an inch thinner, which may or may not make any difference. Can't find any 'post it' notes anywhere to measure one of them, but anyway, as it seems better with the focus screen than the beep...I'll carry on experimenting. Anyway, as my focussing with the P30...
Posted by Ancly on 07/04/2010 - 21:05
K100D not working
My Pentax K100D has suddenly stopped working. It hasn't been bumped or dropped or anything. A few days ago I was still taking pictures, and then a day or two later when I tried it, it wouldn't work. When you press the shutter release button, nothing happens. No autofocus, no picture is taken, nothin...
Posted by ErrolC on 04/04/2010 - 20:25
K100D not working
I would also suggest trying a new set of batteries. I have a KM Z2 bridge camera that was bought to suppliment my film SLR and to see if I could "get on with" digital. It to exhibited the same symptoms - I even took it back to Jessops from whence it came and was advised to replace it - which I...
Posted by ManixZero on 05/04/2010 - 00:16
K100D not working
Hi again Hefty Once again, many thanks for your interest and suggestions. Unfortunately, I've had no luck though. I left the batteries out well over an hour, but when I put them back (tried some rechargeable ones too) the result was the same. By the way (as I mentioned in the lens section too) tha...
Posted by ErrolC on 05/04/2010 - 11:23
K100D not working
Ok, time for some daft suggestions, I don't have a K100D, but what about :- Is the MF/AFS/C lever in between positions ? Try setting to Manual Focus and see if works ? Take the Lens off and try to take a shot ? If the Lens has an " A " setting is this set correctly ? Try another Lens if y...
Posted by Chrism8 on 05/04/2010 - 11:47
K100D not working
Given that it's not working and nothing seems to fix it have you tried a wee tap? This is my port of last resort when something doesn't work as it should. A wee tap. It will either break it entirely (well it doesn't work now) or if I'm really lucky knock things back into place. It is a last resor...
Posted by mikew on 05/04/2010 - 12:36
K100D not working
Hi Errol, The K100D is about 2 years older than the K20D and its features are so much better. Its sensor is CMOS compared to the K100D's CCD. THe K20D runs on a lithium battery and it can last for almost 1500 frames on my usage (without flash). Price wise I am no help as I am from Singapore ...
Posted by felix on 27/04/2010 - 09:36
K100D not working
Hi Felix Thanks for the information. I have looked at some prices, but unfortunately it looks as if the K20D is going to be a bit of a costly option for my present requirements - if one could even get it, that is! Because basically all I need is a relatively inexpensive back-up camera until such ...
Posted by ErrolC on 27/04/2010 - 19:04
A couple of questions
On your second question, I have a kenko 2x teleconverter, which notionally retains autofocus (screw type rather than SDM), although to be honest I haven't used it a huge amount so far... the teleconverter costs a couple of stops so unless you have really good light, the viewfinder is very dark and t...
Posted by matwhittington on 05/04/2010 - 17:35
Sensor noise?
To be serious though, You really need to take a correctly exposed image of a subject and assess the noise from that. My normal Night shots are taken at 100 ISO and beginning around 30 minutes after sunset using around 20 seconds at F18 and usually continuing until i can no longer see any light in th...
Posted by PeteL on 08/04/2010 - 20:07
