Search results for 'back focus' - page 1493
New K7 and my K10 bounces and lives
I think that -10 has worked ... it has certainly improved it!! Thanks. When you say manually focus it, does that make any difference? Because the AF looks correct in the view finder and isn't - surely manually focusing will be the same misleading image?? That's right, but you can make a manual co...
Posted by iceblinker on 02/01/2010 - 12:23
New K7 and my K10 bounces and lives
If the image looks shapr in the viewfinder and isn't on the sensor, then something is physically out of alignment. The mirror could be displaced or the focusing screen not seated correctly. If all is well, the manual focus image will be sharp and the viewfinder image will be sharp at the same time. ...
Posted by iceblinker on 02/01/2010 - 12:29
New K7 and my K10 bounces and lives
Given that we never had this opportunity to test AF in the film days, not without going to considerable trouble, and given that there will have to be a compromise AF setting as individual lenses will have different tolerances, do you think we are over-checking and over-correcting these days? Perf...
Posted by johnriley on 02/01/2010 - 12:35
New K7 and my K10 bounces and lives
Yes I think some DSLR users are overly obsessive about focus charts and minor AF tweaks, but we're talking about a MAJOR problem with the Tamron 17-50mm. The error I and Bluewhistle2 are experiencing is enough to make an image very soft at f2.8 and even not right at f4. John, try dialing a +10 ad...
Posted by iceblinker on 02/01/2010 - 12:48
multiple exposure feature uses??
...is it psibble to get a solid image multiples? All items that remain in the same position in *all* the frames will remain solid - everything else will appear "ghost-like" to one degree or another. In addition to the tips Prieni an RaV give above, here's one I got from Don a couple of years back...
Posted by hefty1 on 04/01/2010 - 14:33
multiple exposure feature uses??
Thank you every one for the information, It would appear tht I will have to learn to step out of the box and try to be a bit creative to use this fature. I must say that there is no use otherwise than art or creativity for this action surprises me or rather it surprises me that Pentax put it there...
Posted by adwb on 06/01/2010 - 10:54
Are DSLR's calibrated for exposure against a standard?
The picture you linked to was taken in mode and looks like it was underexposed and then pushed in PP to bring the levels back up. If you shoot manually you only tend to use the meter as a rough guide - he's picked his actual settings himself so you can't draw any conclusions I'm afraid.
Posted by hefty1 on 04/01/2010 - 20:43
Debug mode on K20D - works nicely
There's also a good documentation out for using the K-x debug mode. (Haven't yet tried it myself though...) I know this might be different from the K20D, BUT in this documentation http://deejjjaaaa.blogspot.com/2009/12/pentax-kx-debug-menu-to-do-focus.html I would highly recommend to read poin...
Posted by Wolfson on 04/01/2010 - 23:22
Debug mode on K20D - works nicely
So, if you try this at home, better make sure to document all subsequent changes to the AF adjustment ;-) Thanks for this link - he actually used a different command than I did, though the end result is the same. I will have to try his way, to see if it works on K20D, as it looks slightly better. ...
Posted by andymcm on 04/01/2010 - 23:29
Debug mode on K20D - works nicely
Once the global adjustment has been applied via the debug method, does this effectively alter the start point for any subsequent individual adjustments? ie If I use debug to set the camera to -20 will I then be able to individually adjust lenses in the range -10 to -30, ie +/- 10 either side o...
Posted by andymcm on 06/01/2010 - 11:04
Debug mode on K20D - works nicely
I don't like test charts either, they have always given me misleading results. I setup using a near infinity subject like a car number plate and working in 5 unit steps from -10 to +10, I review the results and work around the best in 1 unit steps. I always recheck the AF from both directions to...
Posted by RichardDay on 06/01/2010 - 12:38
Debug mode on K20D - works nicely
Unfortunately when I went to confirm this behaviour this morning, I found that the focus on my FA 50mm 1.4 was wrong again. So I reset everything back to defaults, in the debug menu and the standard menu, and now it's focussing correctly at the defaults. This doesn't make any sense to me. I'll ne...
Posted by andymcm on 07/01/2010 - 11:16
Debug mode on K20D - works nicely
You don't have to do that, just use the Quick Shift to make a final tweak to the focus point. I can't help but think that it would be madness to recalibrate the AF every time you went from daylight to tungsten. Whatever would happen if you were in a situation where you were using both types of li...
Posted by johnriley on 07/01/2010 - 11:22
Debug mode on K20D - works nicely
True. Manual focus in those circumstances I think. AF is not suitable in all circumstances.
Posted by johnriley on 07/01/2010 - 12:01
Debug mode on K20D - works nicely
I calibrate mine in natural light, at a focus distance of about 2-3 metres, as thats the distance I am from a model in a studio, where you do need critical sharpness on the eyes. It doesn't bother me if the focus is slightly out at longer distances as I am unlikely to be shooting wide open.
Posted by timbo on 07/01/2010 - 12:42
Debug mode on K20D - works nicely
Is there a debug mode for the K-7? Yes there is. The basic procedure for all models is here: http://www.pentax-hack.info/documents/debug.html There's enough info there to try it out, but I'll look at putting together some (K20D-specific) AF-adjustment instructions over the next day or two. Ju...
Posted by co049 on 27/12/2021 - 17:57
HELP!! Sudden noise problem with Kx
You are probably having a joke with us and the massive noise is in fact blowing snow. If however, it is not blowing snow, then I would suggest that your photo may be well underexposed. This underexposure could be causing the noise. Back in the days of film photography, we used to give 1 1/2 to 2 ...
Posted by grahamwalton on 06/01/2010 - 15:41
HELP!! Sudden noise problem with Kx
Hm, I think the camera has repaired itself miraculously :-) . Sorry if my joking wasn't obvious... I should have added some winks ;-) But seriously... since I only have a lowly K-x, it falls upon all you K20D and K7 owners with your posh weather seals to go out and shoot in the snowstorms. It's y...
Posted by Wolfson on 06/01/2010 - 15:52
K20d - freezing
Hi Lynton, Just saw your post tonight, Glyn posted a link to my original posting. Guess what...? It happened again, just a couple of days ago, taking pics out in the freezing snow and got a white screen, nothing happening, just switched off and back on... No problems. I've just lived with i...
Posted by alig on 08/01/2010 - 01:31
K20d - freezing
Well it's gone back to warehouse express for pentax to fix.
Posted by Lynton on 10/01/2010 - 14:49
