Search results for 'back focus' - page 1594
Is 10 units of back focus unusual?
Lee, 'real world sharpness' where one might be shooting at, lets say 5.6, a reasonably fast shutter speed and focussed a bit from minimum shouldn't be giving you any cause for concern. Can I suggest you post a problematic image complete with EXIF data before doing anything drastic?
Posted by gartmore on 07/03/2011 - 20:57
Is 10 units of back focus unusual?
When I calibrated the AF of my Pentax lenses some time ago (with a K20D) I found it ideal to use a ruler at approx 45 degrees, to get exact focus on a point, I suggest this is better than three spaced items. Out of interest, all seven Pentax lenses needed correction, two of them by the max amount...
Posted by bretbysteve on 08/03/2011 - 11:36
Is 10 units of back focus unusual?
Did you adjust the lenses for one focal length and distance or for many focal lengths and distances? I would be concerned that if all my lenses were in need of adjustment then the testing procedure might be awry.
Posted by johnriley on 08/03/2011 - 11:42
Is 10 units of back focus unusual?
When I calibrated the AF of my Pentax lenses some time ago (with a K20D) I found it ideal to use a ruler at approx 45 degrees, to get exact focus on a point, I suggest this is better than three spaced items. Out of interest, all seven Pentax lenses needed correction, two of them by the max amount...
Posted by helios on 08/03/2011 - 13:56
Is 10 units of back focus unusual?
An impromptu test target that works well is a newspaper or map pinned to a wall. Make sure the camera is absolutely parallel to the wall Just to add that a good way to make sure all is lined up properly is to put a mirror in the centre of your newspaper 'target' and line up with the reflection of ...
Posted by lemmy on 11/03/2011 - 18:08
powerbridge ist ds
hi folks, i recently get my istds back of cleaning. is was pretty dusty. after >13.000 pics i think this is normal. but, that company told me also this kind of cam has a very sensitive powerbridge onboard. it seems this can (be) damage the powercells in it. only pentax can repair this. an...
Posted by jpgeerets on 05/03/2011 - 18:41
SDHC card compatibility for K20D
If it's an SDHC card, should be OK. Last firmware update was a while back before the SDXC standard cards were available. Class 6 cards should be more than adequate for a K20's needs (and ability to write to memory)
Posted by Steve Chasey on 06/03/2011 - 11:11
Some of you might have a chuckle...........
A good photographer should easily adapt :) My kits fine for shooting a wedding too A good photographer should intuitively know his equipment, that doesn't happen overnight. If someone changed my camera I'd have to keep reminding myself where certain setting are. EV Comp, Sensitivity, Bracketing, M...
Posted by Tyr on 07/03/2011 - 09:32
K-x review blasts K-5 (!?)
I remember that they reviewed a back-up drive and gave it top marks (after they had presumably used it for a few days in the office) and numerous people commented that they had totally ignored the very poor reliability record of that particular brand - something of an omission as reliability is the ...
Posted by Hyram on 07/03/2011 - 21:05
K-x review blasts K-5 (!?)
Although I am a real Pentax die hard, I think the interesting thing is the view that one camera brand is better and a lot of magazines seem to overlook the Pentax brand. Anyway, most or should i say all recent DSLR's regardless of brand will record a good image if the photographer behind the camera ...
Posted by Fletcher8 on 12/03/2011 - 08:01
K-R kit lens flare and ghosting
flares are back in now. in fact now i come to think of it a flare saved my life in a critical moment off the farnes.
Posted by geordie01 on 09/03/2011 - 00:03
K5 and all those digital filters and effects !
hard drives are cheap. Memory cards are cheap. Computers are plenty powerful. I have no reason to shoot jpegs, Aperture makes a raw workflow completely seamless. It is simply a moot point to waste time thinking about as far a I am concerned. It only really matters when you got a bad shot (saw one ...
Posted by MarkTaylor on 09/03/2011 - 21:05
K5 and all those digital filters and effects !
hard drives are cheap. Memory cards are cheap. Computers are plenty powerful. I have no reason to shoot jpegs, Aperture makes a raw workflow completely seamless. It is simply a moot point to waste time thinking about as far a I am concerned. It only really matters when you got a bad shot (saw one ...
Posted by Don on 09/03/2011 - 21:15
K5 and all those digital filters and effects !
..... Unless I'm missing some major point that's staring me in the face here, the only disadvantage to shooting RAW+ is you take up a little more space on your memory card. It's possible you might slow down camera performance a little bit too, but I doubt it's noticeable. Wildlife photographer Andy...
Posted by Crossed-up on 10/03/2011 - 00:07
K5 and all those digital filters and effects !
..... Unless I'm missing some major point that's staring me in the face here, the only disadvantage to shooting RAW+ is you take up a little more space on your memory card. It's possible you might slow down camera performance a little bit too, but I doubt it's noticeable. Wildlife photographer Andy...
Posted by Don on 10/03/2011 - 00:18
K5 and all those digital filters and effects !
..... Unless I'm missing some major point that's staring me in the face here, the only disadvantage to shooting RAW+ is you take up a little more space on your memory card. It's possible you might slow down camera performance a little bit too, but I doubt it's noticeable. Wildlife photographer Andy...
Posted by MarkTaylor on 10/03/2011 - 01:16
Green button
I have just traded in my Olympus e520 for the K-x with the dual lense kit at a very good price and am about to embark on a rejuvenated bout of snapping. One thing I have noticed very quickly - due to a number of spoilt shots either over or under exposed is that the K-x retains your last settings af...
Posted by westoelad on 09/03/2011 - 19:33
K5 Firmware V1.03 released
you beat me to the thread. :) Already installed here ... I've rattled off several initial test shots with 1.03 and so far I'm highly impressed. - There seems to be a little more hunting at EVs lower than EV2 than there were before and also results are a little intermittent, Occasionally it sti...
Posted by Smeggypants on 10/03/2011 - 02:12
K5 Firmware V1.03 released
OK, not so impressed now .... .... been doing a lot of tests ... I will say there is some improvement, but the AF performance on my K-5 is still way behind the K20D. I'll post pictures tomorrow sometimes as it's 3:30an here, but here's the test I just did .... K20D - Sigma 30/1.4 - exposure f...
Posted by Smeggypants on 10/03/2011 - 03:38
K5 Firmware V1.03 released
AFAIK, the K7 & K5 have colour temperature adjustment for the phase focus. For me the K20D would miss focus in low level tungsten light. The K7 seems absolutely fine. Might be worth bearing in mind that when doing your low-light tests. Try with both tungsten & halogen if possible, or even with d...
Posted by MattMatic on 10/03/2011 - 11:38
