Search results for 'sensor cleaning' - page 368
From a K10 to a KR ?
Yes I have part ex my K10 for a new Kr but wished I had not to be very honest. How come? Morning John Im just not happy with the IQ of this camera as stated in another post. I have tried your recomendations re the tripod and sharpening in camera but still the IQ doesnt do it for me. May be its me ...
Posted by philstaff on 14/02/2011 - 11:19
From a K10 to a KR ?
Yes I have part ex my K10 for a new Kr but wished I had not to be very honest. How come? Im just not happy with the IQ of this camera as stated in another post. I have tried your recomendations re the tripod and sharpening in camera but still the IQ doesnt do it for me. May be its me or a differen...
Posted by Mike-P on 14/02/2011 - 14:39
Advice please
My advice: Try using Av mode with manual ISO. Set ISO to 800 or 1600 as a starting point and the largest aperture (smallest number) the lens will support, and see what shutter speed you get. With a 200mm lens you really need to get it up around the 1/250 mark to avoid shake and freeze action fair...
Posted by Dangermouse on 07/02/2011 - 16:07
Spare battery
It's interesting, but human nature, that when a test is presented the reaction is to reject it as flawed because it doesn't reinforce what we want to be true. That's a basic problem with science at all levels. Add funding issues and yet more pressures are added to the mix. What happens when experime...
Posted by SmutjeUK on 21/02/2011 - 14:52
K-5 - How accurate can I expect the focussing to be?
Yesterday I ordered a K-5. It arrived today, so after charging the battery I tried a few things just to get a feel for the camera. Mostly they've filled me with confidence, or even exhilaration, compared to the GX10. However, one gripe with the GX10 was that the focus screen was never quite in ...
Posted by karma mechanic on 25/02/2011 - 23:52
K-5 - How accurate can I expect the focussing to be?
Hi there :) 1] have you calibrated the AF for your lenses yet? 2] The K-5 has a fault with front focussing in low light using the phase ( regular AF ) while the contrast focus through the sensor ( live view is accurate ) 3] Focus screens can't display a DOF thinner than that from arou...
Posted by Smeggypants on 26/02/2011 - 00:47
K-5 - How accurate can I expect the focussing to be?
Thanks for the reply! The shots above were in bright window light. I've now calibrated three lenses by first using Live View with full magnification and manual focus, then marking the focus ring, and then making menu adjustments until the AF turned the ring to the exact same mark (all on a sturd...
Posted by karma mechanic on 26/02/2011 - 14:15
K-5 - How accurate can I expect the focussing to be?
[quote:3496ace15f="karma mechanic"] The beep and red square in the viewfinder do not indicate correct focus. They indicate only that a focus point has been selected. The one and only electronic indication that a lens is correctly focussed on the selected focus point is the green hexagon in the b...
Posted by karma mechanic on 26/02/2011 - 15:02
K-5 - How accurate can I expect the focussing to be?
It is the manual focussing that I want to improve since the clearly-defined focus zone on the ground-glass isn't precisely where the actual sensor image is sharp. That is something findamentally out of adjustment. If the distance from lens to ground glass and from lens to sensor is not the same then...
Posted by johnriley on 26/02/2011 - 16:18
K-5 - How accurate can I expect the focussing to be?
Regarding the margin of error, taking the lines of text as an example it is easy to focus on a single line on the ground glass. Getting a different line in the final image is a bit disconcerting :) The lens to ground glass distance does need to be exactly the same as the lens to sensor distance ...
Posted by karma mechanic on 26/02/2011 - 20:56
K-5 - How accurate can I expect the focussing to be?
Yesterday I ordered a K-5. It arrived today, so after charging the battery I tried a few things just to get a feel for the camera. Mostly they've filled me with confidence, or even exhilaration, compared to the GX10. However, one gripe with the GX10 was that the focus screen was never quite in ...
Posted by awaldram on 04/03/2011 - 11:45
K-5 - How accurate can I expect the focussing to be?
Using AF.C and tracking the red square over objects it appears that the area covered by the AF sensor is much bigger than the red square, so that's one misapprehension cleared up. It appears to be a little smaller than the area inside the central curved marks on the screen. Regarding focus shift,...
Posted by karma mechanic on 04/03/2011 - 15:14
K-5 - How accurate can I expect the focussing to be?
Regarding focus shift, the picture of the camera dial and the later ones of the text were taken wide open, so no shift on stopping down. Sorry might not have been fully clear it's spherical aberration that can cause it Here is a lens. Wide open the best point of focus is at point B since the ...
Posted by Anvh on 04/03/2011 - 16:44
K-5 - How accurate can I expect the focussing to be?
Yup contrast focus is more accurate but it's also a lot slower. Faults like the current low light front focus on the K-5 aside I've always found phase AF to be good enough though. In real critical situations I've always gone into live view and manually focussed. Although that relies upon exactly sa...
Posted by Smeggypants on 04/03/2011 - 20:48
K-5 - How accurate can I expect the focussing to be?
Actually I made a silly mistake, live view doesn't rely upon "exactly same optical distance between subject and sensor and subject and focussing screen" Dunno why I said that. My point about Live view, which I should have mentioned as it's the important point .... is that you can magnify it....
Posted by Smeggypants on 04/03/2011 - 21:19
K-5 - hand-held IR pictures at last?
Peter - their website says they will (only the istD) but when you talk to them they won't... I tried to get K100DS converted by them (and argued that the sensor was pretty much the same as the ist they claim to be happy to convert) but they refused to contemplate it. In conversation, they tol...
Posted by JonSchick on 28/02/2011 - 19:44
K-5 - hand-held IR pictures at last?
In conversation, they told me that Pentax cameras are rebranded Samsungs ... Odd then that Pentax are continuing to produce new K mount bodies, but Samsung aren't. Do they really think that Samsung make cameras for Pentax :roll:. Sad indeed, I was contemplating having my *istD converted to IR ...
Posted by Mannesty on 28/02/2011 - 22:18
What makes an image?
Pentax K7, Pentax 50mm, RAW, Silkypix. Pentax K7, Sigma 30mm, RAW, Lightroom. Pentax K7, Pentax 50mm, JPG. Pentax K7, Sigma 30mm, JPG In all cases above we have a third party sensor. With the Pentax lens, we have a direct input from Pentax as to IQ. Shooting RAW and assuming a “non-p...
Posted by K10D on 28/02/2011 - 23:47
What makes an image?
The third party sensor part isn't new - before digital came along the "sensor" would have been Kodak, Fuji, Agfa, Ilford or even Boots the chemist. The body does play some part as it's responsible for the ergonomics - if it gets that wrong you might not get the shot you wanted, or get a shot that...
Posted by hefty1 on 01/03/2011 - 00:22
What makes an image?
The camera contributes the AF system (unless you use manual focus) and metering system. In the case of Pentax it also contributions Shake Reduction. All three can make a direct contribution to the quality of your image, to a greater or lesser extent depending on the circumstances. Additionally th...
Posted by K10D on 01/03/2011 - 09:27
