Search results for 'sensor cleaning' - page 272
k10 d multi exposure question re ghosting images
It can be done that way, but you always get some light that "leaks" into the covered part of the lens/sensor, doing some softer pictures. Easier in post. I generally try to get it right in camera, but this is one case where you want to get it right in post.
Posted by pentaxian450 on 29/08/2009 - 23:13
K10 focus check
There's definitely variability in the equipment and in the process (tripod position, distance, ambient temperature, dust in the lens mount, etc.). It is important to switch the SR to off when on a tripod (now I'm not suggesting for one minute...:oops:) - I wonder if this could affect the result...
Posted by El Dingo on 02/09/2009 - 13:40
K10 focus check
There's definitely variability in the equipment and in the process (tripod position, distance, ambient temperature, dust in the lens mount, etc.). Not sure what you're getting at with this point, sorry. It is important to switch the SR to off when on a tripod (now I'm not suggesting for one m...
Posted by ChrisA on 02/09/2009 - 14:06
K10 focus check
When you focus manually you focus until the image is at its sharpest on the ground glass. The distance from the ground glass and from the sensor have to be the same and fixed, otherwise all shots would be off. Therefore I'd suppose that the change being made is to the AF calibration so that its f...
Posted by johnriley on 02/09/2009 - 19:00
K10 focus check
When you focus manually you focus until the image is at its sharpest on the ground glass. The distance from the ground glass and from the sensor have to be the same and fixed, otherwise all shots would be off. Therefore I'd suppose that the change being made is to the AF calibration so that its f...
Posted by stevejcoe on 03/09/2009 - 09:25
K10 focus check
There's definitely variability in the equipment and in the process (tripod position, distance, ambient temperature, dust in the lens mount, etc.). Not sure what you're getting at with this point, sorry. It is important to switch the SR to off when on a tripod (now I'm not suggesting for one m...
Posted by El Dingo on 03/09/2009 - 10:51
K20 high-ISO magenta tinge removal tool
Well, it's related to the sensor reading method, so it's not linked to any settings (apart from ISO, of course!). As I understand it, it is in fact present at every sensibility, but more or less exacerbated by the gain applied to the signal. So it will be present right from 100 iso, but in neglig...
Posted by dlacouture on 01/09/2009 - 06:59
K20D Help
Have to strongly disagree there. A dead pixel is a manufacturing defect pure and simple. The Sale of Goods act 1974 covers this. Just because a certain amount of dead pixels are deemed OK by a manufacturer does not mean they should be accepted by you. I can see that working with a display but wi...
Posted by GlynM on 05/09/2009 - 10:00
K20D Help
Ah okay Richard. I'm not sure but I believe you have the same warranty as with TFT screens so 3 out of a 1000 or something like that are allowed to be faulty. If they would be below that value and can do a dark frame then you they must replace the sensor.
Posted by Anvh on 06/09/2009 - 11:40
K20D Help
With 14.6 million photosites I would guess that the potential is there for the odd one to misfire once in a while. I suppose the question is whether or not it is currently possible to make a totally fault free sensor with the technology we have. I don't know the answer to that, but I suspect ther...
Posted by johnriley on 06/09/2009 - 11:50
K20D Help
I think that if sensor and screen manufacturers were obliged to replace every unit that had one bad pixel, the cost would rise considerably. So it's in the interests of all to have a little give and take. G
Posted by George Lazarette on 06/09/2009 - 13:11
K20D Help
I'm not concerned whether pixel mapping fixes the problem or not its a good idea, my argument is that surely it'a an warranty issue if you have a hot pixels problem when the camera is under warranty. Richard, I doubt that any of our D-SLRS are hot pixel-less (is that a word :oops:) we are talking ab...
Posted by Greytop on 06/09/2009 - 21:18
K20D Help
It's another variant on the old 80:20 rule. It'll cost 80% more to effect a 20% improvement. Or, in reality, perhaps a 25% higher price for a pixel-perfect sensor. I know which I'm in favour of. G
Posted by George Lazarette on 06/09/2009 - 22:14
Who has, will have a K-7?
I am actually quite tempted by the new Canon 7D, if the 18mp sensor is any good at high ISO I can see my self having a good hard look .. mainly for the MP-e 65 macro lens as no one else does anything remotely like it. If that were to happen (a big IF) then I would still keep my K10D and Sigma len...
Posted by Mike-P on 04/09/2009 - 15:06
Who has, will have a K-7?
I am actually quite tempted by the new Canon 7D, if the 18mp sensor is any good at high ISO I can see my self having a good hard look .. mainly for the MP-e 65 macro lens as no one else does anything remotely like it. If that were to happen (a big IF) then I would still keep my K10D and Sigma len...
Posted by Pwynnej on 04/09/2009 - 15:57
Who has, will have a K-7?
I am actually quite tempted by the new Canon 7D, if the 18mp sensor is any good at high ISO I can see my self having a good hard look .. mainly for the MP-e 65 macro lens as no one else does anything remotely like it. If that were to happen (a big IF) then I would still keep my K10D and Sigma len...
Posted by Mannesty on 04/09/2009 - 16:12
Who has, will have a K-7?
Isn't that exactly what the manufacturers do though, tempt us. I have been tempted ever since I saw the MP-e 65. Have even thought of buying something like a 20/30D just for that lens but imagine it with a 18mp crop sensor :shock: Ouch, the price kills it..... Well you did say you would pref...
Posted by Mike-P on 04/09/2009 - 17:12
Who has, will have a K-7?
I purchsed mine back in July and for my main type of photography which is aviation it was a step up from the K20 (the other half uses one now) but not quite the leap I thought it would be in terms of FPS. Having said that it is quicker than the K20 and I have got some images which I might not have ...
Posted by RobE17 on 05/09/2009 - 09:15
Who has, will have a K-7?
But at the moment it is back at Pentax UK courtesy of SRS with a damaged sensor. I used it for a week in August with no problems and a couple of weeks ago noticed some "dust spots" on my images at the same place with different lenses. I took it back to SRS and they confirmed it was damaged so they...
Posted by Mike-P on 05/09/2009 - 11:05
Who has, will have a K-7?
The shutter is closed and the sensor covered when changing lenses, so damage at that point does seem rather unlikely.
Posted by johnriley on 05/09/2009 - 12:11
