Search results for 'sensor cleaning' - page 179
No more *ist-D??
Arthur, I wonder if you or anyone else can tell me why the *ist D is thought to be a “pro-level” camera and the DS and DL are considered as enthusiast level cameras? From all the reading I have done the DS and DL seem to have evolved and developed from Pentax’s first digital camera, the D. Yes, ...
Posted by Anonymous on 01/08/2005 - 19:33
Pentax *ist ds kit lens focal length?
Hello, I'm new to the digital slr world. I recently purchased a *ist ds kit. It included the Pentax smc 18-55mm F3.5-5.6 da lens. Since this lens is made for digital slr use, is it really 18-55mm focal length when used with the *ist ds camera? Or is that focal length multiplied by a factor of 1....
Posted by thr33 on 27/07/2005 - 22:35
Pentax *ist ds kit lens focal length?
Yes, but APS-C is not the only sensor size for digital cameras. There are a dozen sizes or more! G
Posted by George Lazarette on 28/07/2005 - 23:53
Full continuously variable Apeture priority with M lenses
Well, I tried testing the DOF preview in Av and M. It seems when the shutter fires, the apature closes down in any mode. But you are right, in Av the DOF preview doesn't stop down the lens whereas in M it does! I still can't figure out how I've been getting my correct exposures, since if the lens...
Posted by Arthur Dent on 07/08/2005 - 01:06
NEW Pentax *istDS owner in need of Advice
Hi Thea, I have been told you guys are the most helpful pentax users around. Yes, it's a very friendly forum here with lots of useful bits of information. Welcome aboard! :D ...can you use the 35mm MZ-50 lenses with the *istDS You certainly can :) Be aware, though, that since the *ist-DS sensor is...
Posted by MattMatic on 13/08/2005 - 06:45
DSLR and SLR lenses
Yes, this can be a bit of a problem - I love landscapes and using wide-angle lenses but this is where we lose out. A 28mm lens effectively becomes a 42mm lens, which in 35mm photography wouldn't really be considered wide-angle at all. The effective aperture is also reduced - great for Depth of Fiel...
Posted by Kimbo on 16/08/2005 - 16:25
DSLR and SLR lenses
The effective aperture is also reduced - great for Depth of Field but not so good for low light situations. Sorry, this isn't correct. You don't multiply your aperture at all. A 50mm f1.7 is still f1.7, and behaves like it. Because of the focal length multiplier you may consider that the DoF chan...
Posted by MattMatic on 16/08/2005 - 17:23
DSLR and SLR lenses
Simon, Yes, you're right. The *ist-D/DS/DL have a "multiplier" of 1.5. All other makes of DSLR have between 1.3 and 1.6x multiplier. The only exception is the Canon 1Ds which has a full frame sensor - and the price to match it :P I did a diagram waaay back that you might find useful in visualis...
Posted by MattMatic on 17/08/2005 - 23:09
DSLR and SLR lenses
Dear George, Once again, you’re just assuming certain things have happened. The salesperson did not mention anything about the size of the sensor. What he did mention was something about the actual fitting of the lens to the camera which did not make sense. If you have anything more to say wha...
Posted by simonsteph on 20/08/2005 - 17:09
UV filters on Digital *istDs
The filter shouldn't degrade the image on a digital sensor any more than it does on film. Personally, I try to avoid the use of filters unless I actually need them. I know they help to protect the lens, but they inevitably interfere with the light path, and I would prefer to take care and risk d...
Posted by George Lazarette on 30/08/2005 - 16:06
UV filters on Digital *istDs
I make my comments from the perspective of a film camera user, as I'm still waiting for the right digital camera (Pentax, of course) I leave a filter on all my lenses (generally a skylight), which means that when handling the lenses, if I get finger marks on the front, then I only have to clean t...
Posted by Taliety on 06/09/2005 - 22:43
UV filters on Digital *istDs
Hi, I have to put my hand up to being in the camp that uses filters most of the time. However, I do make sure that they are good quality. Over 25 years or so, I have managed to dent the thread in 5 filters which, bearing in mind most of my lenses are the older metal bodied ones, would have meant de...
Posted by Kim C on 07/09/2005 - 15:59
Digital lens converter?
Perhaps a dumb question, but since 1.4x, 2x and even 3x conveters are used for increasing the focal length of lenses, isn't it possible to make a 0.6 times converter, to adapt film lenses to the same focal length equivalent for digital cameras? Whilst they're at it, they could also coat the rear ele...
Posted by Taliety on 06/09/2005 - 23:00
Green dot: dust or faulty CCD?
Thanks for the reply malcolmk. I've never had dust on my *istDS yet (touch wood), but found it hard to believe that this is how dust looks. Found Pentax's reply to follow their cleaning procecure in the manual (blow air onto mirror / CCD) an odd suggestion for fixing this. Guess the camera has ...
Posted by Slothy on 29/09/2005 - 19:47
Pentax/Samsung tie-up
Yes, but what size is the sensor? Most non-DSLR digital cameras use tiny little sensors. Lots of noise, usless at higher ISO's.
Posted by Arthur Dent on 06/11/2005 - 00:31
Pentax *istds or *istds2?
If you like Pentax cameras and already have Pentax lenses, I would suggest that is a powerful incentive to buy the Pentax. The Olympus has its enthusiasts, but I'm not personally convinced that the 4/3 system with its very tiny sensor is the sensible way to go. Smaller sensors inevitably mean mor...
Posted by johnriley on 17/10/2005 - 07:58
Is it worth waiting?
I have Super A, 50mm f1.7 A, 28mm M, and 100mm M f4 macro. I love this set-up. Until recently I was adamant that being a student I could produce high quality shots with these primes and film without too much cost (the 28mm was £30 bought from dealer not even ebay 2 yrs ago-considering the numb...
Posted by Anonymous on 18/10/2005 - 21:45
Sensor Cleaning
G'day All. I've just bought a *ist Ds. I've been using it for the last week or so. In the manual it mentions cleaning the sensor. My question is this: How do you know when the sensor needs cleaning? Also, How do you clean the sensor? Is there a cleaning fluid or lens pen type of gadget? a...
Posted by glock40sw on 19/10/2005 - 08:54
Sensor Cleaning
Hi Trevor, You will find the sensor needs cleaning when you have black specks/ small splodges on the pictures that aren't there in the original scene! Taking a photo of a plain sky will show up the dust (I have found whether its blue or cloudy!). If you see only one, maybe 2 spots, it's probably ...
Posted by alfpics on 19/10/2005 - 14:03
Sensor Cleaning
Take a look at my blog at http://flink.formula9.net where you can see my experience in cleaning my sensor with a sintetic brush. It is rather simple if you take some care (and don't do my mistakes!). Then again, I had no stuck dust, so you might actually need some moist method like the CopperHill...
Posted by Flink on 19/10/2005 - 22:04
