Search results for 'sensor cleaning' - page 629
K70 aperture block
Hi My K-70 started to show the dreaded dark image problem exactly 3years to the day after I purchased it. I have sent it off to John Pye Technical and here is the estimated repair work needed to get it back. Fault Comments: Dark images Resolution Comments: Repair Shutter Mechanism Check an...
Posted by luckylu on 18/11/2021 - 20:56
Astrotracer Effectiveness?
Hi All Just a quick query from me, I was out the other night with my K-1, using the Astrotracer functionality for night shots. Exposures were between 30 and 50 seconds, on a sturdy tripod. I took one shot without the Astrotracer and one shot with it, for each composition. When reviewing the im...
Posted by davidstorm on 16/08/2021 - 10:48
Astrotracer Effectiveness?
Before anyone asks, the precise calibration was successfully completed before taking the shots and my camera has no fault with the sensor shake reduction mechanism. I take the shake reduction was turned off given the use of a tripod?
Posted by JAK on 16/08/2021 - 15:13
Astrotracer Effectiveness?
I think SR is automatically turned off, I've never actively changed the setting when doing astro. As I understand it, the astrotracer makes use of the SR gismo to move the sensor gradually to eliminate star trails. Switching SR off might therefore cause the camera to behave as if there were no ast...
Posted by kea828 on 16/08/2021 - 22:31
K-3iii: manual focussing using OVF
It could be that the mirror or the focus screen are out of alignment, or your dioptre adjustment technique is flawed. Get a sharp image in the viewfinder then switch to LV zoomed 100%. If they do not match then you know it is one on the three former problems. Like you I've struggled to get the di...
Posted by pschlute on 04/03/2022 - 20:38
Stiff on/off switch
Contact cleaner should be fine, I wouldn't use any lubricant though. +1 Lubricant may attract dust and cause more long term problems. Contact cleaner used sparingly may help but I suggest removing the battery first. If it's possible to dismantle the switch to effect a cleaning job that would be m...
Posted by Defragged on 29/07/2022 - 18:59
K5 iis - Diopter Adjustment Lever Missing
Since the viewfinder eyepiece/diopter adjustment mechanism is above the focusing screen, the chance of dust creeping down all the way to the sensor and AF sensor is rather slim. On the other hand, I'd be worried about moisture and condensation building up in the viewfinder if you use the camera in...
Posted by pentaxian450 on 28/09/2022 - 22:03
Low battery icon for old Pentax Optio E60
Just a thought - does a low or zero battery icon actually stop it taking shots? If battery monitoring is faulty but is only for informing the user, you should be able to keep shooting until the batteries really die. Just carry some spares because you won't know when they will die. I once got scary l...
Posted by Lubbyman on 16/10/2022 - 08:57
A funny line in my image
There are some very bright, burnt-out areas. I wonder whether one of them is causing problems, perhaps internal reflections within the camera itself or even overloading the sensor's electronics. Do you still get an artefact with an ND filter if there are no very bright spots? Steve
Posted by Lubbyman on 19/10/2022 - 22:56
A funny line in my image
Is it due to light getting in through the viewfinder? It might be that if the viewfinder isn't covered. It would seem this could be the case as it also does it with a screw-in filter. Although when I did along exposure without covering the viewfinder, the light leakage was more evenly spread across...
Posted by alfpics on 20/10/2022 - 09:40
k3 ii acting up this week
That's the screw-drive AF coupler. It should be retracted as per your K3 when the body is set to MF and protrude as per your K3ii when the body is set to AF (or at least that's what happens on my K3 :wink:). In the AF position, pushing a lens onto the camera pushes the coupler into its hole then it ...
Posted by Lubbyman on 26/10/2022 - 17:47
k3 ii acting up this week
Thanks a bunch, Lubbyman. I'll check if it retracts when in AF vs MF. Didn't know about that! I'll also look into properly cleaning the contacts. The only other thing I forgot to mention, which made me think it was beyond my skills. When I had the Sigma 17-50mm lens on it. The lens has a lock switch...
Posted by davidxgreen on 26/10/2022 - 19:15
Lens not functioning in manual mode
My SMC Pentax-DA 18-55 mm lens does not work in manual mode. I can try to change aperture but it doesn't chang the exposure of the image taken. In the metadata the aperture changes but not the actual exposure. Shooting in P mode does not reveal any problems but I fear lens aperture is actually "f...
Posted by Morten on 29/10/2022 - 10:53
dust spots on stacks
In spite of my new Rocket blower's best efforts, although a single image appears spot-free, when amassed together in a 25 image stack, they all gang up together in some amazing arrangements that appear all too readily in the final stack-image. What sort of shot can I take to show all the spots o...
Posted by coker on 16/02/2023 - 21:56
dust spots on stacks
What sort of shot can I take to show all the spots on a single (printed) image, to indicate their position on the sensor? Bright blue uniform sky. Stop down to f22. Fire
Posted by pschlute on 16/02/2023 - 22:31
dust spots on stacks
Just remembered. Both my K20D and K3 have a 'dust alert' function which involves pointing the camera (with lens) at a bright, white wall or similar then pressing the shutter button. The result is an image on the rear screen showing the position of each speck of dust as it appears when you look at th...
Posted by Lubbyman on 16/02/2023 - 23:25
dust spots on stacks
I see your problem - can't miss it with those examples! It's hard to tell whether they are due to dust or a pixel problem. My dust tends to be bigger blobs! Strange that dust alert is greyed out, particularly as the earlier K20D has it. Perhaps it's the lens. The K20D manual doesn't say what type...
Posted by Lubbyman on 17/02/2023 - 09:43
dust spots on stacks
And by way of illustration, here's a crop from one of my stacks. The dark, thicker streaks on the left are due to dust on the sensor (they are sometimes much bigger... :(). The lines of coloured dots are pixels that are stuck on for whatever reason. Steve
Posted by Lubbyman on 17/02/2023 - 14:10
dust spots on stacks
Dust on the sensor tends to be OOF ,these are in focus like a stuck pixel I wondered if it is a dead pixel moving around due to lens breathing while refocussing the stack. John
Posted by DOIK on 17/02/2023 - 16:08
K-s2 Battery Issue
Just a thought but have you checked the battery contacts in the camera? If the current is trying to fight through a layer of crud it may make the batteries look weak. A hard eraser on the end of a pencil will often do the trick for cleaning the contacts.
Posted by roberrl on 04/08/2023 - 09:44
