Search results for 'sensor cleaning' - page 628
Anybody enjoy cleaning fungus off lenses?
Fungus is fairly easy to sort out and only develops in poor conditions. Any decent clean will prevent fungus from reappearing. What I'd be more interested in for this lens would be the possibility of balsam separation. That's way worse than fungus and does affect the older lenses. Is that an offe...
Posted by danofmk on 22/04/2020 - 18:27
Posted by HarisF1 on 22/04/2020 - 21:40
Anybody enjoy cleaning fungus off lenses?
Far more difficult is pulling the lens apart and even more difficult is putting it together again afterwards. I like to keep lenses in their cases but the cases are stored on open shelving in the study and they all have several sachets of silica gel inside. You can get them in bulk for peanuts on E ...
Posted by davidwozhere on 23/04/2020 - 01:23
Anybody enjoy cleaning fungus off lenses?
Where is the fungus ?
Posted by geordie01 on 23/04/2020 - 17:23
Anybody enjoy cleaning fungus off lenses?
Front back and middle from what I can tell! Just around the edges on the front, but all over elsewhere
Posted by danofmk on 24/04/2020 - 07:14
Anybody enjoy cleaning fungus off lenses?
send it back if it was mine i would have a go at it as i have the gear to do it but if you have not get your dosh back if you still want one i have one i could be persuaded to part with
Posted by geordie01 on 24/04/2020 - 11:00
Anybody enjoy cleaning fungus off lenses?
Thanks Starting to look like a return I only picked it up as it was cheap, but thanks for the offer!
Posted by danofmk on 24/04/2020 - 13:19
K3ii NOISE
A different lens isn't likely to make a difference to noise, noise comes from the sensor and electronics. It's always present in the electronic output from the sensor (thermal noise etc.) and the amount of noise is pretty well independent of the light level. If the signal to noise ratio (i.e. light ...
Posted by Lubbyman on 26/06/2020 - 17:09
K3ii NOISE
A different lens isn't likely to make a difference to noise, noise comes from the sensor and electronics. It's always present in the electronic output from the sensor (thermal noise etc.) and the amount of noise is pretty well independent of the light level. If the signal to noise ratio (i.e. light ...
Posted by User_removed on 26/06/2020 - 17:42
K3ii NOISE
Here's the results of a test done this evening with the K3 + 16-85mm (a very good lens) to show signal to noise ratio in practice. Taken outside, bright but overcast, uniform light. Subject was a neutral (very dark grey) board. All at ISO 200 and f8, defocussed to minimise the effect of imperfection...
Posted by Lubbyman on 26/06/2020 - 23:35
K3ii NOISE
To help clarify further the effect of noise and noise reduction, do you have image 2 (at 1/400sec) but with the +4 stops added in camera (ISO 3200) for comparison? Not done yesterday. But just done it this evening. Same set up, same process, light similar but got a bit brighter after test shots to c...
Posted by Lubbyman on 27/06/2020 - 21:35
Asahi Pentax LX 'Sticky Mirror Syndrome'
I’d say yes, but be judicious in your application. Use a cotton bud and remove most of the “bud”, so there’s little cotton. When you apply the isopropanol (I’d say it’d work better initially at removing gummy bits), Dan lightly on a paper towel before working lightly. Might leave a chalky/powdery ...
Posted by Benz3ne on 03/07/2020 - 17:50
New remedy for old issue?
Hi I have owned a Pentax Kx for many years but has been largely unused for the last 6 years due to battery or software issues. I joined a debate some years ago about a possible remedy but then, no-one seemed to have found a universal solution. The problem is one of AA batteries used in The Kx and p...
Posted by Joats on 02/08/2020 - 23:47
New remedy for old issue?
I can only speak about the *istDS which does the same thing. The terminals on the inside of the battery door get compressed every time you close it. They lie nearer and nearer to the door over time and need to be physically pulled out again to make a decent contact. At the same time, a thin and invi...
Posted by davidwozhere on 04/08/2020 - 01:04
New remedy for old issue?
I have a similar issue with my iSt DL2. When I first bought the camera, I could get several hundred shots from a single charge. Then suddenly, it went down to about 10 shots and shortly after, it went to nothing at all. No matter what batteries I put in, I just get the battery depleted symbol imm...
Posted by womble_lancs on 20/10/2020 - 18:11
Warranty service
John Pye is an auction house. Their website says "All items in our technical auctions are repaired by our team of expert engineers who assess each individual item to determine the lenght of the warranty.". They say their tech services include: Fully refurbished tech and gadgets JPT parts a...
Posted by Lubbyman on 05/08/2020 - 21:29
Bulb mode on K5iis
nr will stand for Noise Reduction. With very long exposures the sensor generates random noise, so the camera makes a second "dark" exposure, analyses the noise pattern in that and removes that noise pattern from your shot. It's called Dark Frame Subtraction. This is why a 1 minute exposure needs ano...
Posted by johnriley on 24/08/2020 - 23:37
Manual problem with my K7
Ok, with the lens set to " A " does Tv and Av work as they should ? I think what Jak and I are trying to get to is poss is this a lens issue, perhaps contact cleaning or a is it a camera issue, something more expensive to solve possibly. Do you have another camera to try, a friend with a Pent...
Posted by Chrism8 on 08/09/2020 - 19:13
Sticky zoom lens
If you've got the PLM version (retractable) then the sticky manual focus might be linked to the fact that it uses a focus-by-wire mechanism. There's a chance the contacts between the lens and the camera might need cleaning.
Posted by HarisF1 on 04/01/2021 - 18:23
Pentax K3 ii and back Button Focusing
How is the focus on static things? You may need to do some focus adjustment. Won't help with tracking, but might improve the results when it does. Static focusing is pretty good provided I use the half press shutter method. Probably no sharper than the K5 ii but as the detail from the sensor is bett...
Posted by davidrobinson on 01/03/2021 - 09:44
