Search results for 'sensor cleaning' - page 617
cleaning of negatives/slides
I'd go with what steven and john are saying, just use a tiny tiny drop of washing up liquid. For those really really stubborn stains i use PEC-12 and PEC PADS. Buy the bigger Pads, they make things less fiddly.
Posted by Lü on 02/07/2013 - 16:06
cleaning of negatives/slides
Thanks for the tips guys; I`d heard of the washing up liquid trick but wasn`t sure if it was just an "o.w.t". I will give it a try on some not too great neg`s and see how I get on. Best Regards, John.
Posted by browndale on 03/07/2013 - 11:26
cleaning of negatives/slides
John - make sure the water is cold, not too soapy, and only keep them submersed in the water for the briefest of periods - enough to cleanse the detritus from them. Squeegee them to remove excess water, and hang them up well away from any source of heat - it stops the neg's from deforming, and there...
Posted by steven9761 on 03/07/2013 - 13:32
cleaning of negatives/slides
In a dust free environment too, unless you want sensor spots to look like they never existed and accept masses of dust spots instead. So no soft furnishings and no air movement. Next time the sun streams through the blinds, check out how dust free your air is....
Posted by johnriley on 03/07/2013 - 14:14
battery grip does not work
fritzthedog What type of alcohol is best? I have a 15year single malt at home, but that is for drinking. Regards. Nadeem If you don't have any "cleaning alcohol" such as Isopropanol then Vodka or Gin would be better than whisky. Whichever you use, just check it on some hidden plastic b...
Posted by Gamka on 03/07/2013 - 17:36
DA* 50-135 motor failure
Have you tried cleaning the contacts? worth a try. I also have a lens with temperamental SDM, but I find that if I mount the lens and then (reasonably) gently spin the focus ring back and forth from closest to furthest a few times, the SDM works again; not sure why but it does the job for me... C...
Posted by matwhittington on 07/07/2013 - 15:22
SD Card 'electronically locked'
I would definitely check the contacts on the SD cards - perhaps cleaning with isopropyl alcohol. It is possible that the "Secure" part of the SD card has been invoked (perhaps by accident or a card-write error). The SD card has a 16byte password that will prevent all reads & writes to the flash a...
Posted by MattMatic on 10/07/2013 - 12:50
K5-IIs and asahi smc 135 lens
There's something up with this image, note the strips at the border of the frame. Processing or sensor issue?
Posted by Pentaxophile on 15/07/2013 - 20:22
K5-IIs and asahi smc 135 lens
A very old lens like this is not the best to use with a modern sensor. Some are good, but you'd be better off with a DA lens from the current range. There are clearly problems with the image, from masses of over-exposure to what may be a RAW converter problem.
Posted by johnriley on 15/07/2013 - 21:44
K5-IIs and asahi smc 135 lens
A very old lens like this is not the best to use with a modern sensor. Some are good, but you'd be better off with a DA lens from the current range. There are clearly problems with the image, from masses of over-exposure to what may be a RAW converter problem. I just choked on my Kronenbourg. I ...
Posted by DrOrloff on 15/07/2013 - 23:07
K5-IIs and asahi smc 135 lens
Also took this one at the same time. Thanks for all your comments. It is right I am still getting to grips understanding how to use the older lens. I did have a sensor issue on my K5II it has been replaced by pentax. I don't want to go down that road again! John K I will update the software, coul...
Posted by caj26 on 16/07/2013 - 07:38
Pentax k5 sensor issue
it was a long time since last time I had the same issue. So far I thought the problem was related to sensor overheating, in fact usually it is enough to wait some minutes to solve the issue. However this time I could not take one shot right. I am sure you can understand my frustration.
Posted by sebas77 on 04/08/2013 - 16:51
Pentax k5 sensor issue
I presume you're referring to the reddish stripes bottom right? If it's a camera fault it's unlikely to go away without a repair, but have you eliminated flare as a possible cause?
Posted by johnriley on 04/08/2013 - 17:19
Pentax k5 sensor issue
if it was a camera fault should be reproducible right? It is not. It is not even a flare, because it happened only with the long exposure and the ND filter on. I have used this ND filter dozen of times and this I have seen this issue just once before.
Posted by sebas77 on 04/08/2013 - 17:48
Pentax k5 sensor issue
here the situation is more severe, as you can see it happens only on the underexposed area
Posted by sebas77 on 04/08/2013 - 17:54
Pentax k5 sensor issue
Are you covering the viewfinder on long exposures to prevent light leakage?
Posted by SteveEveritt on 04/08/2013 - 19:05
Pentax k5 sensor issue
frak, that's what I forget everytime! Do you think it could be it?
Posted by sebas77 on 04/08/2013 - 20:00
Pentax k5 sensor issue
no one else experienced the same issue? I've already contacted SRS, but I have a strong suspect that Steve is right.
Posted by sebas77 on 05/08/2013 - 11:00
Pentax k5 sensor issue
They are very straight but not horizontal. The light is split as if being refracted through a lens or prism. I don't know if it is sensor ... light leakage through the viewfinder might be possible or maybe a reflection off the filter frame.
Posted by Gamka on 05/08/2013 - 11:40
Pentax k5 sensor issue
It does look more like light leakage than anything. You didn't mention the long exposure in your original post! Looking at the angle of the sun, I wonder if direct sun was shining into the viewfinder?
Posted by Pentaxophile on 05/08/2013 - 13:03
