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| 1 | 2 | 3 |  » Stats |
Members: 48,655
Threads: 78,892
Posts: 821,435
Top Poster: glsammy (14,779)
| | Welcome to our newest member, redfrag | |  | | 
12-03-2010, 04:19 PM
|  | Member of the Wild Empire | | Join Date: Aug 2008 Location: kiveton park near Sheffield
Posts: 403
| | | I think my sensor needs cleaning
Hello
Can someone please confirm the marks on the first pic are due to my sensor needing cleaning. The black marks only really show at lower shutter speeds/ higher f number
Pic 1 F25 Shutter speed 1/160 
Pic 2 F7.1 Shutter speed 1/320 (The black mark in this pic is a lapwing!) 
If so has anyone used Harrisons in Sheffield for this service?
Cheers
Paul |
12-03-2010, 04:43 PM
|  | Moderator | | Join Date: Apr 2007 Location: Belvedere, Kent
Posts: 9,562
| | | Re: I think my sensor needs cleaning
Hi Paul,
Definitely looks like sensor dust to me, and quite a lot of it. It always becomes much more noticeable with higher f numbers.
Can't advise on Harrisons I'm afraid, as I'm a long way from Sheffield and always clean my own sensor anyway. You should be fine with any reputable camera shop, plus they will have insurance if anything does go wrong.
Good luck!
Dave P.
__________________
(a.k.a. "Horizontal Dave")
"A good man is hard to find, especially if he's hiding. In a field. With combat fatigues and a false beard." - Wilson Dixon |
12-03-2010, 04:45 PM
|  | Moderator | | Join Date: Oct 2005 Location: Nottingham
Posts: 14,779
| | | Re: I think my sensor needs cleaning
Yep, that's a dirty sensor screen.
Have a go at cleaning it yourself. I always have, I've lost count of the number of times I've done mine. It's not difficult and so long as you use the right equipment it's pretty foolproof. You'd have to be a real clumsy so and so to do any damage. 
I use the wet system using pads and eclipse fluid. Just make sure you get the correct fluid to suite your camera make and model and the right sized pads and away you go. |
12-03-2010, 04:54 PM
| | Member of the Wild Empire | | Join Date: Aug 2008 Location: kiveton park near Sheffield
Posts: 403
| | | Re: I think my sensor needs cleaning
Cheers
I did clean it myself a bit back so may have to try again,
Paul |
12-03-2010, 08:54 PM
| | Commander of the Wild Empire | | Join Date: Jan 2008 Location: S. Devon
Posts: 3,671
| | | Re: I think my sensor needs cleaning
I use a Delkin Digital Duster kit which includes a mini vacuum cleaner as well as wet wipes so you can have a really good clean around. But there are several good cleaning kits available. |
12-03-2010, 10:12 PM
|  | Officer of the Wild Empire | | Join Date: Feb 2007 Location: London
Posts: 955
| | | Re: I think my sensor needs cleaning
get a SensorKlear lens pen - they only cost a few quid |
22-03-2010, 11:01 AM
|  | Officer of the Wild Empire | | Join Date: Aug 2008 Location: Oswaldtwistle
Posts: 615
| | | Re: I think my sensor needs cleaning
Quote:
Originally Posted by tristanba  get a SensorKlear lens pen - they only cost a few quid | I definately advise against a lens pen, as glsammy said pads and eclipse fluid it really is easy |
22-03-2010, 01:07 PM
| | Commander of the Wild Empire | | Join Date: Jul 2008 Location: Watford, Hertfordshire.
Posts: 4,568
| | | Re: I think my sensor needs cleaning
Quote:
Originally Posted by pressld2 It always becomes much more noticeable with higher f numbers. | On another forum I posted an image showing the reason why. It should be self explanatory, but in essence, with a large aperture the spot is there but large and diffuse, and with a small aperture small and dense: http://homepage.ntlworld.com/james.ford60/dust.jpg
Jim |
22-03-2010, 01:15 PM
| | Officer of the Wild Empire | | Join Date: Feb 2007 Location: London
Posts: 955
| | | Re: I think my sensor needs cleaning
Quote:
Originally Posted by gobbiner I definately advise against a lens pen, as glsammy said pads and eclipse fluid it really is easy | Do you have any reasons for this? I and many others I know have been cleaning our sensors for years using this method without any ill effects. |
22-03-2010, 09:40 PM
| | Officer of the Wild Empire | | Join Date: Aug 2008 Location: Oswaldtwistle
Posts: 615
| | | Re: I think my sensor needs cleaning
Quote:
Originally Posted by tristanba Do you have any reasons for this? I and many others I know have been cleaning our sensors for years using this method without any ill effects. | 2 Sweeps of the pad fore and aft does the trick youve too much to do with the pen, and may i throw the question back at you, I and many others have been using pads and eclipse fluid for years its just a lot easier for someone who hasnt done a sensor clean before | | | |
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