Archived posting to the Leica Users Group, 2011/06/20
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Most sensors need cleaning after a while. If the camera has a self
cleaning vibrating system, it needs a lot less, but eventually it too
needs cleaning. If you only shoot at f/1.4 you really never need
cleaning; if you tend to shoot at f/22 a lot you need constant
cleaning.
Best is to learn how to do it yourself. Some swabs and fluid,
sparingly applied, and a good magnifier are a start. To check, shoot
a blank surface out of focus at f/16 or 22, then bring the image into
PS and increase the contrast. That'll show every spot.
At 10:10 AM +0100 6/20/11, Neil Beddoe wrote:
>I normally shoot pictures of people in towns and as a result my pictures
>don't tend to have large areas with no detail such as blue skies. I shot a
>picture of a coastal scene at the weekend and discovered lots of round spots
>in the sky area when I upped the contrast. They look like spots of oil on
>the sensor. When I took Aperture's loupe to the pictures I took when I
>first got the camera they were there too, except that they are fewer in
>number.
>
>I'm going to take the camera to the Leica Centre in Mayfair for a sensor
>cleaning but but this looks like oil getting sprayed from somewhere inside
>the camera to me. Has anyone else seen this problem?
>
>Neil
>
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--
Henning J. Wulff
Wulff Photography & Design
mailto:henningw at archiphoto.com
http://www.archiphoto.com