Re: Digital Sensor

"dj_nme" <dj_nme@[EMAIL PROTECTED]
> wrote in message 
news:47a99cb3$0$5617$5a62ac22@[EMAIL PROTECTED]
> Followfocus Productions wrote:
>
>> Does anyone recommend a cheap way to check and clean the sensor of my
>> DSLR camera?  I read that dust gets in easily. I have seen some tools
>> that clean it and check it for dust and particles, but was wondering
>> if there is a cheap or free alternative?
>>
>> Many thanks in advance!
>>
>> GN
>>
>> http://www.followfocusproductions.com
>
> A free way to check for sensor dust is to stop your lens down to it's 
> smallest aperture (eg f1:22) and take a picture of something featureless

> (eg a cloudless sky or a large smooth surface).
> If there are specs of dust on the sensor, they will have cast shadows
and 
> show up as dark spots/dots in the image.

To save going outside! Open PS on a white screen and shoot that at f22 
focusing to infinity, upload and use curves to darken the shadows to 
emphasis where the dust is.

Wet systems are good, but i prefer Arctic Butterflies.