I am just going through my standard procedure before a wedding and I thought i would share with you my approach to 'dust specs on your sensor problem'. I keep the lenses on the cameras for a start, they never come off except for sensor cleaning every now and then. This may sound extreme but dust is best kept out of a digital SLR body. The way to check your sensor is simple.
Set the aperture to F22
Set the lens to manual focus and set it at infinity
Set the camera on aperture priority.
Find a sheet of white A4 paper.
Photograph the paper
Look at the image on the screen/histogram
Should be about mid grey
You now have an image of all the dust on your sensor. Open the image in photoshop and do image-adjustments-auto levels.
Instantly you should see all the dust better now. Don't panic dust becomes obvious at f11 - f32 so if you take photographs at f 2.8 - f8 you will not have seen most of this dust before. I will put a few images up with the next post on sensor cleaning showing the dust to worry about and the dust that will not bother you if you shoot around f5.6. Now how to get rid of it.........
Click on the image above to make it larger
~rb~
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