I've discovered spots on the image sensor of my DSLR camera that cannot be cleaned using a blower bulb, so I would like to know the risk of problems, such as further image deterioration or damage to the sensor or low-pass filter, associated with wet cleaning the image sensor. Just how high (or low) is the risk? Is this a difficult task to perform?
The products I expect to use are as follows:
In my research, I have also found the following products, for which there is a greater degree of trust because the manufacturer guarantees against sensor damage when used properly:
Additionally, the reviews are generally positive, so is it worth it?
My biggest concern at this point is further staining or residue from the cleaning process. How likely is this going to affect image quality, and would it be worse compared to the dust or other contaminants?
Answer
I do it regularly, I don't regard it as difficult. It's not that risky in the grand scheme of things but it's riskier than it used to be, especially with larger full frame sensors. Before the useless "self cleaning" function was implemented, the low pass filter assembly sat right on the sensor. Now there is an air gap to facilitate vibrating the LPF in order to dislodge dust. This airgap removes support for the glass LPF in the middle allowing it to bend and potentially break under pressure. See this photographers's cautionary tale:
http://forums.dpreview.com/forums/read.asp?forum=1032&message=30812646
So if you have a new camera with "self cleaning sensor" be very careful, esp. if it's full frame.
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