So what, you are asking, does cleaning the sensor have to do with macro images? Well, I have been Photoshopping out a nasty artifact in my images for several months. I finally got up the nerve to clean the the sensor, (actually, it is a filter over the sensor that gets cleaned). A picture of a grey sky showed me that the artifact was gone, but had I damaged the sensor?
To check, I pulled out my macro lens which is also my best lens and took a shot of some moss growing with one of Hubby's bonsais.
I think there was no harm done, other than to my nerves!
The Canon 50D is supposed to be self cleaning but somehow the dust still gets in.
More macro images can be found at Macro Monday, hosted for us by Lisa