Originally posted by John Kovarik .....after 18 months of use I am noticing some dirt on my images that is not lens or mirror in origin. Before doing the sensor cleaning I thought I'd ask if anyone has some advice. I do not have an AC adapter........
Thanks, in advance........
Do a wet swap with fully charged batteries. Its easy. Apply gentle force, lean on the sensor, swap horizontally slightly tilted with steady motion, swap back with another side and tilted differently. Then done!
Remember don't apply too much solution nor apply too much force, it will leave trace. And before the wet clean, do blow away large particle that might scratch your sensor during swapping.
Once you have done one time, you will find how easy and effective a wet clean will be.
The last checking step is to shoot a blue sky at f/22 to see.