How do a clean the sensor inside my Canon 20D DSLR camera?
There are products you can buy from camera shops, and on the internet. They can be used, if care is taken. Be very careful, though. NEVER use something like cotton buds or tissues for this job, or even lens tissue/clothes or you will damage the sensor. Oh, and there should be a mirror lock-up function available from your cameras menu system. You might need to look on the Canon web site for a manual, if you can’t find how to do this by searching your menus. ALSO it’s very important that you do this with a fully charged battery and don’t turn off the power or remove the battery while you are cleaning the sensor.
