Originally Posted by sanjayc
I blow the dust off with a blower and then pour some clean water at room temperature on filter and wipe it off with a soft tissue that I got with a spectacle case.
tap water : if it doesnt have any impurities that might scratch, it may be ok.
never use ethanol or any other stuff
Soft tissue.....is it a microfiber cloth?
Canon EOS 5D, 24-70 f/4 L IS, 50 f/1.2 L, 70-300 f/4-5.6 L IS, 600EX-RT. Sigma 12-24 f/4.5-5.6 EX.