Hi,
I was adviced to use dry clean method instead of using liquid on the filters or lens.
Wondering:
How can we simply recognize when seeing spoil coating on the filter or lens?
Do we need to turn certain angle (under bright light) to see it? or just normal position?
Pls share your opinion so I can use for my reference when want to buy 2nd hand filters or lenses.
Thanks
I was adviced to use dry clean method instead of using liquid on the filters or lens.
Wondering:
How can we simply recognize when seeing spoil coating on the filter or lens?
Do we need to turn certain angle (under bright light) to see it? or just normal position?
Pls share your opinion so I can use for my reference when want to buy 2nd hand filters or lenses.
Thanks