Good Advice

Here is some good advice. Some other advice I came across recently and have put into practice is this: use filters only when absolutely necessary and never stack them.

My eternal quest to make my photos sharper benefited from this helpful tidbit I read somewhere on the internet, I can't remember where. I had been keeping a UV filter on the front of my lens to protect it and would then stack a polarizing filter or ND filter on top of it. I immediately took the UV filter off and use a polarizer or ND filter only when the situation dictates. Hopefully the results will be noticeable.