First off, newbie here.
I've tried with some difficulty to answer my own question, but it would be helpful to get some experienced answers. I was recently in Europe and I've noticed that many of my pictures have a haze in the background. Sometimes it appears slightly bluish, which I understand may be due to UV light...but I'm not sure if that's really the problem. I was never at very high altitude, and the problem seems to be greatest in pictures I shot around noontime, which leads me to think a polarizing filter might help.
If it's relevant, I have a Nikon D70, Nikkor 28-100 mm 1:3.5-5.6 G lens.
Any help or suggestions would be greatly appreciated!