Quote Originally Posted by lensman_nh View Post
Not necessarily true. My T-90 requires a circular polarizer. It has to do with how the metering light is picked off. ....
Interesting. I hadn't thought of that but it makes perfect sense. Thanks.

Quote Originally Posted by artonpaper View Post
I've used linear polarizers on my Nikons FE and FM2, no problems. I think the polarizing effect is greater with linear polarizers. I recently helped a friend shoot pictures of her artwork with a borrowed Canon 5D. Her artwork was under glass and I didn't have polarizing filters fore the lights. There were both circular and linear polarizers in the camera bag. I saw the reflection reduced more with the linear polarizer.
I've also noticed that the linear polarizers are "better" in this regard.