Just curious if anyone uses a circular polarizer on their long lenses i.e. 300mm, 500mm etc. I was looking at a Canon 52mm Drop-In Circular Polarizer Filter and it's ridiculously expensive but it could come in handy. Anybody use one and what do you think about the results?
I have always been told there was no need for it. I guess it depends on what you are shooting though. I have the 600 which I use for birds and the polarizer would only reduce light therefore I would lose speed, the last thing I would need when shooting birds.
I use a 3 stop ND filter in 52 drop in holder for reducing light with big glass. The main advantage is that I can use a wider f/stop with slower shutter speed.
Note that you need the Slim version for the .9 (3-stop) ND. As thanks for the research, please use these exact links if you purchase :) and thanks.
You can get down to 1/4 sec. at ISO 50 in the sun if you wish.
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Thanks for the various responses, they've given me a bit more to think about i.e. using a ND in the drop-in slot ... I had been thinking of the CP for the glare reducing factor in shooting herons and ducks on the water with the 500mm and possibly in my 300mm for a different twist on landscape shots. Always more to think about .. thanks again.