----- Original Message -----
From: Pierre Bellavance <[EMAIL PROTECTED]>
> Maybe I should get a 77mm Polarizer ($$$) for the 100-400? Can I use the
> 72mm filter on this lens with an adapter? Maybe at 400mm but not at 100mm?
>
> I only shoot negative color film, and was wondering if I would need other
> filters for outdoors photography.
Pierre, besides a 77mm polarizer for the 100-400 (a must--I think), I have
had some good results with the 81 series filters for wildlife. I like how
they give an additional warm tone to the animals' fur/coat and usually use
the 81A. The 81B is nice sometimes too for flat, generally colorless winter
days when doing landscape or similar shooting, depending upon how you want
to handle the color of your subject. I hear too that Hoya has a new warming
filter just out that does a better job than the 81A or B but haven't gotten
anything additional on it.
I've never tried a step up/down filter adapter, maybe I should as I've
duplicated a LOT of 72 and 77 mm filters.
> I've heard of Gradual Neutral Density filters. Are they useful? Maybe for
> the wide angle lens?
For this, I'd suggest the Cokin or similar system. It's not the easiest
setup to use or carry, but it terms of flexibility of creative effects, I
think it's the way to go (after you've resolved the filter holder's tendency
to vignette when wider than about 24mms).
Gary Russell
Olympia, Washington - USA
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