Photography: Camera sensor size difference

just realised an error in my post
"if you use a good lenshood or matte box then multi coating probably essential"
is wrong if you are using a lenshood then it's not so important to have multicoating as you are less likely to have stray light entering the lens.

Makes sense. I presume the multicoating's party trick is to tame glare/reflections ?

what filters are you after?

Well, I need something to kill excessive light (I want to keep the aperture wide and ISO low), an ND would be the obvious choice (or a set) - but I want it to be infinitely variable (don't ask why!) - So I was thinking of stacking two polarizers a circular and a linear and turning the front filter to adjust the light getting to the camera. (?)

I also want something to stick on the front of my Nikon 80-200 f2.8 because it cost a small fortune and I am fucked if I scratch or otherwise knacker the front element. What do you reckon here, a UV or just a plain bit of glass (whatever they are called?).

hoya for value B&W if you can afford it. Lee if you want big nd grads and a nice big lenshood and are likely to use 'gels' for cc and lighting correction of mixed sources.

I think I will stick to screw in circular filters for the moment.

Cheers for the info I will have a look on t' 'bay for some Hoya/B&W action.

Oh, yeah, nearly forgot, racist.