CPL filter for 100mm macro: Does it have to be SLIM?

I am planning on getting a CPL from B+W for my 100mm macro. SLIM fliters are necessary for wide angles to avoid vignetting. But I guess it will be alright with a standard CPL for the 100mm macro (or my 70-300mm zoom that is also 58mm wide). What do you think? Please advise asap. Thanx!

I would think that a standard thickness filter would be fine, though I don't have a copy of that lens to be sure. If you have any filters at all that fit the lens, put two on the lens or hold one a couple of millimeters away from the filter threads and see what the image looks like through the viewfinder with the lens stopped down (use the depth of field preview button with the aperture setting at f/16 or f/22.

100 macro lens does not need a slim filter or perhaps, any filter at all. Why do you want to use a CP?

gasrocks wrote in post #7604368
100 macro lens does not need a slim filter or perhaps, any filter at all. Why do you want to use a CP?

Good question. I get a lot of light reflected from shiny leaves when I photograph flowers and plants under strong sunlight and I thought (or perhaps read somewhere...) that I could get rid of some of those reflections with a CPL. Does it make sense?

cfibanez wrote in post #7604493
Good question. I get a lot of light reflected from shiny leaves when I photograph flowers and plants under strong sunlight and I thought (or perhaps read somewhere...) that I could get rid of some of those reflections with a CPL. Does it make sense?

Sure does....

I use regular thickness filters on my 18-55 and 50mm lenses with no vignetting. I am sure a standard thickness would be fine on your 100mm. If you are worried, by one size larger and use a step up ring.

Standard thickness works perfectly. You are definitely going to see amazing differences in the leaves when you start using the CPL. Just make sure to orient yourself about 90 degreess to the direction of the sunlight (ie have the light coming from your side, rather than from the front or from behind you) if possible.

Matatazela wrote in post #7605147
Standard thickness works perfectly. You are definitely going to see amazing differences in the leaves when you start using the CPL. Just make sure to orient yourself about 90 degreess to the direction of the sunlight (ie have the light coming from your side, rather than from the front or from behind you) if possible.

Thanks. This is very good. I really dislike the B+W SLIM filters. The Canon lens cap does not fit on them. I had one SLIM CPL on my old 17-85mm and the cap provided by B+W falls off all the time. A real pain in the neck!

I use a B+W UV/Haze (MRC) F-Pro Filter on my Canon 100mm f/2.8 macro lens. Not sure why you would consider a CP filter on this lens, unless perhaps you are contemplating telephoto shots?

Cyclop wrote in post #7605458
I use a B+W UV/Haze (MRC) F-Pro Filter on my Canon 100mm f/2.8 macro lens. Not sure why you would consider a CP filter on this lens, unless perhaps you are contemplating telephoto shots?

Vegetation in sunlight. The reflection off plants makes the leaves look washedout. Insects as well.