Most of my lenses have a 52mm filter size, so I would like to step them all up a few sizes and use larger filters, in the hopes of getting a bit more coverage out of them (because sometimes I use 2 filters together, color plus polarizer). I've been using 52mm filters (that I just happen to have from a while back) and have been holding off on my filter purchases until I stabilize out my usual bunch of hiking lenses. I think I've done so, and I'm ready to purchase the filters. One of each: strong yellow, strong green, strong red, and a polarizer.
So my question is this, when stacking two filters on top of each other, roughly how large would I need to go (starting at 52mm) to avoid cutting back the existing coverage of the lens itself (with no filters). By that I mean, would 52-67 step-up with two 67m filters stacked to avoid decreasing my coverage? If not 67m, how about 77mm? Is there any way to calculate this? Or would it probably be the safest bet to go with 77mm and not even think about 67m?
And on the same line of thought (and a possible reason to go 77mm versus 67m), my one odd ball lens that has larger threads (90mm super angulon) has 67mm threads. I'd like to sometimes run a single filter on this lens, and again keep as much coverage as possible. Would a 67-77 step-up plus one filter yield a bit more coverage than just using a native 67mm sized filter?
I know it will probably be brought up, but I'd like to avoid square filters. I tried them awhile back with medium format, and I didn't enjoy using them to much. I've determined that I'm a screw-on-filter kind of guy
Thanks for any insight on this!
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