Wow, thanks! So I guess especially for the wide angle, putting a polarizer on top of a UV filter is a no-no due to vignetting… I haven’t noticed vignetting problem with my B+W filter, and it’s not a low-profile one…Maybe I’m just not looking too hard.
A UV filter is thinner than a polarizer. Polarizers have two rings, a fixed ring portion that screws into the lens and a rotating portion that allows you to align the polarizing element to get the effect (best if oriented 90 degrees to a line between lens and position of the sun). Depending upon how aligned, polarizers will either strengthen or weaken reflections etc. One way to see if vignetting will be a problem is to ‘double stack’ the UV filters on the wide angle lens and then look at the corners of the viewfinder/pictures and see if they are darker than the center.
One of the problems with stacking a polarizer on top of a UV filter is that each filter adds aberrations to the image. I tend to take my UV off when putting on the polarizer.. but you also have to be careful there. Many lens built today have plastic front thread barrels.. which are too easy to crossthread. Once cross-threaded, trying to get the filters on properly will be a problem.
NOTE: The ‘X’ series of Hoya filters is about the thickness of a UV filter (Super Multicoat thin profile). I suspect that the Pro-1 line is also about the thickness of a UV filter. The others are thicker. (This is generally true across the manufacturers) The thin profiles are a little harder to handle because the ring you have to handle to align the filter is about 2mm wide at most, same size as the ring to screw it onto the lens.[/quote]
Thank you sir! I just ordered a Hoya “X” filter from Adorama directly. Thanks for the reminder about plastic filter threads on some lenses.
I figured out that why tamron’s are at the prices points that they are at why Canon L’s are at there’s. While I’m pretty happy with the Tamron, it’s not quite the same build quality of Canon. My rule of thumb for putting on a filter is to rotate them on ccw for a bit to get alignment first and then to rotate them cw to actually mount them. Haven’t had issues with the plastic threads (yet) 🙂
