Thanks! I was a bit afraid there's going to be obvious vignetting with the 82mm filter.
Not much risk of that - the image circle of the new TS-E lenses (17mm and 24mm II) is huge! The only reason the hood fot the 24mm II is so short is that when you apply a lot of shift, you get vignetting (but then, you get vignetting on the side of the shift even with no filter or hood mounted). At shifts up to Â±8, there's no vignetting and no effect of adding a filter - even the CPL stacked on top of the MRC UV (F-Pro mount) is fine. Above Â±8, you start to see some shading - but removing the filters doesn't help significantly, so it seems to be an optical 'feature' of the lens.