leonasj wrote: to r28 V2 i put 55-62 ring.same size as leica hood diametr.
Thanks. I tried 55 --> 58mm step-up adapter + Lee 58mm WA ring, but still it shows very small amount of roll off in the corners; much less than with 55mm, however. The next size up Lee WA ring I have is 67mm, so perhaps, 55 --> 67mm step-up adapter will do the trick. Will see.