Hi,
I,ve bought a sea & sea 40D housing and glass dome with sx extension ring . I´m using it with 10-22 zoom and +2 diopter . Although I haven´t gone to sea yet , I made some tests in the pool and noticed some softness and chromatic aberration in the corners . Shoud I use a longer extension , like the 40 extension ring?
P.S : This extension was recommended by sea&sea itself for use with this lens .