Does anyone have any experience or recommendations using these two lenses in a Sea & Sea NX70 housing.

Is the SS Compact Dome port # 56601 suitable, and does it need the SX Extension Ring #50261.

Would this combination be suitable for the Nikkor 17-55mm as well, although the lens is physically larger
does it require the larger 40mm extension ring

Lastly, do either of these lenses require a diotper

Thanks in advance for your help


David Budd