Optical Dome Port Sea&Sea

[scubbie]

Currently im using DSLR Sea&Sea MDX-D300 housing and i'm wondering if i use Optical Dome port for tokina Fisheye 10-17mm is it necessary to get the SX Extension Ring or can i use the Optical Dome port by itself. Any differences with or without the SX Extension Ring?

 

[bvanant]

According to S&S you need the extension ring. Without it you will not be able to do much close focus work.
Bill

 

[treb]

I am not sure how much difference there is between the Optical Dome port and the NX Compact Dome port but I have been using the latter with the 10-17 lens and no extension ring with no problems over the full zoom range and haven't noticed any close focus problems.

I got the compact dome port because the optical port was out of stock and I needed the port for an upcoming trip.

I would love to get hold of the optical dome port though to compare the image quality.

Cheers
Treb

 

[Mariozi]

There is not much difference in terms os size and optics, and it works both ways.
But I believe the SX is the best option to go for with both of them, specially for border sharpness...