Shooting with a 16-50mm in a dome?

[DevilEyeDog]

I have a fish eye lens that I love to use one some dives, but the majority of my dives I shoot with the 16-50mm on my Sony a6300. With the fish eye I need the dome port instead of a flat port.
I just tested it on land and it seems like the 16-50mm doesn't get much distortion through the dome port. I'm heading to Indonesia and would love not to lug both ports.
Anyone just keep the dome port on regardless of lens?
Will all my pictures in water come out distorted?
TIA!

 

[WS007]

It is to the contrary: At WA focal lengths the photo gets distorted at the corners when you shoot through a planport. A domeport is always the better solution, but at long focal length you do not need it and it makes the mounting of diopters for macro impossible...
Important is that you take the right extension/positioning together with the dompeort, which depends on the lens and on the housing manufacturer. See e.g. here for Nauticam: N85 Sony E-mount Systems Port Chart

Wolfgang

 

[DevilEyeDog]

Thanks for all the info!!!

 

[Barmaglot]

For the reference, here is Sony 16-50mm on a6300 shot at 16mm through flat port:

The same image (standing in roughly the same spot in the pool and using the same angle) taken through a dome:

10-18mm@10mm through flat port:

Same shot through a dome:

For comparison's sake, a 7.5mm fisheye lens through a 4" mini-dome:

 

[Nemrod]

I have use my Sony "kit" lens with the 4.33 inch Nauticam dome without distortion.

Curious, but what fisheye lenses are you guys using since Sony does not make one other than the converter and the others I see are full manual only??

You may sometimes need a diopter screwed to the lens because a dome forms an image and if that image is closer than the focus capability of the lens then you need a (+.5??) diopter. It might be time to try it in a pool and see what you need and how it performs for you.

 

[Barmaglot]

Curious, but what fisheye lenses are you guys using since Sony does not make one other than the converter and the others I see are full manual only??

Tokina 10-17mm with Metabones adapter works great on Sony cameras.

 

[Lewis88]

Tokina 10-17mm with Metabones adapter works great on Sony cameras.

Also using the Tokina with a Sigma MC-11 adapter.