Jump to content


Photo
- - - - -

Seafrogs Setup for Sony Zeiss 16-35mm f4 with zoom?


  • Please log in to reply
5 replies to this topic

#1 jtmess

jtmess

    Sea Wasp

  • Member
  • Pip
  • 2 posts

Posted 20 April 2019 - 11:51 AM

I am looking to purchase a dome port so that I can use my A7iii Seafrogs housing with a 16-35mm Sony lens (either the G master f/2.8 or Zeiss f/4). Are there any port setups for this lens that have a zoom gear to use the full range of zoom?

 

 



#2 davec13o2

davec13o2

    Lionfish

  • Member
  • PipPip
  • 58 posts
  • Gender:Male

Posted 20 April 2019 - 01:12 PM

Seafrogs doesn't make a zoom gear for the 16-35 mm lens.  I have their a7Rii housing and made my own zoom gears that fit the 24-70, 28-70, and 16-35.  It required a mini-mill, mini-lathe, and specially designed 3D printed gears.  I wouldn't do it again.

 

Attached Images

  • assembly corner view.jpg
  • large gear.jpg
  • small gear.jpg


#3 Barmaglot

Barmaglot

    Sting Ray

  • Member
  • PipPipPip
  • 229 posts
  • Gender:Male

Posted 20 April 2019 - 07:36 PM

A7 III housing should be easier, as it already has the knob and gear built in, but you'll still need to make your own zoom ring, as they don't make one for 16-35mm.



#4 davec13o2

davec13o2

    Lionfish

  • Member
  • PipPip
  • 58 posts
  • Gender:Male

Posted 21 April 2019 - 05:33 AM

Make sure there's enough space for the gear attachment sleeve between the lens and the inside diameter of the extension and that the sleeve can be reached for attachment.



#5 Barmaglot

Barmaglot

    Sting Ray

  • Member
  • PipPipPip
  • 229 posts
  • Gender:Male

Posted 21 April 2019 - 06:48 AM

Considering that they have a focus ring for SEL90M28G, which is longer and thicker than SEL1635Z, space shouldn't be a problem.



#6 Barmaglot

Barmaglot

    Sting Ray

  • Member
  • PipPipPip
  • 229 posts
  • Gender:Male

Posted 03 May 2019 - 08:12 PM

And hey, they just released (among other things) zoom gears for 16-35mm f/2.8 GM, 16-35mm f/4 Z and 12-24mm f/4, working with the A7 III housings and the new generation A7 II housing (the old generation A7 II housing that davec13o2 has lacks a zoom knob, so that one won't work).

 

https://seafrogs.com...ions/zoom-gears