nex7 with 8mm fisheye

Please register or login

Welcome to ScubaBoard, the world's largest scuba diving community. Registration is not required to read the forums, but we encourage you to join. Joining has its benefits and enables you to participate in the discussions.

Benefits of registering include

  • Ability to post and comment on topics and discussions.
  • A Free photo gallery to share your dive photos with the world.
  • You can make this box go away

Joining is quick and easy. Log in or Register now!

dlutzer

Contributor
Messages
72
Reaction score
3
Location
New York, New York, USA
# of dives
50 - 99
Hi all,

Was just curious if anyone had tried the 8mm fisheye for the nex in a dome underwater. I am debating getting the housing and I am attempting to pan out all the little details.

Cheers,

Dave
 
Got the Samyang 8mm F2.8 a week back and just did a pool test. Focuses well when set to F8, focus 0.3m within the 4.33" dome for objects a metre or more away. Anything closer than 0.6m will become out of focus. Here's a pool shot.
DSC02268.jpg

---------- Post Merged at 08:53 PM ---------- Previous Post was at 08:42 PM ----------

I also tried the Sigma 19mm within the dome - it's very sharp for objects a metre away, and looks sharp at 0.6m too. Anything closer is out of focus.

DSC02310.jpg
 
What brand is the 8mm Fisheye?
 
I don't have one to compare, but my impression is that the 16mm has quite a bit of chromatic and edge distortion on the nex7.
 
I don't have one to compare, but my impression is that the 16mm has quite a bit of chromatic and edge distortion on the nex7.

I've been using the kit 16 mm with both the fisheye and the wideangle adapters. Yes the is a lot of chromic distortion. I can repair a lot of it with Lightroom 4. However, overall image quality is disappointing. Getting much better color, contrast and sharpness with the Sigma 19mm.
 
Here are some shots unedited using the Samyang/Rokinon 8mm. Notice the anitiflare shroud is just visible esp on surface shots.

DSC02347-001.jpgDSC02352-001.jpgDSC02362-001.jpg
 
Do you still have full controls of the lens in the housing? I only ask because there is an aperture control ring on the lens.
 
Nope, in a dome port, I just used min focus distance 0.3 and F8 in order to focus on the virtual image. F5.6 might work too, but I have just left it on F8. You can turn on focus peaking to have an idea of the focused areas.
 
https://www.shearwater.com/products/teric/

Back
Top Bottom