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Member Since 05 Dec 2012
Online Last Active Today, 08:45 PM

#362175 Strobe positioning with fisheye - tips needed!

Posted by Storker on 13 June 2015 - 12:53 PM


I understand I've been thinking back-a$$wards. With my 9-18 I'm used to extend the arms quite a bit to avoid backscatter, and angling the strobes somewhat inwards to hit the center of the frame. I'll try pulling the strobes close and angling them outwards.

And I've got the Nauticam 4.33", so it's not too big :)

#359810 Should i get a fisheye?

Posted by Storker on 09 April 2015 - 02:25 AM

Not quite yet. I've put aside funds for the lens, but still need to tuck away a few more €€€ for the port. I was just hoping I could convince myself I didn't need it. Sure. Fat chance for that... :lol2:


Right now, I'm deliberating whether to wait until I've saved up for the port as well, or if I just should go ahead, buy the lens to play with topside to familiarize myself with the FE perspective until I've saved up for the port.


First world problems  :mocking:

#356217 GoPro/still camera combo?

Posted by Storker on 03 January 2015 - 01:33 AM

The Black records 4K30 and 2.7K60 while the Silver only gets 4K15 and 2.7K30. OTOH, the Silver has an inbuilt LCD screen and retails for ~100$ less. And that's basically all the differences.

If I'm buying, I'l definitely get the Silver. I won't be needing high-speed recording underwater, but an LCD screen would be very nice.

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Typos are a feature, not a bug

#348769 OM-D EM-5 Nauticam with 9-18 zuiko?

Posted by Storker on 06 June 2014 - 01:08 PM

I've been shooting with the +2 diopter permanently attached since I did my test. I'm pretty sure I'm getting better technical quality on my pictures now, although I haven' done any systematic comparison. There's just too many variables to do a reliable comparison in the wild.

Sent from my Android phone
Typos are a feature, not a bug

#343523 OM-D EM-5 Nauticam with 9-18 zuiko?

Posted by Storker on 18 February 2014 - 02:43 PM

I started wondering if a closeup diopter might improve corner sharpness, so I went on Ebay and bought a set of Vivitar closeup lenses, 52mm, +1, +2, +4 and +10 diopters. Made it to the pool to do some tests with a couple of the lenses. Setup: Nauticam NA-EM5, 4" WA port, no diopter, +2 diopters and +4 diopters, no flash. All posted pictures are taken at 9mm.


I had to apply some rather heavy distortion correction in Lightroom. For +0 diopters I used -10, for +2 diopters I used -26 and for +4 diopters I used -32 at 9mm. At 18mm, I used -10 regardless of diopter. In addition to the distortion correction, I did some angle and Keystone correction to get comparable pictures (all shot freehand while freediving), but that correction was rather minor.


First picture is the test chart (image downscaled), printed on A3 paper, laminated and brought to the pool. Set up against the pool wall the chart sagged a little, so the images are far from 100% quality. However, to me they look rather convincing...

Second image is a composite (1:1 crops). Top left corner of the chart, 1:1 crop. Left column: +0 diopters, center column: +2 diopters, right column: +4 diopters. From the top: f/4, f/5.6, f/8 and f/11.

Attached Images

  • 20140217_SMOM2606.jpg
  • 20140218_9mm corner.jpg