Jump to content


Barmaglot

Member Since 30 Mar 2017
Offline Last Active Today, 06:33 PM
-----

Posts I've Made

In Topic: Nauticam Macro to Wideangle Lens 1 (MWL-1) for Full Frame

Today, 08:41 AM

I don't see any reason why it wouldn't work with a Sony or Canon FF macro in the 60-75mm range.  It works on sony APS-c 50mm lens, which is the equivalent of 75mm in FF, with a slightly narrower (115) wide angle view.

 

But, I see that Sony FF only has a 50 mm macro (too wide?) and a 90mm (too long?).   But, I am sure Nauticam is doing more testing and will update.  Don't know if Canon has a 60mm or not in FF

 

Sony has a 70mm macro from Sigma, but it extends to focus, so it might not work at all.


In Topic: FS: Seacam housing for Canon 5d mkii

11 October 2018 - 09:38 PM

You may want to edit the thread title. Just saying' ;)


In Topic: Suggestion for Ambient Light Shooting?

04 October 2018 - 09:48 AM

Have a look into designing and 3d printing a focus ring for the Laowa. You will probably have to set to a fixed aperture, because the ports that would most likely work with this lens will probably not allow for two gears (apart from the fact that designing to gears yourself might be quite tricky). Manual Aperture/manual focus lenses are a bit tricky underwater and no manufacturer supports them natively, but as long as you find a dome with the right dimensions you should be good. Most likely this would be the ZEN DP170 because most of the Nauticam Domes have a built in extension and the Laowa is very short. Generally, the lenses you own don't seem to be ones best suited for underwater use.

 

I did this with a 7Artisans 7.5mm fisheye, except instead of designing and printing a gear, I just padded the focus ring with a few layers of double-sided tape until the zoom gear for 16-50mm lens was a snug fit. Only had a chance to dive with it once so far, but it seemed to work fairly well behind a 4" dome. Set aperture to f/8 before sealing the housing and focus wasn't too difficult with focus peaking enabled. I did get some vignetting in the corners, but a bit of defishing in Capture One got rid of those. Laowa 7.5mm would be much more difficult though; being rectilinear it requires much more precise focusing than a fisheye, and of course it needs a bigger dome.


In Topic: Suggestion for Ambient Light Shooting?

03 October 2018 - 11:59 AM

I use an A6300 in a SeaFrogs housing, no issues with WB on stills - just shoot RAW and fix in post. I don't have the first clue about editing video, but when I tested the underwater auto white balance mode, it seemed to work okay. As far as housing ergonomics go, the only thing I can fault it for is that the lens zoom gears require careful alignment to work properly - otherwise, no complaints.

 

For the reference, a couple samples - this was shot using ambient light at fairly shallow depth, maybe 10-12m:

 

XaWhiRZ.jpg

 

This was at 31m:

 

ky84QW9.jpg

 

Both used A6300 with kit 16-50mm zoom behind a flat port.


In Topic: Panasonic m43 10-20mm f/1.7

27 September 2018 - 04:15 AM

Probably right about trying to wrench that into a port. Id be happy with a slower (and skinnier) lens with that zoom range.

 

Canon EF-M 11-22mm? Not worth changing camera systems for? :)