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A.Y.

Member Since 04 Jul 2009
Offline Last Active Jun 03 2016 09:12 AM
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Posts I've Made

In Topic: Olympus GoPro killer?

03 June 2016 - 09:13 AM

GoPro 5 reportedly will feature 4K 60p and should come out around October.


In Topic: News: Sony A7S II (Yep another A7!)

12 September 2015 - 03:46 PM

A FF with amazing low-light capabilities, full sensor readout, internal 4K recording, and 5-axis IS, what an incredible tool this camera will be for under and above water videos.

 

Improving both NEX-5N and 5R manual white balance is as simple as adding a UW filter, most likely this is the case for the A7S2 also if its MWB has not been improved from the original A7S.


In Topic: Annoying Final Cut Pro Stutter

22 August 2015 - 05:13 PM

Try adding a short transition between clips to see at which duration the problem goes away. (or not)


In Topic: Sony a7s and MWB

22 August 2015 - 04:30 PM

White-balance RAW tests I did show a red filter is needed to get accurate MWB for both Sony 5R and 5N under more than 9m/30ft of water. This may be true for A7S also.

Manual WB without filter:
@ 12m/40ft requires 12000K and +150 Magenta
12000K is outside 5R/5N's 9900K maximum color-temperature range which produces an error message. I think +150 Magenta is also outside the camera hue range.

MWB with an Equinox red filter:
@ 12m/40ft requires 6400K and +150 Magenta
Even though 6400K is inside 5R/5N's color-temperature range, I think +150 Magenta is just outside the hue range, resulting in an error message. However, MWB produces very good colors.

MWB with an Equinox red filter:
@ 9m/30ft requires 4600K and +75 Magenta
Both color temperature and hue are within the camera MWB range so no error message.

BTW, shooting AWB with a red filter, NEX-5R and 5N produce strong green cast in backlit situations. Shooting MWB definitely prevents the drastic color shift, which = less headache in post.


In Topic: 4K: Current Pro- and Semi-Pro Underwater Filming Options

22 August 2015 - 03:53 PM

Nauticam NA-A7II Underwater Housing for Sony A7RII.