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Davide DB

Member Since 30 Nov 2010
Offline Last Active Oct 21 2017 05:08 AM

#386306 Keldan 8x - flux or CRI?

Posted by Davide DB on 31 July 2017 - 06:12 AM

I have a pair of (old) Luna-8 CRI. Maybe 6000 lumen or less. Before of these I had a pair of FIX 5000 lumen. 

I was satisfied with my FIX except for lumne output. I mostly do tech dives with older camera and more (light) is better. Nowadays I thing that 6000 lumen is the bare minimum.

Despite of light power I love my Keldan. I cannot say that in water the light is different but I realize that since I use them my video colors are nearly ok out of the camera. I mean that I spend less time in post to get colors right (err, actually colors I like).

Now with newer camera you can easily work at ISO 1600 and beyond while on my camera ISO 1000 is the highest I can afford.

I agree that on shallow waters you need very high power lights. I find deeper shots quite easy because you have just to manage light output and nothing else. On shallows shot it's very tricky to get good color rendering.

#386221 Bigblue lights feedback

Posted by Davide DB on 28 July 2017 - 01:33 AM

Thank Thani et al.


In the end my dive buddy opted for a pair of Keldan 4X 6000lm. A Swiss shop had two of them as surplus at 1000€ each. A real bargain. Grabbed!

#386140 Panasonic LUMIX GH5 for underwater video

Posted by Davide DB on 25 July 2017 - 05:28 AM

Just lend me your NA-GH5 and I will test WB at 100m  :mocking:

#385950 Panasonic LUMIX GH5 for underwater video

Posted by Davide DB on 18 July 2017 - 01:31 PM

Panasonic uses own sensor regardless of continuous cyclic speculation on using Sony sensors for some of their camera.
I'm sure about Nikon for all its flagship camera. Olympus for m43 cameras and even Fuji.
Sensors are designed by customer and produced by Sony to their specs. Moreover sensor it's only part of the story. All other components are designed by Nikon and co. Same for color science. Sometimes they are able to extract more juice from sensors than Sony itself.
Haha haha don't worry I'm jocking

#385898 Panasonic LUMIX GH5 for underwater video

Posted by Davide DB on 17 July 2017 - 04:38 AM

A nice video properly shot and edited







#384348 What are your GO TO Video settings?

Posted by Davide DB on 23 May 2017 - 12:20 AM

I mostly shot WA with artificial lights and deep so my habits could be very different if you shot shallow.


I shot completely manual: shutter speed twice the frame rate. i.e. 1/50 for 24/25p or 1/100 1/120 for 50/60p. I try to stay at least at F5.6 even better F8 to minimize soft corners. Of course if you are shooting shallow in tropical waters even ISO 100 could force you to use F11 or more. In this case I suggest a ND filter to work always in the best F range.

I ALWAYS try to stay in the hyperfocal range so I set my Panasonic GH3/GH2 to use the AF Lock feature. I focus on a medium range object (based on shot subject) locking the focus and then I start shooting.

Regarding ISO setting I rely on my experience on similar dive conditions. In my case most of the times I start with ISO 800 or 1000. As I said I mostly shot at depth of 60/70m or even more so ISO 800 is the bare minimum even with my two Keldan Luna 8. I can lower ISO for close WA shots where my lights completely fill the subject.


An evergreen topic is the WB settings. You will find endless threads on it. For my kind of dives I rely on auto WB but, again, your mileage may vary on your DSRL and if you shoot shallow or with ambient light.




EDIT: I find this to be a very valuable tool to understand how to get hyperfocal settings for your configuration: http://www.dofmaster.com/dofjs.html

#383779 Grass Valley Mync - videos and photo catalog and fast edit software

Posted by Davide DB on 04 May 2017 - 05:38 AM

Thanks. That does look like a useful program.


. Vee-Hive was the nearest thing I could find when I last researched this but will it be there in the long-term and support future formats?


Who knows?  :pardon:


Mostly it depends on the adoption rate among Edius users and beyond. it's important to see how many new features will be introduced in the next releases.

I remember the first versions of Lightroom had only plain tags and later Adobe introduced tag hierarchies.

Currently Mync is packaged along Edius 8.x. Mync means to Edius as Adobe Bridge to Photoshop.

In the next few months I have to build a new editing workstation. I will give it a try and give you some feedback. 

#383642 Grass Valley Mync - videos and photo catalog and fast edit software

Posted by Davide DB on 28 April 2017 - 05:47 AM

I remember that some time ago we discuss about a tool to catalog and view our clip collections. A sort of Lightroom specifically designed for video. AFAIR Nick Hope was looking for a tool like this.

This is one of that hidden gems that GV does not even mention in its official YT channel and it's even difficult to find on their website.


If you are PC based you should give it a try.




Mync has a unique video preview function that is second to none. The powerful video preview function provided is unlike that of any other software. This great feature of Mync is possible because Grass Valley also developed the EDIUS professional video editing software. In addition to the h.264 format that is used widely, including on the Internet and for smartphones, various formats used in professional workplaces are supported. With Mync, unified management is possible for diverse video materials, starting with XDCAM, P2, XAVC and XF-AVC, and including video files that ordinarily could not be checked without launching video editing software. Native data can be previewed without conversion.

Allows simple editing (with export to youtube and such even).


Basic version is completely free.



#383641 Panasonic LUMIX GH5 for underwater video

Posted by Davide DB on 28 April 2017 - 05:28 AM

A new guest at the party:


#383640 Easydive Leo 3 Wi and Panasonic GH5

Posted by Davide DB on 28 April 2017 - 05:07 AM

Housing is always the same, it changes just the wi-fi sw controller:




Now with GH5


#380613 Panasonic LUMIX GH5 for underwater video

Posted by Davide DB on 15 January 2017 - 06:12 AM


#380493 High ISO Pana GH4 clip to share

Posted by Davide DB on 11 January 2017 - 02:15 AM

Hi all,

As the title says.
Has someone some original underwater clip from a GH4 shot at high ISO to share?

I mean ISO 1000 or 1250 at least.


Thank you in advance

#380371 Sea&Sea YS250

Posted by Davide DB on 08 January 2017 - 10:50 AM

I have to try

#380279 Panasonic LUMIX GH5 for underwater video

Posted by Davide DB on 05 January 2017 - 09:52 AM

AutoISO now works in Full Manual Movie mode, and you have the ability to set the lower and higher limits to this, so enabling you to set Aperture and Shutter and let the camera keep exposure using ISO - this is a massive improvement...!

GH5 is the new GoPro (on Steroids)

I will get a second hand GH4 once everybody will run to get GH5

#380246 Panasonic LUMIX GH5 for underwater video

Posted by Davide DB on 04 January 2017 - 11:58 PM

It's there.

Read here: http://www.personal-...#Comment_229070

As usual, that thread is the best place to get info on GH5. Thera are at least two guys who had the chance to test a pre-production models weeks ago.