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Davide DB

Member Since 30 Nov 2010
Offline Last Active Sep 22 2016 11:53 PM
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#377319 Panasonic LUMIX GH5 for underwater video

Posted by Davide DB on 22 September 2016 - 09:38 PM

Both would be welcome.

 

I could have sworn I read someone on here say that the 4:2:2 10-bit in-camera will not be for the full 4k 60p. Must have dreamed it or read it elsewhere. 

 

It's on the original Pana press release linked above.

 

Panasonic today announced that it has developed a new Digital Single Lens Mirrorless (DSLM) Camera LUMIX GH5 that is capable of recording smooth, high-precision 4K 60p/50p and faithful 4:2:2 10-bit 4K video*3 for the first time in the world*1.

 

 

*3 In 4K/30p, 25p, 24p, 23.98p video recording.




#377228 Panasonic LUMIX GH5 for underwater video

Posted by Davide DB on 20 September 2016 - 11:48 AM

I heard the body is slightly different, so I guess we would need to get a brand new housing....

 

 

Same housing as GH3/GH4 happens once in a blue moon...




#377196 New Olympus camera and new Panasonic lens

Posted by Davide DB on 19 September 2016 - 11:39 AM

Actually I would kill for a moderate fisheye zoom like the tokina.

Even for a fast WA rectilinear lens...


#377077 Canon 5D Mark IV.....

Posted by Davide DB on 16 September 2016 - 12:14 AM

No 60p 4k so I'm not interested.

 

However I could imagine myself buying a used 5Dmk2 or 5D mk3 wide-angle rig one day, just for the lovely colour rendition.

 

http://www.eoshd.com...the-difference/




#377058 Canon 5D Mark IV.....

Posted by Davide DB on 15 September 2016 - 07:32 AM

there are two articles that are worth to read about this camera and current Canon policy on VidDSRL:

 

http://www.newsshoot...-of-dslr-video/

 

And the latest interview with Atomos CEO:

 

http://www.newsshoot...non-5d-mark-iv/

 

Nevertheless Canon will sell a bunch of them just because it has the capacity to exercise the strongest lock-in in this market...




#377056 7.5mm F2.0 Laowa lens for MFT cameras

Posted by Davide DB on 15 September 2016 - 07:17 AM

Is this the prime lens we were waiting for as alternative to 7-14mm?

Unfortunately is a manual lens but it shouldn't be a problem with this FOW.

 

791bc13a012a3d1c5c93ba606d1e70.jpg

 

 

 

  • 110 degrees FOV
  • 12cm minimum focusing distance
  • manual focus
  • 49mm filter
  • 50x55mm
  • 170g weight only

 

Full press here:

 

http://www.personal-.../comment/223237

 

 

 




#375322 Out there #3: La Secchetella

Posted by Davide DB on 19 July 2016 - 04:40 AM

My latest underwater effort and the last job for my beloved Lumix GH2 :)

 

Out there, a few hundred meters away from the mooring buoys, nearby walls, reefs and wrecks there is a unknown world waiting to be (re) discovered.

The "Secchetella" or "Secchitiello" is a shoal located in the so called "Mouths of Capri", the channel between Capri Island and the mainland ( goo.gl/maps/QCha5zKrpa82). The shoal has a circular shape ranging from 50 meters to over 70 meters on the west side. Huge sponges and lush coralligenous habitats show the presence of strong currents rich of plancton. Despite the shoal is well known, the distance and depth have kept this place somehow protected. Today's tools as trimix, scooters and rebreathers allow us to appreciate the high biodiversity of this site.

 

We hope this short documentary will help understand the importance of protecting deep underwater heritages like these.

 




#371687 The first compatible housing for Sony A6300 . Easydive from Italy

Posted by Davide DB on 19 March 2016 - 06:10 AM

Leo holding are still compatible with old but unique Igloo/Underwave cristal ports.

Maybe some seasoned photographer still remember these gems

http://www.fotoevita.net/igloo.htm

They have still high prices on used gear market


#371686 The first compatible housing for Sony A6300 . Easydive from Italy

Posted by Davide DB on 19 March 2016 - 06:03 AM

http://www.underwate....aspx?mid=28564

 

This is a photo gallery of my buddy m Marco Bartolomucci. He has been using an old Leo housing with Nikon gear for ten years. 

He went from a D200, a D300 to a D7100. Same housing and same ports since ten years.




#368132 OMD EM-1 in Nauticam housing with Nauty Viewfinder - viewing pics though LCD...

Posted by Davide DB on 09 December 2015 - 10:08 PM

I guess that like panasonic camera near the viewfinder you have a proximity sensor. This is the reason because you cannot use viewfinder while the camera is in the housing. You should have a menu choice to enable/disable it. Along eith the above suggestions you can do whatever you like.
Bye


#368131 OMD EM-1 in Nauticam housing with Nauty Viewfinder - viewing pics though LCD...

Posted by Davide DB on 09 December 2015 - 10:08 PM

I guess that like panasonic camera near the viewfinder you have a proximity sensor. This is the reason because you cannot use viewfinder while the camera is in the housing. You should have a menu choice to enable/disable it. Along eith the above suggestions you can do whatever you like.
Bye


#366312 Out There #2: The Crack

Posted by Davide DB on 20 October 2015 - 12:44 AM

A deep dive in a strange deep place to test a prototipe of a couple of 12K lumen video lights.

Video nothing special, just a proof of concept for an upcoming project.

 

 

Out there, a few hundreds of meters apart from mooring buoys, nearby walls, reefs and wrecks there is a unknown world waiting to be (re) discovered. (https://goo.gl/P4yc1E)

 

Is the case of this huge underwater crack in Giannutri island, discovered by chance during a scooter ride on the lunar-like seabed. Simone Nicolini has told me so much about this place that we jokingly nickname it "Nicolini's Abyss". Later I discovered that "The Crack" was well known to other seasoned tech divers but nobody was able to give me a convincing description: depth, lack of reference points, low visibility played an important role giving this place an aura of mystery.
Hence the idea with Simone to film and document The Crack. Unfortunately we dove it just once in a low viz.

 

After seeing the clips my son is absolutely convinced that The Crack is no less than Godzilla's lair but geologists have a different opinion...

 

The Crack is located in this position: https://goo.gl/maps/ij2vbcjFfLv

 

Typically, moving out to sea, the island seabed slopes away up to 30/35 meters when a cliff side drops vertically to 50/60 meters. The seabed slopes away again to 70/90 meters where rock masses form small cliffs. Further on it gently slopes off to 100 meters and beyond.
The Crack has a rippling profile which follow the shape of a rock mass at about 95 meters and beyond. Its orientation is north-south, approximately parallel to the island west coast. In some points the crevice is just few centimeters wide while in a couple of points it is over one meter wide allowing a diver to carefully explore it inside. It looks like a tight cave follows the crack profile on the bottom.

P.S.
We didn't find any dragon-tooth but my son didn't change his opinion :)

 

 




#365763 Panasonic GH4 advanced settings

Posted by Davide DB on 01 October 2015 - 04:34 AM

While I do not know which camera (Canon or Sony) was used in the natural light shallow shots, CC applied seems very close to the Dustin video mentioned above. Great video!

 




#365760 Reflecting problem

Posted by Davide DB on 01 October 2015 - 12:40 AM

Rule #1: tape all writings on the lens :)

 

Someone just write them with a black marker. I prefer covering them with removable tape and then write the tape with the marker.

So if one day I will sell my lens it will be intact.

 

PS

I used a Sony 10-18mm lens and it's worse than that: all the front ring is silver glossy!!!




#365437 Panasonic GH4 advanced settings

Posted by Davide DB on 21 September 2015 - 06:32 AM

The cameras may be close with daylight WB topside, but I think it's in underwater manual white balance that the Canon cameras excel. I haven't seen anyone nail an underwater wide angle look with a GH* that is as nice as nicely done Canon 5D footage. But I'd still like to believe it's possible to get close with the right techniques in white balance and post production.

 

IMHO color matching camera on land is almost useless. Once underwater, where the ambient light is highly filtered, camera WB algorithm could be severely screwed up.

 

I remember Panasonic TM700 and TM900 were considered the best consumer camcorders on land. Amazing colors and definition. 

Someone tried to bring them underwater with some all purpose housings... Results were terrible: no matter which WB hey were using, water was green green green.

It was like the camera firmware or maybe sensor was completely deceived from light spectrum underwater.