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Davide DB

Member Since 30 Nov 2010
Offline Last Active Yesterday, 06:09 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.

#380245 Panasonic LUMIX GH5 for underwater video

Posted by Davide DB on 04 January 2017 - 11:50 PM

My wish list:

6. AutoISO in Full Manual Movie Mode

It's there.

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

#378573 Vimeo Vs Youtube in 2017

Posted by Davide DB on 08 November 2016 - 07:48 AM

İ agree from a to z what you have written here
In fact i stopped my pro account last month with vimeo and than they started to send me offers like 15 percent cheaper.for the same account..may be it was a campaign but i didnt like it that i have been offered cheaper options for something i have been paying for years

The cure is worse than the disease

And once i quit the pro account and became regular member they  deleted some of my movies  as well  (not deleted but they are not visible in my movies anymore   I HOPE)
plus, one of my movies have about  8 000 000 clicks on it but i havent benefit it at all , i always wonder if it was in you tube would i be paid for clicks after a certain amount???

This is the reason why I have to decide before my current subscription expires.

#378429 Deep Macro

Posted by Davide DB on 04 November 2016 - 03:42 AM

Looking my U/W GH4 menu now. I can't say what would be different on the GH3 I'm afraid:
Continuous AF = ON
AF/AE Lock Hold = ON
Shutter AF = ON
Quick AF = OFF
Eye Sensor AF = OFF
Pinpoint AF Time = MID
Direct Focus Area = ON
Focus/Release Priority = FOCUS
MF Assist = Use the AF mode button
MF Guide = ON
So many blummin' focus options on this thing. It does my head in! Took me about 100 dives to find a way of working with it that suited me and I still have to relearn it at the start of trips.

Hahaha. Same here!
I haven't my camera here now but as far as I can remember, except some "exotic" option like "Eye Sensor AF" and "Pinpoint..." I have more or less the same on both GH2 and GH3. (Thanks to Panasonic, if I will upgrade to GH4 I will feel at home, more or less...).

In AFS mode, with my general medium/macro lens (Oly 12-50), I change the size and position of the square focus box a lot while I'm diving, depending what's in front of me, using the 4 cursor buttons on the back and the thumb dial. It's quick to do. Usually I keep the box large and central between encounters to cover whatever might show up. I reset it with the DISP button. With the thumb lever on the housing I operate the AF/AE Lock button which switches between AFS and AFL (see the current mode with the tiny text top right of screen that I definitely need my prescription mask for!). With a macro encounter where I have TIME, I shift and size the yellow box onto the critter's eye (for example) then do a back-button-focus with that lever so it's locked into AFL mode.

Same approach as you. Most of the time I focus with the rear lever/button that I set to AF Lock.

With an encounter where I don't have time, I just start recording in AFS. But then the focus will continue moving, often nasty little micro-shifts, even if it doesn't look like it on your little monitor, so as soon as I can I lock the focus manually by physically moving the rotating focus control to AFS/AFF to MF. You can do that in the middle of at shot (or before) when you know focus is right and it will keep recording. This will usually wobble your camera a little and leave a clear audio trace in your recorded file, which can actually be useful in post-production to know when you locked focus. Also MF mode then displays peaking which is useful.
 With this lens I badly long for a proper manual focus knob that works with peaking. All these fancy features and it's missing that hugely important feature. Crazy really.

Hummm... Of course, GH2 and GH3 doesn't have focus peaking but once I press the shutter release button or movie button (being in AFS) I get a completely different behaviour: the camera acts exactly like being in AFL. It focus while starting th recording and then the focus remain locked. It works exactly like shooting photos. I would kill myself if the focus would continue moving. Is it something peculiar to GH4 or some nasty combination of the above options? IMHO the main culprit would be that


"Continuous AF = ON"


However glad to know that we work in the same way. I remember a good post of Peter on GH4 AF use: http://wetpixel.com/...showtopic=55392



Sounds unusual. I would expect the image to not be sharp all the way across into the corners so check that. Might not be too bad.


Yesterday i was speaking with the Nauticam Italy's representative and he confirmed that it should be good enough.


Few years ago, I mad some test in a pool for fun placing the pana 20mm pancake in the same 4.33" dome. Distance from the glass is grater but the image was tack and sharp. Now the 45mm has an even narrower FOV so I guess it should be better. Maybe you already saw it. I have a small video on Vimeo of those tests:






#378298 Sony and its frequent camera releases: is it positive or negative?

Posted by Davide DB on 31 October 2016 - 02:53 AM

Sadly all of us know how our gear value approaches zero jsut one minute after we swept the card... Being the forum in musings mood, I liked this article:









#378180 Marine Ecotourism - Natural Numbers

Posted by Davide DB on 27 October 2016 - 04:51 AM

It's not mine nor I know the authors but I liked this video so much that i have to share it!


Message couldn't be louder and clearer... Enjoy:


Oceans have always been a source of wealth and numerous civilizations prospered thanks to them, gradually leaving their footprint on the shores. Our ability to extract resources and dump waste has reached unthinkable levels, causing severe impacts. Some communities found an opportunity to use the ocean’s resources in a different way: marine ecotourism. What started as a local economic alternative is today a global industry that generates 50 billion dollars each year, serving more than 120 million tourists. Marine ecotourism is a key piece to ensure that the conservation of natural capital contributes as much or more to human well-being than fisheries. Could the true richness of the oceans lie in something beyond resource extraction?



There's a Spanish language version too.

#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.



#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:




And the latest interview with Atomos CEO:




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.






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


Full press here: