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Who is excited about Blackmagic Pocket Cinema 4K?

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#21 bubffm


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Posted 14 April 2018 - 05:55 AM

I believe RED cameras has fan running to cool as well. Yet Nauticam can make housing for them. We shall see.

I dont think heat will be biggest isuue. If you use an Alu-housing you effectively get watercooling underwater.

Edited by bubffm, 14 April 2018 - 05:56 AM.

#22 TaxiDiver14


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Posted 14 April 2018 - 08:48 AM

Not everything good on land is good underwater...

#23 Walt Stearns

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Posted 14 April 2018 - 12:45 PM

All Red 4 to 8k cameras are fan cooled as a necessity due the heat that is generated by the processors when shooting 4k, but that has not stopped the pros from using them underwater. Plus, aluminum housing work as a bit of a heat sink in dissipating the heat generated by the camera. 


Seeing the Black Magic camera being fan cooled as well should be a good thing for a camera like this to handle longer run times and consecutive shooting than non fan cooled 4k cameras. The one downside, considering that it is hard to have a camera fan cooled and weather sealed at the same time, with a fan cooled system just a few drops in the right place could spell serious trouble.

#24 Atobit


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Posted 17 April 2018 - 10:37 PM

Just more thought on this subject:

  • With one single LP-E6 battery, the operation will likely to be short as you have to power the screen and the camera while recording. I guess max 30~40mins. So you will need add a second or a more powerful battery.
  • Then if you want to record CDNG raw uncompressed (to take full advantage of the camera), file size is about 500GB/25mins, so for a dive you’ll need a least a 512GB CF card that cost $1,000US minimum or use an external USB-C SSD.

This assuming Nauticam will offer the possibility to put a larger battery capacity and an USB-C SSD aside from the BMCC 4K camera. The housing is not going to be as cheap as the camera.


About recording format, if BM integrate the ProRes Raw format, recording time will be about 0.8GB/minute or so, so still need large capacity memory support, forget the SD cards.

Also be prepare to buy additional storage for your editing and backup. I can image that for a few days dives trip you will need quite some Tera Bytes of storage capacity.


So at this moment a GH5/S, with the future Atomos Ninja V recorder eventually (for ProRes format), still seems to be the best option.


Too bad because at this price point the BMCC 4K camera is a no brainer.

#25 thetrickster


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Posted 17 April 2018 - 11:17 PM

At first, like everyone (I think) I saw the specs, the price and thought..whoa! Makes my recent GH5s purchase very expensive (but I still got it for a super low price, so can't complain...)


But here and on other forums I visit, people are starting to see the drawbacks of the battery, recording formats and the additional accessories you need to get it up and running.


Underwater, we have the issues of:
1. Battery life (only real option is USB based pack inside housing, like the A7 but means bigger housing)
2. Screen position
3. Control access
4. Heat (so might need fans, then an increase in housing size to cope with additional hardware and NPF battery)


As to whether or not it will get ProResRAW, that will be complicated issue, as its a licensing issue, only DJI and Atomos (I believe) have acquired ProResRAW licensing for their devices at the moment. So if they managed to get it on there, it will probably be a V-LOG-L type activation, or back to base upgrade as the licensing is per device.


Looking into the future, I can say that my 'next' camera (whenever that will be) will have to have ProResRAW, to make me wanna upgrade, it looks an amazing advancement in the < $5000 category.

Regards, Richard


Camera Rig: Nauticam Lumix GH5/GH5s, 14-42mm II, WWL-1, Atomos Inferno, 48,000lm of artificial sun.


#26 kc_moses


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Posted 18 April 2018 - 04:06 AM

The housing is not going to be as cheap as the camera.


No housing is going to be as cheap as the camera unless they're made out of polycarbonate. It's still too soon to speculate the BMCC 4K in the field practical use. The camera can be charged through the USB-C, so depends on how its wiring is, you never know there could be a way to power it through USB-C. As for file size, I dove with someone with Canon 1DX II, with 4K 60fps, he can only shoot 25 minutes of stuffs before the card fill up. Many of this "limitation" is really depend on personal style. For most dive, I don't shoot more than 30 minutes of footage (with each clip is around 10-20 seconds). If the sensor perform as good as GH5S, it could be a good compromise for almost 50% off the price of the GH5S.

Edited by kc_moses, 18 April 2018 - 04:07 AM.

#27 kkfok


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Posted 18 April 2018 - 04:31 AM

Not everything good on land is good underwater...

I agree, after my bad experience with FS100 (unusable MWB underwater) and GH2 (color banding with ambient lighting), I would rather wait for real examples before pulling the trigger.