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bubffm

Member Since 26 Sep 2015
Offline Last Active Today, 11:38 AM
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Posts I've Made

In Topic: HDR Underwater

Yesterday, 03:50 AM

Its related to the gamma curve that HLG uses. This is probably a good read:

http://www.xdcam-use...to-be-used-for/

Not just theory, try to grade HLG and youll see it fall apart quickly (as observd on my HLG capable Loewe TV), certainly much quicker than Cinelike D (my favourite for underwater) or LOG.

But of course if you dont work on your footage in post, HLG may work for you. Even correctly WBd, I always have quite a few things I want to improve in post.

Id also challenge your point that UW stuff is closer to broadcast than to studio. The very inventors of HLG (BBC) have massively graded their BP2 footage in post studio, not rolled it out as shot.

In Topic: HDR Underwater

Yesterday, 02:19 AM

I suppose using a set of 3 LUTs to accomplish a few more colours is out of reach for your normal underwater production and you might as well use HLG that requires no LUTs
 

 

Don't forget that HLG is a delivery format! It is build to be used/consumed as-is (news-delivery, broadcast etc..) and as soon as you start grading/correcting it, it will fall apart pretty quickly. Thats what anyone will tell you, and I've actually tried it out myself.

So if you are likely to have post-work to do (as is almost always the case for underwater footage), than VLOG is the better format as it behaves much better - at least in 10bit.


In Topic: Panasonic GH5 anybody using 400 Mbps All-Intra?

14 August 2018 - 03:47 AM

Actually I am not the only one not seeing much difference on the All-Intra.  If you look into some youtube reviews, there are quite a few that conclude the same.  I thought with the more complicated environment in the water, particles etc.. the difference might be more obvious. But it really isnt.

 

On 150 (GH5) vs 100Mbps (AX100/700) Mbps: Spending more time comparing the two, the Sony files hold up just as good as the Panasonic, if not better during heavy color correction. Of course I never had the two cams in the same spot at the same time, so really hard to be totally conclusive, but if I look at comparative scenes in terms of visibility, depths, light conditions etc. I would have thought the Panasonic files would come out better with more latItude.  In that respect my expectations had been a bit higher.


In Topic: Panasonic GH5 anybody using 400 Mbps All-Intra?

13 August 2018 - 11:43 PM

For 400Mbps I use the SD cards from Angelbird, a Tech-Firm from Austria. They are rated the best. I also have one Sandisk ExtremPro rated at 300MB/s which also works perfectly.

 

Both are pretty expensive...

 

On Motion: Thats what I tested, WA schooling fish. I really struggle to see a difference. I guess still worth having those cards. One day you may get to record ProRes RAW with them.  I cant stop dreaming....


In Topic: Panasonic GH5 anybody using 400 Mbps All-Intra?

13 August 2018 - 12:34 PM

>>Have you tried 400 all-i with cinelike D?

 

Yes, the difference is not material. At 150Mbps the files hold up just as well.