WOW, Davide..........AWESOME.
Agree with Nick, best GH2 underwater and one of the good DLSR wreck video I have seen. Me has not seen as much as Nick for sure.
80+ meters with such good visibility and it has that eerie deep blue water feel, very very nice.
With good artificial light, the GH2 shows great detail up close, just like your previous wreck video....beautiful.
I downloaded the original near 900MB. That scene 4:17 to 04:17 panning, based on 20 mbps data rate I am getting, its has mild stutter which I will also get on a bit faster panning scene, if I render a Sony MTS 28 mbps to MP4 at variable bit rate of 24 mbps or CBR less than 24 mbps. I think panning need high bit rate. Same mild stutter you can see at 0:06 to 0:12 animation. In your raw video I am sure you do not get that mild stuttering.
That 5:12 main* banding ( *Nick called the
band between blue and pale turquoise ) I think is hard to avoid if the camera process image the way it is as you said being over exposed. The 05:15-05:16 smaller multiple banding lines is from compression artifacts rendering for Vimeo I am sure.
Anyway, 05:12 to 05:15 sunlight being so close to a black BCD + black wetsuit diver in dark blue water .........is a challenge to any camera, since you place the diver as priority . 05:13 you can see the right side white tank of the diver is already blown out too, the stainless steel band almost melting into the white tank. If you are not on auto AE for that footage, I would choose full auto exposure here and have the diver more in AE zone , rather middle a bit and spray the diver with powerful lights and play with EV compensation a bit, if sun ball still strong.
Overall the video is impressive and more so while doing it at 80+ meters. Two thumbs up. I can make comments but I wont be able to make a video as nice as yours he he he.
Here is a fun test at 12 & 5 meters depth , over exposed on purpose to see sun ball spread. First 2 screen captures at 12 meters with Urpro Cyan installed and that filter will reduce exposure by one F stop easy.
Below two is at 5 meters only, no Cyan filter installed.
All on RX100 which can max out F11 only.
.
I was trying to see how depth influence sun ball size and eventually that banding or sudden intensity jump.
Notice at 12 meters, when over exposed , the sun ball outer perimeter gets bigger.......... due to depth I suppose. The sun ball core is not big though.
Unless I can stage the scene properly, if sun ball is involved I would go full auto he he he. ( this forum smiley doesn't work on my Google Chrome )
Your kind of video is not something one can staged easily, its more of come-what-may documentary style and that is hard to get all perfect exposure.
All done in 1 dive I am sure , that is very very respectable video. Reef sight-seeing type video is much easier than your kind of video and no deco to worry. So I am impressed with your video and you being so humble about it.
Keep the video coming David and thanks for sharing.
.
