Posted by Davide DB
on 06 February 2014 - 02:06 AM
Have fun Davide...
Hi SPP, glad you liked my test but.. you are ovverating me
At the beginning I installed GoPro Studio to run some test with protune and cineform files. I loaded both on the timeline. My project was using Canopus HQX codec (4:2:2 10 bit as Cineform) which Edius transcode in background while editing. I tried to CC both and I found no differences between them. Cineform files where huge and lighter to edit but once the HQX files were ready no difference at all.
I'm a beginner so maybe I missed something. If I can I try to edit and CC in the same editor.
I found that the best filter/tool for underwater clips is the crominance mask: it let you pick up easily one range of color (e.g. all the water) without touching other part. After that you can apply whatever filter you like to this selection. A simple three wheel color correction to remove that water green cast.
When later I saw the result on my TV I realized I forgot to apply an Unsharp mask. But I was too lazy to reopen the project Anyway you are correct: current edit is way too soft.
I have a DELL U2412M monitor and I'm realizing there is a lot of difference between what I see on my monitor and other TV/computers. It's becoming a problem...
I also wonder if there is any advantages with a fast lens like that oly 12mm f2.0 ? I get more light in but Will it be difficult whith a open aperture when it comes to get the image in focus because the short depth of field ? If I am forced to use a smaller aperture like 6.3 for more dof to get sharp images then its no use/advantage whit a fast lens underwater.Whats your experienses.
Usually I set the aperture of my 7-14mm to F5. It's sharp enough for my taste but it mantain a useful DOF. This tool it's very useful:
Posted by Davide DB
on 07 November 2013 - 03:52 AM
Beautiful video indeed.
Yesterday I was seeing it on my 46" smart-tv via the vimeo app and I noticed a lot of macro-bloks/pixelation in the low lights. Maybe you should reload with a higher bitrate. In some video vimeo encoding strives to renders low light details.
Two months ago I got a minor leak on my Nauticam GH2 housing while filming at 80+ meters.
Miraculously I managed to avoid soaking my camera and lens: at the end of the dive I had an half glass of water into the dome but everything was perfectly dry.
Opening the housing I did not find any clear evidence of fault: no hair or dirt on the o-ring so I returned the housing and 7-24 dome at Nauticam Italy (it is still under warranty).
Housing and dome was sent to Nauticam HK, pressure tested and inspected. It was ok so it was definitively my fault
Anyway given that one year of intense use was passed already, they completely disassembled it, serviced and returned to me WITHOUT ANY FEE (not even shipping cost).
I was far from home so I sent housing and port without boxes. I received them with brand new boxes and it was so shining (it had again the plastic film on the display) that I had to check its s/n to be sure it was mine...
Davide, the point of forums is to discuss the realms of possibilities and nuances that may not be considered. Even Ryan started thinking about the Ultra Prime 6mm as a possibility and I'm sure if he saw the Century 6mm with adapter, he'll probably be convinced. Now is it practical to get T stop, focus gears etc on a small housing? Most probably not, but hey neither is getting a RAW or even a Pro Res camera, even @ under $1k.
Going back to the 7-14 Lumix, I remembered it showed low distortion because it is software corrected in stills. Were your tests using still software that is corrected or video that's uncorrected? My notes say CA but also barrel distortion @ 7-10mm.
The point of forums should be to let users to take an informed decision. The paradox on the interweb is that it's full of people speaking of what sex an angel is. There's space for everything of course, but when the noise increase (nuances that may not be considered) forums like this loose sense.
It happens dozen of times. Every time you google for buying a smartphone, a camera, a car... you will find someone complaining about the most exotic nuances.
MFT is probably the most versatile mount/size as today. It's not just chance that it's the second BM camera designed with this mount. You can mount nearly everything. I used for fun on my GH2 the most exotic lenses with cheap adapters.
The problem is that 90% of camera manufacturers and users don't even suspect that you can bring a camera underwater. Hence 90% of housings have ports for standard or most common lenses. You have some exception like the latest Red camera housings (but, again, we are speaking of a complete setup in excess of 30K euro).
My bet on upcoming BMPCC housings is that you will have something like Nauticam mirrorless line: a simple yet bulletproof design with standard acrylic ports for current m43 lenses. They already have everything ready. Hence forget about Tokina 11-16 or other wonderful cinema lenses. Nobody will design a custom ring adapter for manual focus or zoom for a 995$ camera.... We will see. Of course I hope to loose my bet.
BTW 7-14mm is one of the best wide angle lens out there. Tack sharp with minimum distortion and CA in real word use. Just search for it on Vimeo. I forgot that here we are filming pool tiles alll the day
Distortion is corrected in camera and it works perfectly with video too, also on Olympus bodies.
AFAIK the BMPCC has an active MFT mount so it should work. Actually a lot of people have a lot of questions on "active mount" definition.
@Timccr: you have a lot of amazing spots just near you. If you are a wreck lover i suggest to not miss the VALFIORITA near Messina: better than the THISTLEGORM.
I know that wide angle shots will likey be a problem with the BMPCC crop factor but again, sadly nobody cares fo underwater filming while designing a camera
I hope to see some BMPCC sample with the 7-14mm soon. This is what you can expect from the 7-14 on MFT mount:
Nauticam is the worlds premier manufacturer of underwater camera housings and accessories. Visit the Nauticam booth to see housings for the Canon 1DC, Panasonic GH3, RED EPIC and SCARLET, SmallHD DP4 and more. Nauticam - Innovation Underwater
Hi I haven't a photo of the 7-14 cover. But it's just a heavy plastic dish... If I recall it correctly the diameter should be 160 mm. People at the kitchenware store were looking at me suspiciously when they saw me hanging around the shelves with a self-retracting tape measure
About the stickers, there was a misundestanding, I tried to crack a joke but English it's not my mother tongue For stickers I meant decals. The first time I brought my housing with the custom cover, people told me "hey, have you a coffee can on you dome?" After that I applied a couple of Nauticam and Scubapro decals on it hiding its origin
Regarding 8mm vs 7-14mm...
They are two completely different lens. The 8mm it's really extreme. it's very difficult or nearly impossible to cover the entire FOV with your lights. (I have a couple of FIX 3500) and I strive to perfectly light all the scene. Moreover it's difficult to judge from the tiny display. I gave away two SOLA 2000 for this reason. The aperture is much less than the FIX. Probably this lens fits better for photography or video shots in ambient light. I used this lens for my video on the DESPREZ wreck and I failed to correctly position my lights on most of the shots. The 7-14mm is really a lovely lens. 110° at 7mm are perfect for nearly all wide scenes and at 14mm you can shot some detail or some fish. I wish it was f2.8
yes, flow motion v2 looks like nice hack, it is quite popular I would say. I got 64gb 90mb/s SD card, so thats also not a problem.
Yeah, thats what I want to confirm - Manual Mode, HBR, 24p cinema.
Magic filter with lights ? I used them before, when I didnt have lights, but now I dont think I need magic filter.
Can you also tell me your settings for FN buttons?
I have the same setup as you plus 8mm fisheye and dome and Fix Aquavolt 3500. I do not use FN.
Fully manual, FM 2.02 Hack in 24p Cinema Mode. On extremely detailed and well lit subjects there is some difference between HBR and 24p Cinema mode. I prefer the 24p cinema mode but maybe I'm just a pixel peeper
Do not use AFC but exclusively AFS. I use a lot the AF Lock toggle. I found that center weighted AF (the one with the [*] symbol) is absolutely better that multi point AF. I ruined several shots with that. Expecially with the 8mm fisheye with a very narrow aperture (> f8) the lens can focus dust or shadows on the dome. So IMHO the way to go is:
- Center weighted AF; - Narrow aperture >= f8 trying to be hyperfocal; - Prior of the shot you focus and lock with the AF lock button; - you start recording;
If light it's not enough to get a correct exposure, bite the bullet and increase ISO I got decent shots (for my taste) up to 1600. Actually noise perception is a personal taste.
Last but not the least, remember that GH2 has something like a bug on ISO settings. An ISO setting of 320, 640, or 1250 may result in increased noise depending on the camera's previous setting. To avoid this, switch the camera to the ISO setting 1/3 stop higher, and then back down. (i.e., 400 to 320, or 800 to 640, or 1600 to 1250). If you turn the camera off while in ISO 320, 640, or 1250, you must repeat the ISO switching after turning the camera back on to avoid higher noise. Set the film mode to Standard with -1, -2, -2, -2. Adjust contrast and saturation as necessary.
Posted by Davide DB
on 20 November 2012 - 11:15 PM
My latest effort underwater.
There's no banding in the original footage
The Steam Ship was built and launched as ROSOLINO ORLANDO in 1919 by the "Società Esercizio Bacini of Riva Trigoso" for the "Industrie Navali Società Anonima" (INSA) of Genoa. In 1923 she was renamed VALSAVOIA.
She was 5.733 tsl with a length x breadth of 117.60 x 15.70 m.
The SS VALSAVOIA, was torpedoed and sunk by HMS SAFARI on February 2nd 1943, while traveling from Naples to Palermo,10 miles West of Capri island near Positano.
The wreck lies under 85m/ 278ft of water in upward position.
Shot on a Panasonic GH2 + Lumix 7-14mm loaded with Lee Powell’s Flow Motion 2.02 settings; Nauticam Housing, 2x FIX Aquavolt3500 lights and 2x 50W HID Yellow Diving.
Music: Dandi + Mattanza + Bologna from the soundtrack of "Romanzo Criminale" by Paolo Buonvino.
Edited on Edius 6.07 + Canopus Imaginate 2 dor the animated chart
The lake of Posta Fibreno, is located by the village of Posta Fibreno, a small council of the Frosinone area in the Lazio Region. The lake is in a karstic terrain and rich in underwater springs.
Waiting for clearer water in winter time I edited some test shots filmed this summer. In this period, warmer, slower moving waters increase the production of algae and allow it to accumulate in large blobs covering most of lake vegetation. Underwater shots are almost completely ruined by this mucilage, that constantly sticks to the port. In the opening shots I got the front lens writing caught on the port. I have to put some black tape on it. Shame on me!
We will be back in water in January with a gin clear water.
For now, just a taste of this wonderful place.
Shot on a Panasonic GH2 + Lumix 8mm & 7-14mm loaded with Lee Powell’s Flow Motion 2.02 settings; Nauticam Housing.