A wonderful weekend between the Gulf of Naples and Sorrento with the sight of the Mount Vesuvius above us.
Filmed on three dives:
- Scoglio del Vervece, Massa Lubrense, Naples;
- Isca and Palluscello di Isca, Nerano, Naples.
Unfortunately underwater viz was bad with a annoying current and particles. I couldn't avoid a lot of backscatter but, who cares! I had a great time diving, filming and.. editing.
Shot on a Panasonic GH2 + Lumix 7-14mm loaded with Nick Driftwood's MOON T7 settings; Nauticam Housing, 2x Keldan Luna 8 CRI lights on camera and 2x FIX Aquavolt3500 lights on model.
Music track: "The Time To Run" by Dexter Britain, licensed through The Music Bed: goo.gl/2QHRKt
It means that there is not a direct mechanical connection between the focus control and whatever lens elements move to focus the image on the sensor. Instead the control tells the camera's internal controller and motors to move the lens elements.
The issue of autofocus with the 4:3 cameras is that is is slow and sloppy however considering that the 7-14 has a minimum aperture of f/4 and the camera a 2x crop factor you can focus the camera on land at 3 feet, lock focus, jump in the water and you should have all in focus from 1.5 feet to infinity.
If instead you are shooting something closer or you zoom you have a problem and you need the camera to focus this is where manual focus is useful as autofocus as mentioned before is .....not that good
I do not agree here,
With my beloved old GH2 autofocus is fast as hell with 7-14mm. I tested hundred of times in really challenging conditions. IGH3 autofocus si still better than GH2.
On video you have to set spot focus, not multi point.
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: