Jump to content

Recommended Posts

Great work! I love the green shot the best. Very nice the whole thing!

Howeikwok:

 

I was looking at your film again and it is really superb. So glad you are taking the time to share things with us. That is some amazing footage!

Share this post


Link to post
Share on other sites

 

George -- UAWB works fine, within a given range of parameters (i.e. clear water, lots of light, 10m or shallower, sun behind your back preferably). I think it's probably the best option on the A7 cameras within those conditions.

 

Here however, most of the shots were below 20m on a cloudy day early in the morning -- in other words, low ambient light, where my Gates GT14 lights were easily able to overpower the ambient light and bring back rich, warm colors to the reef. 5200k is the white balance of the GT14s -- that's why I used it. This type of shooting would absolutely not work without strong video lights. Everything would just be greenish/blue.

 

So.. shoot UAWB in the shallows when there is strong ambient light, and a fixed or AWB with strong video lights when deeper/with less ambient light. I've been experimenting some more with red filters, but have yet to come up with any formula that I find gives acceptable results. Custom white balance underwater always ends up pushing the red channel far too much, leading to a muddy, magenta water column. This sadly happens even when taking a white balance reading off something pink like my hand or a brown patch of coral. It can probably be fixed with post-processing, but I prefer skipping the filter altogether and just relying on video lights at depth.

 

I was in Alor as part of the crossing trip for a new liveaboard. There are a number of land-based resorts in the area. I've generally only heard good things about Le Petite Keppa, but never stayed with them myself.

Well I looked at this again Andrei, and again I am intrigued that the color of the water (water column?) in the background of your video lit shots is so naturally blue. It seems that it is very clear there. I had not thought about setting the color temperature to be the color of the lights. My little Sola 3000s are nowhere near that powerful. It really constrains what type of shot you can take. I will be posting some more from the Raja trip. The water was much cloudier than what is conveyed in your videos. Than you again for all your contributions.

 

GLP

Share this post


Link to post
Share on other sites

Well I looked at this again Andrei, and again I am intrigued that the color of the water (water column?) in the background of your video lit shots is so naturally blue. It seems that it is very clear there. I had not thought about setting the color temperature to be the color of the lights. My little Sola 3000s are nowhere near that powerful. It really constrains what type of shot you can take. I will be posting some more from the Raja trip. The water was much cloudier than what is conveyed in your videos. Than you again for all your contributions.

 

GLP

 

The deep blue of the water column is a combination of things, George. First, water clarity -- we had 20m+ visibility, which definitely helps. Add to that underexposure to bring out more saturated blues, a relatively low fixed 5200k white balance (if you go even lower, like 4800k or 4300k you'll get even richer blues for the water column, but at the expense of a foreground that's too cool unless you shoot with warming filters for your lights). And finally, the Autumn leaves creative style adds punchiness and saturation to the blues (and the reds, and the yellows..)

 

Even with weaker lights you'll be able to achieve a similar result if the ambient illumination is low. Shoot on cloudy days, early morning or late afternoon, and at depth where less ambient light penetrates.

  • Like 1

Share this post


Link to post
Share on other sites

 

The deep blue of the water column is a combination of things, George. First, water clarity -- we had 20m+ visibility, which definitely helps. Add to that underexposure to bring out more saturated blues, a relatively low fixed 5200k white balance (if you go even lower, like 4800k or 4300k you'll get even richer blues for the water column, but at the expense of a foreground that's too cool unless you shoot with warming filters for your lights). And finally, the Autumn leaves creative style adds punchiness and saturation to the blues (and the reds, and the yellows..)

 

Even with weaker lights you'll be able to achieve a similar result if the ambient illumination is low. Shoot on cloudy days, early morning or late afternoon, and at depth where less ambient light penetrates.

Thanks Andrei. I have so much footage from Raja that I may need to start putting it up in pieces rather than edited films. The water color in the background of the shots really differs depending on the clarity, and the light, and I suppose perhaps even the color of the plankton in the water. Many different clips of many different types.

 

I am working with some drone footage the Misool Eco Resort gave me, and will probably work it into the next film. Here is the location of MER from the air:

 

 

Thanks for always contributing to this topic thread in such a helpful fashion!

 

GLP

Share this post


Link to post
Share on other sites

Here is one shot at Dimaniyat islands Oman in November.

Average vis was 10 to 12 meters with lots of suspended particles (July August is a much better season to visit as i was told)

Shot on RX100Mk4 with WWL1 on an Ninja 2 recorder (Pro res 4-2-2 10bit). 2 x Keldan Luna 4x lights. Graded on Davinci Resolve.

Most of the times i was shooting on AWB. Shot on PP 5.

Not super happy with the results but considering the visibility and the actual water colour its not that bad.

Also the original video file looks much better than the one in youtube (need to invest some time in trying to find some good export settings). I ll try to make a short before after video with some of the scenes.

Feel free to comment.

 

 

https://www.youtube.com/watch?v=kF7uLud1yHI

  • Like 1

Share this post


Link to post
Share on other sites

This one is to illustrate the shift in white balance when using AWB (it is shot in an RX100 Mk4)

Depth is around 65m meters. Look at how the whole hue changes from green to bluish when I turn on the lights. Also, strange that in the end of the clip I switch the lights off but the hue remains "blue"

 

https://youtu.be/lI5_yBGl1bU

Share this post


Link to post
Share on other sites

Tha

 

This one is to illustrate the shift in white balance when using AWB (it is shot in an RX100 Mk4)

Depth is around 65m meters. Look at how the whole hue changes from green to bluish when I turn on the lights. Also, strange that in the end of the clip I switch the lights off but the hue remains "blue"

 

https://youtu.be/lI5_yBGl1bU

 

Thanks for posting Lionfi2s. I have noticed a similar thing over and over with the a7s II UAWB. It often happens in the middle of great clip, and I am forced to choose between which version I like better. Did not know a similar thing was happening with this camera.

Share this post


Link to post
Share on other sites

Tha

 

 

Thanks for posting Lionfi2s. I have noticed a similar thing over and over with the a7s II UAWB. It often happens in the middle of great clip, and I am forced to choose between which version I like better. Did not know a similar thing was happening with this camera.

They way it looks i think the best solution is try to adapt to it rather than try to defeat it.

So for me the workflow it will be:

-Try to thing about it and how it will affect the shot before pulling the trigger and adjust my shooting angle accordingly.

-Try to find a good custom white balance setting to use when needed together with my lights

-Experiment a bit with the PP colour settings to see if i manage to get any good results

 

Luckily i am recording in 10 bit 422 in a Ninja 2 so that give me a bit more room for grading as more colour information is available.

 

One step at a time!

Share this post


Link to post
Share on other sites

They way it looks i think the best solution is try to adapt to it rather than try to defeat it.

So for me the workflow it will be:

-Try to thing about it and how it will affect the shot before pulling the trigger and adjust my shooting angle accordingly.

-Try to find a good custom white balance setting to use when needed together with my lights

-Experiment a bit with the PP colour settings to see if i manage to get any good results

 

Luckily i am recording in 10 bit 422 in a Ninja 2 so that give me a bit more room for grading as more colour information is available.

 

One step at a time!

thanks Lion:

 

I have decided to ignore it, use the UAWB, which works pretty well with lights, and just live with the color shifts for now. Andrei was setting his white balance at 5600K, because that is the color of his lights, but his lights are much more powerful than mine, and light up more of the frame. All I know is that the custom white balance solutions I tried did not work. If you get a method under than UAWB that works, please let us all know. thanks

Share this post


Link to post
Share on other sites

I have started to do "bite sized" films in going through my Raja footage. Otherwise I would be overwhelmed. I will make medium sized and large as well, but those take time and it takes much less time to edit a film on a specific subject.

 

I am giving people here the link of a film about a damselfish with a remarkable behavior. It is Dascyllus reticulatus. It lives in branching coral, including spectacular specimens of table top coral. Here, I think the species is Acropora pulchra, but I may be wrong about that one. I filmed some Dascyllus in the Misool area in a couple of different locations.

 

How many of you have seen this wonderful species?

 

Edited by GeoPaul7
  • Like 1

Share this post


Link to post
Share on other sites

My first contact with macro video. Sony FE 90mm GM OSS...

 

Very nice Alfredo. I like your focus and the subjects are extraordinary!

Share this post


Link to post
Share on other sites

I wish I had the money for an a7s model but unfortunately shooting with just a a7 mk ii underwater at the moment, still having a lot of the same issues with WB etc though but have found that if I shoot in the auto underwater mode and then push right to get into the kelvin setting of it and adjust it based on depth adding more magenta it seem's too come out the best, still not great though.

 

I then usually try to colour correct it in premiere which does an alright job depending on the scene... yet to figure out davinci properly though which will take some learning.

  • Like 2

Share this post


Link to post
Share on other sites

Last work at Red Sea...

 

https://vimeo.com/207717423

 

 

Thanks for posting Alfredo! As I mentioned on my comment on the Vimeo posting, I very much like the way the video lights illuminated the golden fish in the foreground. Nice work!

  • Like 1

Share this post


Link to post
Share on other sites

Some footage cut together from this morning's dive on Kal's Dream in Alor, Indonesia. Shot on a Sony A7RII in fixed white balance (5200k) with a pair of lights. Manual exposure, no picture profile, autumn leaves creative style.

 

 

Arguably a bit too saturated.. but that can easily be dialed down in post.

 

Beautiful video. Love the exposure and the perfect blue background. I guess we are able to get rid of the purple background that initiated this post :) Well done.

Share this post


Link to post
Share on other sites

I have started to do "bite sized" films in going through my Raja footage. Otherwise I would be overwhelmed. I will make medium sized and large as well, but those take time and it takes much less time to edit a film on a specific subject.

 

I am giving people here the link of a film about a damselfish with a remarkable behavior. It is Dascyllus reticulatus. It lives in branching coral, including spectacular specimens of table top coral. Here, I think the species is Acropora pulchra, but I may be wrong about that one. I filmed some Dascyllus in the Misool area in a couple of different locations.

 

How many of you have seen this wonderful species?

 

 

Beautiful video and observation. I love watching the Dascyllus especially when they hide in the branching corals. They look funny.

  • Like 1

Share this post


Link to post
Share on other sites

Sponsors

Advertisements



×
×
  • Create New...