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r4e

Member Since 16 Jan 2011
Offline Last Active Yesterday, 06:30 PM
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Topics I've Started

Best Way to WB Canon 5DIII for Video with Ambient Light?

02 January 2014 - 08:55 AM

I am extremely pleased when shooting stills in RAW and white-balancing the pictures afterwards. For this purpose a rough white balance for the live view preview is sufficient.

 

However, I am not so pleased about setting the white-balance for video shooting purposes on the Canon 5DIII. Apart from the possibility of using Magic Lantern and shooting RAW video, you need to tune the WB before shooting video. For wide angle scenery shots I prefer to shoot in ambient light only (except in darkness) instead of using artificial light. For example, at 25-30 meter blue water depth, it is possible to achieve good WB with stills (which proves that the camera sensor is capable of this), but I have been having difficulty in achieving similar quality in video.

 

I have tried the different WB modes as well as dialling in the Kelvins. I have also tried the custom white balance with a white bag or white-ish sand and further fine-tuning by the WB Shift underwater. It seems difficult to not lose the reds and yellows whilst keeping the water column blue. I am wondering if I am doing something wrong??

 

I also gave a try with the Canon picture style editor with the idea of creating personal presets for different depths. As reference pictures I used various (still) RAW pictures shot at 25-30 meters. Whilst these pictures were easy to WB adjust in the Canon Digital Photo Proferssional software, there was not sufficient latitude available in the picture style editor. I am now wondering whether there are similar limits for white-balancing video/the live view screen?

 

What have your experiences been in shooting video with ambient light only at different depths?

 

Or should I bite the bullet and go ML raw video with all the additional expenses?


Video - Ordinskaya Caves near Ural mountains

22 October 2013 - 01:56 PM

Here is the first episode of cave diving footage in Orda. Since I'll be working on the next episodes sooner or later, any comments and feedback will be appreciated. And yes, I am aware of the butt issue...next episodes will show some other angles as well...

 

Please feel free to view in full screen mode.

 

 

 


Canon 1DC and 4K Video

10 April 2013 - 10:28 PM

In addition to RED and C500, Canon 1DC is the only 4K video capable camera with a u/w housing available now.

If you sum up the total cost of camera, housing and proper video monitor, the total price is about half of a RED or C500 system.

 

On vimeo there are some excellent examples of downsampling, cropping and/or panning this 1DC 4K stuff in the edit to produce HD video. From the samples, it would seem that downsampling from 4K to HD, would maximize detail and clarity in HD video. Plus you have the capability of doing IS in the edit without getting problems with the edges.

 

For a long time, I have been wondering what would be the best way to improve noticeably image quality upon my trusted Sony MC50E. I am expecting improvements in one or more areas such as: green and blue water WB, dynamic range, gradability, detail in image, 4K, optical quality, pleasing colours, noise and low-light sensitivity. I was initially excited about the Sony FS100/700, but reports about difficulties with WB have made me hesitate and I have not heard any news on that front. I have dropped the 5D3 away from my list, because of its soft image - yes I know you can improve it in the edit, but... And besides, the video image quality of 5D3 or 1DX is not that much better than my MC50 or 1DIV. 

 

The image quality of a Canon C100 seems perfect for me, eventhough it is only 8bit. I have approached a couple of housing manufacturers, but, they have not yet shown any interest in this camera. With the new BM announcements, they might flock (hopefully) towards BM. But getting any of the announced BM cameras, and a housing as well, might take anything between 6-12 months or more? If the dates for both of these would actually be July 2013, I could wait.

 

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So currently, the 1DC is still on the top of my list. My biggest concern is whether it will be able to shoot continuous 4K clips without overheating. I have made calculations that 1DC generates heat 19.2 watts on average when shooting 4K video, see http://www.canonrumo...p?topic=13916.0

 

Does anyone have knowledge and experience of how long you can shoot 4K before the camera would possibly shut down? Anything less than an hour would limit my work. Without 4K, the HD quality of 1DC is comparable to 5D3, and then the investment would not make any sense.

 

How would this possibly "warm" camera behave in a housing? Would the limited circulation make the situation worse? Or would the relatively cool housing help? I dive mainly in 0C...20C waters. Would a warm camera in a cool housing cause condensation problems in the lense or dome?

 

Am I missing something? Should I consider someother video camera with a housing?