Slow Motion image sharpening?

[Jordan Acomba]

I am wondering if shots captured at 120fps need to be processed for sharpening in Redcine? I have heard that the RED captures at 1280x720 when shooting over 90fps. As I heard it these images then require sharpening in Redcine before you can handle them as dailies. Please confirm the workflow if you know what this is about.
thanks,

 

[Dan Hudgins]

WTF?

WTF?

I am wondering if shots captured at 120fps need to be processed for sharpening in Redcine? I have heard that the RED captures at 1280x720 when shooting over 90fps. As I heard it these images then require sharpening in Redcine before you can handle them as dailies. Please confirm the workflow if you know what this is about.
thanks,

Since as far as I know REDONE sensor does not support pixel skip or pixel bin, it would shoot the same sensor area for all frame rates, othewise the image angle of view would change.

Who told you the sensor area changes?

What probably happens is that the compression becomes a bit more abstract since the bit rate is constant, the image processing before compression should be full-bandwidth, should it not?

 

[Nick Shaw]

You are half correct! When shooting at higher frame rates the sensor area (and hence field of view) does change. The RED does not line skip, but rather 'windows' in to a smaller area in the centre of the sensor to achieve higher frame rates.

There is a table in the user guide which lists the exact permutations of resolution and frame rates available on the various recording media, but in essence the full sensor can be clocked at up to 30fps, a 3k window at up to 60fps, and a 2k window at up to 120fps.

The actual resolution of the 2k window at 120fps is 2048x1024. The camera does not record 1280x720. I suspect that the person who told you that was misunderstanding the fact that many people recommend that 2k material is not used for a finish at higher than 720p resolution. This is just a recommendation rather than an absolute rule. 2k material can be intercut with 4k material, and a stunning slow-mo shot processed well (with a bit of sharpening) should not be distractingly obviously lower resolution to the viewer.

 

[Jordan Acomba]

Sharpening...

Sharpening...

The actual resolution of the 2k window at 120fps is 2048x1024. The camera does not record 1280x720. I suspect that the person who told you that was misunderstanding the fact that many people recommend that 2k material is not used for a finish at higher than 720p resolution. This is just a recommendation rather than an absolute rule. 2k material can be intercut with 4k material, and a stunning slow-mo shot processed well (with a bit of sharpening) should not be distractingly obviously lower resolution to the viewer.

Ok, that makes sense. What Red software do I use for the sharpening process? Can I get some assistance with the steps in the process if it is not straight forward?

thanks,