Forum > A-Cam dll > new cat footage

Author Message
ManoloLP
2010-06-03 01:27

Hello. The new footage has overexpose highlight in magenta, it is very obvious if decrease the exposure control in Adobe camera raw. Is this a bug of the camera design? or the software?

Attached files:

13000038.jpg
Matthew Bennett
2010-06-03 02:50

I have a DVX100A-Andromeda system which outputs a RAW file directly from the chips - and often/nearly always get this effect in my RAW linear files.

With the DVX it's got a three CCD system, and the green CCD won't create information into the high tones, thus leaving the blue/red to fill in, creating magenta highlights... or something like that. Damn I could never really scientifically wrap my head around it.

But that's the way it is, and I just go in an export my usually dark linear images with a LUT/or curve to compensate or simply blow that magenta into pure white, etc..

Just another step in post...

I thought the A-cam was a single CCD - how does it do that I wonder...

Matthew Bennett
2010-06-03 02:50

I have a DVX100A-Andromeda system which outputs a RAW file directly from the chips - and often/nearly always get this effect in my RAW linear files.

With the DVX it's got a three CCD system, and the green CCD won't create information into the high tones, thus leaving the blue/red to fill in, creating magenta highlights... or something like that. Damn I could never really scientifically wrap my head around it.

But that's the way it is, and I just go in an export my usually dark linear images with a LUT/or curve to compensate or simply blow that magenta into pure white, etc..

Just another step in post...

I thought the A-cam was a single CCD - how does it do that I wonder...

Nick ACS
2010-06-04 15:05

I think you'll find it is the post processing. I processed the early beta footage I shot and often got this issue but later put it through a converter into cineform files and the conversion overcame this issue. It seems different software does it differently and in my case the cineform conversion didn't clip in the magenta channel. Not a camera issue..a post one.

Nick ACS
2010-06-04 15:05

I think you'll find it is the post processing. I processed the early beta footage I shot and often got this issue but later put it through a converter into cineform files and the conversion overcame this issue. It seems different software does it differently and in my case the cineform conversion didn't clip in the magenta channel. Not a camera issue..a post one.

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