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Author Topic: Guide explaining picture profiles?  (Read 2338 times)
spotmeter
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« on: September 26, 2012, 07:05:06 AM »
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I see lots of recommendations for setting picture profiles for various video cameras, but I can't seem to find a good guide that explains what they all mean and what they do.

I'm looking for something like 'Picture Profiles for Dummies'.

I come from a photography background and can process my photos in Photoshop and Lightroom, but I am not sure what 'knee' and 'gamma' really mean and how changing them affects my picture quality.

Has anyone found something useful in this area?  Something with screen shots that show the results of the changes in settings would be really helpful.

Thanks.
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Morgan_Moore
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« Reply #1 on: September 26, 2012, 02:27:35 PM »
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Gamma just another word for Curve - apple M in photoshop

Mostly a normal gamma lifts the mids

Knee is a flattening of the top of the curve in an effort to stop highlights clipping

IMO Knee is the devil and give the video look of plastic skies, or plastic skin if your skins enter the knee zone.

Now. there is also some gamma stuff for different screens, basically AFAIK CRT screens crush the darks - so video people apply a standardised curve to counter this, lifting the darks

S
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Sam Morgan Moore Cornwall
www.sammorganmoore.com -photography
spotmeter
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« Reply #2 on: September 26, 2012, 02:57:36 PM »
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Appreciate your taking the time to try to answer my questions about knee and gamma, but this is not what I am looking for.

I am looking for a guide that will explain all the picture profile settings.

Thanks.
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Morgan_Moore
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« Reply #3 on: September 26, 2012, 03:19:42 PM »
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The settings of a Banana?, an F35, an F65 and Z1, an FS100?

The sony FS100 book is here.. http://www.sony.co.uk/res/attachment/file/24/1237485175424.pdf

Some of it is wrong, the muddle negative and positive up and use phrases like 'more black'

S
« Last Edit: September 26, 2012, 03:22:06 PM by Morgan_Moore » Logged

Sam Morgan Moore Cornwall
www.sammorganmoore.com -photography
Chris Sanderson
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« Reply #4 on: September 26, 2012, 03:27:38 PM »
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Profile Settings are camera specific. Look at the various fora for your particular camera.
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Christopher Sanderson
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« Reply #5 on: September 26, 2012, 06:01:29 PM »
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When all else fails, RTFM.  The manual should explain what the various style settings do.
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