Black Stretch?

Jared Meyer

Jared Meyer

Veteran
Does anyone have a good explanation of "black stretch"?

Is this relevant to the dvx100a?

I've done a few searches (here and on google) and haven't gotten any great results.

I'm thinking it's a feature that improves latitude in low light conditions, and I'm guessing the dvx does not employ it. Am I way far off?

Thanks,
Jared
 
Hey j,

ok from Barry greens Trusty DVX book........ a paraphrase of the Gamma curves.


black stretch basically, spreads the "almost black" information of the darker parts of the picture a little more into the mid tone area of the scale. "stretching " it up into the brighter part of the picture. it helps to preserve a little bit of the details, in effect brightening up the darks, without making the black too milky. if its near black it stays there, but if its just alittle brighter, it pushes that information brighter so you can see it more easily.

This is what i got form the Book.

Apparently barry just says, leave it in Cine gamma....
 
Thanks for replying Timur.

Any chance you could point me to that exact section in the book?
I looked through the gamma explanation but never saw "black stretch".
 
.......54

Haha... i see wht youre talking about, it doesn not directly refer to Black stretch. But htats what CineGAMMA-D is doing. it applies gain to the lower end of the signal, making it noisy, but visible. Essentially, black stretch.
 
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Ok, well thanks. I guess I was thrown off by the absence of the exact term.
So Cinegamma-D is as close to Black stretch as the dvx offers.

Not too popular of a topic, seeing as how no one else chimed in, so I guess I'll go with that. I appreciate your replies Timur. :)
 
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