HSL adjust corrupts the final image?

CS70 wrote on 6/25/2016, 5:57 AM
Hello! Movie Studio 13 64bit, bulid 955. I've been using the HSL adjust plugin, to decrease saturation, and I find it creates lots of pixelated artifacts in certain areas, typically bright ones. Doesn't look good at all. Anybody seen this? I found a 2014 thread about a bug there and the fact that it was going to be fixed, but I think I have the latest build and (if it's the same problem), it's not.

Are there any better ways to remove saturation?

Thanks!

Comments

musicvid10 wrote on 6/25/2016, 6:23 AM
Post a screenshot and your settings.
CS70 wrote on 6/25/2016, 11:44 AM
I found that the issue does not appear if I desaturate with for example the Sony Color Corrector rather than the HSL plugin. So problem solved, but surprising that a bug like this exists. Or maybe there's something that the CC auto-compensates for?

The HLS settings are simply Saturation = 0.308, the other two are left untouched. The color corrector has the same (all untouched but for Saturation).

The image is a zoomed-in one, so not that sharp, but it works fine with the setting.

Original image: https://dl.dropboxusercontent.com/u/91812191/original%20img.png
Desaturated with Sony HSL: https://dl.dropboxusercontent.com/u/91812191/desaturated%20with%20HSL.png
Desaturated with Sony Color Corrector: https://dl.dropboxusercontent.com/u/91812191/desaturated%20with%20color%20corrector.png

The artifacts are most evident both in the bottom left part of the image and in the shadow on the left side, but they do not appear when desaturating with the Color Corrector.
musicvid10 wrote on 6/26/2016, 7:22 AM
The color corrector will give you more accurate results, partly because it uses a trilinear (RGB) model. HSL using only two channels to convey hue (and saturation),, is more of a holdover from mid-century color television, as a bandwidth saver. Still, HSL is more intuitive for many people.

CS70 wrote on 6/26/2016, 1:09 PM
Thank you. Yeah, the CC works just fine. Luckily I had it on the entire main track and not on individual snippets so switching was a breeze.

Cheers,

-cris