[Matt Collett]

here is another image where it is more prominent, as its of the clapper board I’m able to show it.

Its this green fringing creating artifacts. Im trying to establish what could have caused this and why and also why the camera operator would not have noticed this and flagged it up during the shoot

Thanks

[Matt Collett]

Sadly we didn’t shoot it, it was shot by an operator hired for this. It was shot in a studio using LED lighting and a Kino Celeb light, I can’t upload other pictures as you will see the product which is an unreleased laptop.

I’m not sure of ISO and color temp but the footage was shot C-Log. I’ve contacted the camera hire company and the DP – but am awaiting news so any insight anyone can shed on this would be really appreciated as I’ve worked with c300 footage hundreds of times and never noticed this issue.

Thanks

[Matt Collett]

I used this for a job years ago, I cant test it right now and cant remember exactly what parameters you could change, but it might help https://aescripts.com/yy_hextex/ The image looks like a 3d job though, and the shimmering would be made of real reflections. you might be able to fake this using another layer to ‘light’ your hexagons, that layer can have noise etc to create the changes in tone.

[Matt Collett]

Hi Todd, thanks for responding. So the top image should be a clean surface flat s some gradient due to the lighting, but it has that purple digital noise, the object in shot is actually out of focus, but there are those broken vertical lines over the image. the second image has the same it has the image with lots of motion blur due to camera movement, but green and purple noise is pixel sharp and follows the shape of the background image.

There are several images that have the same problem either green or magenta noise, and it is all in midtones, on greyish footage, i.e. the parts that have skintones dont have the problem, but the grey product and greyish wall have the issue.

hope that makes it clearer, really appreciate if you have any ideas at all.

many thanks again
matt

[Matt Collett]

Im guessing your problem is that it isnt a pure silouette, ie the background behind the girl isnt white. you need to add effects to the girl and play with the levels or curves until the background is completely white. Then you can use that image as the key, it will be a luma key as you are using the white levels to key out the landscape image.

So your final layers will be: bottom – 1st image of girl. middle layer landscape with ‘luma inverted matte applied’. and top layer will be the girl with effects applied to seperate the girl and her background as best you can. precomp this top layer and do what ever you can to seperate her and the background. curves probably wont do it you can also use ‘change color’ ‘hue saturation’ and probably some rotoscope with masking. Good luck!