contrejour setup with vray

[fraggle]

Dear Vray user,
can somebody give us advice to deal with contre jour.
Typical situation is to have an object facing inside while camera focus on the object with the background beeing outside with a lot more light.
A- Outside is fine if the foreground is dark
B- Outside is burn out if the foreground is fine.

We tried with our basic lumix digital camera and there is not such burn out or dark foreground, the pictures looks nice. SO what's the trick?

Thanks

[vlado]

Do you use LWF for your scenes? It will help to brighten the dark parts of the image.

Best regards,
Vlado

[fraggle]

sorry I'm not a senior user of Vray, thanks to translate LWF?
I used LC + IR for interior scene with physical cam and vray sun + vray environement.

Thanks

[joconnell]

LWF is a short acronym for linear work flow. There's an issue with monitors of all kind in that they aren't showing you the render as vray makes it - nearly every monitor has a slight darkening effect on the mids of the image - it's as if you had opened the image in photoshop but then applied a curves effect with a point in the middle dragged down a tiny bit. What LWF does is apply a brightening to the mids of the image to try and counteract the effect of the monitor darkening and you'll get a few big benefits. Your lights will fall off in a much more natural fashion, you'll get less burnt out areas of your image in the highlights and you'll also get brighter areas and more detail coming out in the shadows.

It'll get you something a lot closer to the results you're getting from your lumix. Another thing of note is that a lot of cameras will do a little bit of colour correction if it's making a jpeg to make the burnt out areas less harsh.

[fraggle]

yes I do, not intentionaly of course.
But still, even with LWF, the outside is burn out whil inside is to dark.

So for now, I will go for old school tricks, make two render one exposed properly for outside, one for inside then compose the two into photoshop.
If you do have a better idea let me know.

Tks.