Fstorm render

[dlparisi]

Does fstorm have a stated or explicit gamma setting? Looks more like a 1.8 gamma than 2.2.

[mitviz]

Does fstorm have a stated or explicit gamma setting? Looks more like a 1.8 gamma than 2.2.

i was wondering the same

[glorybound]

I saved a jpg from both and the FStorm saved dark, so I applied a 2.2 gamma to it in PS.

Does fstorm have a stated or explicit gamma setting? Looks more like a 1.8 gamma than 2.2.

[Donfarese]

It is amazing how different FStorm and V-Ray look. The glass is totally different and so is the shadows, however, applying a curve to the V-Ray ones would produce the same effect.

Are you sure you have the settings right for RT? That seems really long for RT, I would of expected around 4 min maybe even less. Fstorm is Unbiased so that 19min is expected. I rendered a scene out in Redshift in 11min, Fstorm took 33min.

[glorybound]

I let V-Ray RT run as long as it took FStorm. V-Ray RT was pretty noisy until it got up and around 15 minutes. I did nothing but switch to VRay RT and hit render. Tweaking settings might speed things up, however, I just wanted to see what happens if someone who is fresh of the boat hits render. No settings were touched.

[Donfarese]

I let V-Ray RT run as long as it took FStorm. V-Ray RT was pretty noisy until it got up and around 15 minutes. I did nothing but switch to VRay RT and hit render. Tweaking settings might speed things up, however, I just wanted to see what happens if someone who is fresh of the boat hits render. No settings were touched.

Oh god yeah that's not going to work, I hope you at least set it to Cuda or you was actually using CPU RT. Fstorm is actually already setup really good out of the box to just hit render. RT GPU you need to set a few settings.

[LudvikKoutny]

It's hardly just gamma or tonemapping. No, just applying curve won't make it look the same.

You can never assume any scene will translate 1:1 to different renderer. Just look at the drawer handles. In Fstorm one, main key light source is window. In V-Ray one, there's fill light coming somewhere from behind the camera, that either got lost in translation completely, or translated wrong.

This set of pictures could only serve as an example of how well can Fstorm translate V-Ray scenes. But any comparison of lighting and shading in such circumstances would be completely off

You can't even compare performance in such case. There may be something that Fstorm translator translated in a way that makes it slower to render... something that would work a bit faster when set up from scratch.

[glorybound]

I totally agree, however, one of the points was first time users producing incredible images.

[LudvikKoutny]

Sure, but I think majority of them produced them from scratch, or at least manually reshaded and relit their scenes. I doubt those, who made some great looking Fstorm renders just opened their V-Ray scene and hit render.

That being said, out of the 3 you posted, I'd pick the Fstorm one

[dlparisi]

It's hardly just gamma or tonemapping. No, just applying curve won't make it look the same.

I wasn't referring to the gamma of the image but the gamma of everything internally. Totally spit-balling here, but couldn't this account for the lack of the fill light behind the camera in the fstorm version? If the internal gamma is different wouldn't the bounce light fall off much quicker (similar to the pre linear workflow days)?

[LudvikKoutny]

I doubt there will ever be any capable modern renderer that will ever use other gamma than 2.2. Fstorm does LFW like any other renderer, it's just that it has some slight tone mapping on top of it, but there's way more going on in Bobby's images than just different tone mapping.You can't really point at anything and say "It looks like Gamma *.*", there may be some tone mapping, or Photoshoping done to it.

Anyway, you can easily test your hypothesis. Download Bobby's V-Ray render and open it in Photoshop. 1.8/2.2=0.82, so just use Exposure adjustment layer in Photoshop, and set gamma slider to 0.82. At gamma 1.8, image will become slightly darker and more contrasty, but it won't magically shift to Fstorm looking image.

[^Lele^]

It's the GI clampling at 1.0 and the 8 diffuse bounces by default which make it contrasty.
the LC will distribute light across 100 bounces, making for a substantially brighter render, under identical color mapping conditions (those include Gamma, btw.)

[mitviz]

are there any plans to add stuff like this to vray? i mean vray can only improve, having the same tonemapping etc as octane and these others would make it the icing on the cake

[^Lele^]

http://forums.chaosgroup.com/showthr...238#post701238

[mitviz]

http://forums.chaosgroup.com/showthr...238#post701238

o yeah! nice! thanks Lele!