[Mihai]

Josephus, you can think of IES files sort of like the IOR files but for emitters. A lighting fixture manufacturer measures the amount of light from a fixture, and where that light shines and puts those measurements in an IES/EULUMDAT file. So instead of having to model that fixture, pretty accurately, you just apply the IES profile and you're done. It still matters ofcourse how accurately they measured the lighting, how many angles etc. But usually you have a pretty good representation of a particular lighting fixture and it's strength from the IES file.

[paxreid]

Mahai,

Is there any function or plans to enable lighting calculations / evaluation, on top of the representation? Similar to Radiance or other lighting analysis tools.

Thanks.

[def4d]

Could it be possible for the next reveal, you show a real vs Maxwell render?
I really don't have any doubt about it, it's only impatience

[Josephus Holt]

@Cadhorn....thx for the good reply. Although somewhat familiar w/the term (I'm an architect) I've never had a client who was THAT concerned about the accuracy of the light, although it seems like a good idea to render based on realistic illumination data...so when v2 is out (and in hand) I'll take a look at it. Thx again.

@Mihai...didn't see your post at first...thx for the good reply. I'll definitely look at it.

[Fernando Tella]

As we are going to get IES I'll post this. Someone's sharing an IES viewer and an IES generator in evermotion forum; maybe it's useful.

EDIT: It's better if I paste the link
http://www.evermotion.org/vbulletin/sho ... hp?t=69183

[def4d]

Maybe most of clients aren't aware of realistic spotlights effects, but we are because we will win a huge time, and will be sure of the result in every situation before lauching render.
IES is not a revolution, but IES in Maxwell yes.
And i fully advice everyone who haven't use IES yet, to have a try with it with their traditionnal renderer before V2 is out!

I'm asking myself what will be the trick with glare. Adding a standard tiny emitter oriented to camera? Linked with the IES for the color?

[Fernando Tella]

I'm asking myself what will be the trick with glare. Adding a standard tiny emitter oriented to camera? Linked with the IES for the color?

Good question, as the IES data are projected from a point we are not seeing the light source itself... we should fake the lamp, right?

[Fernando Tella]

Another IES viewer: http://www.cgarena.com/freestuff/tutori ... rSetup.rar

[def4d]

... we should fake the lamp, right?

In the V2 IES render, emitters are invisible, so glare doesn't apply on their direct light, so we will certainly have to fake somewhere.

[alexyork3d]

this is massively good news indeed... no more having to model complex fixtures just to get a simple light to look good for distance renders, or even middle-ground renders.

excellent!

[def4d]

An exclude lights to Multilight option would be usefull, don't know if it's been already asked though.
About Glare, NL presets would be cool, and the option to save ours too