On 4/12/2017 3:40 PM, Alain wrote:
> Le 17-04-12 à 07:10, Jim Holsenback a écrit :
>> On 4/12/2017 2:56 AM, Thomas de Groot wrote:
>>> On 11-4-2017 14:28, Jim Holsenback wrote:
>>>> ... these 3.7.1 features. All materials have the finish level fresnel.
>>>> The key light uses the new light fading model. Used type 7 image map
>>>> with the hdr probe surrounding everything and last but not least tau is
>>>> used to position the camera and light source.
>>>
>>> Interesting, although I miss a bit of highlights on leaves and petals.
>>> They seem a bit flat.
>>>
>> yeah i know what you mean ... it's the fresnel. perhaps a misuse for
>> those materials. this is still a wip and i ran out of time.
> 
> What's the ior of your flower?
> Remember that fresnel really always need an ior, or it just don't work 
> at all.
> My guess for the ior needed would be somewhere between 1.3 and 1.4. 
> Close to that of water.

yep using 1.3 (water) and hollow on as well. fresnel is angle dependent 
(lighting and/or viewing) right? maybe that's where i'm missing the bus.

also (not /entirely/ unrelated) regarding variable reflection. it seems 
a bit threshold-ish ... that is: reflection { 0, 0.2 fresnel } doesn't 
give exactly what i'd expect but reflection { any-small-none-zero-value, 
0.2 fresnel } does

Post a reply to this message