Hi, I just wanna know, what is the correct workflow in Corona while using HDRI for it’s lightsource?
Usually what I do is: assign HDR in environment slot, tes render, adjust the exposure & highlight in post tab then add sun and adjust its multiplier to match the light before.
Any suggestion is most welcome, thanks before.
ps. sorry for my english
I guess there’s nothing special there. But if you also have vray, you can use also vrayhdri map, as it is supported by corona, to have some more control over hdri map if you need to adjust gamma and exposure of hdri itself…
Also coronaportal material on planes covering windows might speed things up if you’re using hdri to light interior (just remember to keep as few portals as possible and they should be ideally just single polygon planes… I think..)
Hi Lacilaci, thank you for your reply. Currently I’m doing lots of exterior render (which the result I’m not really proud of 
).
I just feel that my light not “real” enough, maybe I just post the raw render here and ask for suggestion also 
there is really no way you could screw up HDRI rendering (i mean incorrect shadows, intensity, gi …)
@Lacilaci & Keymaster: this is my raw render using HDR and corona sun. As you can see, its kinda dull.
Maybe you can give some suggestion here. I’m kinda stuck here T.T
umm to achieve the strong shadow. Did I do something wrong here?
It looks like the sky is uniform so there are no visible shadows or shading. Maybe it’s because of the HDRI you’re using. Can you show it? If you want to keep it, try changing contrast between the HDR skylight and sun, for example use lower intensity of HDR and stronger sun.
It looks like your hdri is lighting your scene almost equally from all sides, I guess you could achieve the same lighting using a single color as environment lighting..
As rawa said try to avoid sun, instead use photoshop or if you have vray then vrayhdri and play with gamma and exposure settings for hdri itself to get more contrast. This will give you hard shadows and some variations in lighting…
If it fails, try different hdri or you might also try corona sky + sun…
You just have to tweak the input image itself, it is virtually impossible to get anything else than the single correct unbiased result from Corona in this situation
Hi thanks for the respond, Rawa. I will experimenting again with HDR light (without sun this time ;)).
I will post the result again here.
Thank you very much
Wow, really nice. Do you by any chance can show me what your HDR image looks like?
Thanks
http://www.aversis.be/tutorials/vray/vray-high-dynamic-range-hdri.htm
strongly recommend to read this before further experiments
if your hdri looks too dark in material editor try to set its gamma to 2,2
if hdri colors look unsaturated (whitsh) then you shoud try 0.454 as gamma
And i would recommend using camera exposure instead of changing hdr multiplyer
Hi, thanks Jahman. It’s really good reading and nice tips there :). Looks like I need lots of experimenting (also in my material setting, I realize it’s really bad).
Anyway, thank you very much for all of you
Wow, it is a really nice HDRI. The sun/shadow is sharp and had lots of natural color. Really helpful man Thank you
I can only confirm CG-Source is over-the-top best HDRi on the market. Both the fully sphericals like above, and the separate hemispherical Skies.
The resolution (16000px + !), clarity, dynamic range, is so far ahead from anything else there is, even much better than P Guthries’s one.
How about the one from Hyperfocal? they had 2nd series with skies that looks nice
