Messages

241

Work in Progress/Tests / Re: dubcats secret little hideout

« on: 2018-07-06, 15:29:08 »

correct me if Im wrong but „Diffuse” in corona mat describes total reflectance (diff + direct). when you add „Reflection” on top of that Corona dimms diffuse part to balance the energy.

242

Work in Progress/Tests / Re: dubcats secret little hideout

« on: 2018-07-06, 13:12:56 »

4% or 24% does not matter as long as diffused reflections are dimmed by direct ones. that looks ok to me in Corona but I also never bothered with side-by-sides.

243

Work in Progress/Tests / Re: dubcats secret little hideout

« on: 2018-07-06, 11:11:55 »

finally. thx for educating people about flares on hdris.
another thanks for all of you guys chasing fstorms tone mapping. great work. I'm spending more and more time on this forum because of content like that.

quick question about paint color samples: why subtract 4% form 13% LRV when corona's mat does energy conservation for you?
and what about doing it with composite map from max? (attached). 13% gray map and color sample on top in "color" blend mode plus maybe lowering saturation a bit in some cases (oversaturated samples made looking nice on screens)

244

General CG Discussion / Re: Dealing with cylindrical correction of volume anamorphosis

« on: 2018-04-06, 19:34:26 »

add two gradients. black to red and black to green. red gives you X and green - Y. render that in resolution you need.
16bit minimum and full float optimal - you need separate values for all the pixels in the image and accommodate for distortion.
than distort it to your liking with whatever software you have (example attached).

245

General CG Discussion / Re: Dealing with cylindrical correction of volume anamorphosis

« on: 2018-04-06, 17:30:57 »

it's just a sample made for 8mm lens camera so the look is pretty extreme. the point is you can put any projection you can imagine into texture like that.

246

General CG Discussion / Re: Dealing with cylindrical correction of volume anamorphosis

« on: 2018-04-01, 08:32:46 »

try this texture as distortion map in camera:
https://we.tl/8G2rSuMg8m

1920x1080 resolution should work best with this one.

247

General CG Discussion / Self updating masks in Photoshop

« on: 2018-03-24, 21:24:07 »

Quick tip for compositing in Photoshop:

248

[Max] General Discussion / Re: chromatic aberration in Corona

« on: 2018-02-22, 11:08:45 »

my examples from first post were done with flat lens. some even with single polygon lens (single polygon unfortunately not in corona).
agree on the level of usefulness though.

249

[Max] General Discussion / Re: chromatic aberration in Corona

« on: 2018-02-22, 10:50:13 »

Why would you want to couple color aberration with distortion? distortion has separate dedicated tools in probably every virtual camera in every package.
flat "lens" with dispersion is enough.

250

[Max] General Discussion / Re: chromatic aberration in Corona

« on: 2018-02-21, 19:20:56 »

I'd love to have the ability to plug "real" type of camera in corona

I guess all the tools are already there.
not a lot of work to prepare distortion texture and adjust vignette.

251

[Max] General Discussion / Re: chromatic aberration in Corona

« on: 2018-02-19, 20:15:09 »

IOR<1 are treated as 1/IOR in Corona, so you're getting correct result.

to optimize this setup I would actually need "incorrect" IOR<1.
but no worries - nothing essential.

252

[Max] General Discussion / chromatic aberration in Corona

« on: 2018-02-15, 19:49:59 »

I've been rendering some tests lately regarding feasibility of creating that sort of effects in render without any kind of post. render, save it, done.
anybody have experience with that in Corona? (not colored aperture maps - I need something realistic)

question: any chance of setting IOR below 1? when I'm inputting it as color - value of 0.9 gives me IOR 1.1