Messages

1

[Max] General Discussion / Re: ray histogramm fusion - is this something?

« on: 2014-06-13, 17:45:57 »

But how it will behave with small details?... seems suitable for large areas of same color at large resolutions...

check the pdf, there are more examples - leaves, grass volumetric effects etc. it seems to work fine. the real question is how it works with textures

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[Max] General Discussion / ray histogramm fusion - is this something?

« on: 2014-06-13, 10:28:10 »

i stumbled upon this paper for siggraph 2014:
http://dev.ipol.im/~mdelbra/rhf/  (youtube video included)
just curious to hear some thoughts if this really can work as advertised, because the speedups look huge..

3

[Max] General Discussion / Re: Corona Alpha4 Benchmark scene

« on: 2013-03-19, 07:27:06 »

Intel(R) Core(TM) i7-3720QM CPU @ 2.60GHz
Time: 0:6:1, Rays/s: 3,518,929

4

Gallery / Re: new wide angle lens caustics

« on: 2012-11-10, 13:28:30 »

its done with the public alpha - the nightly didn't want to accept "invisible to camera" property - so its normal path tracing

@keymaster - you can use it without crediting me (i anyway still have no website up - and searching for a good name)

i would love to find an good nurbs model of a SLR (with all the nuts and bolts) and place it in a fancy interior / studio setup.. but for now i guess it stays with sponza

5

Gallery / new wide angle lens caustics

« on: 2012-11-10, 11:37:44 »

another lens - this time a wide angle spherical lens with an (ugly) camera body inside sponza..
wanted to make something that looks a bit better than the noisy teapot from before

6

Gallery / Re: WinOsi Cubo / BiDir test

« on: 2012-11-09, 12:37:02 »

oh - they are not public? can i get one?

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Gallery / Re: WinOsi Cubo / BiDir test

« on: 2012-11-09, 12:35:50 »

ah! - will try that later today - guess will have a good impact on the camera lens stuff i play with

8

Gallery / Re: WinOsi Cubo / BiDir test

« on: 2012-11-09, 12:20:29 »

looks nice!
is there a specific checkbox for bidirectional? (i have the latest alpha v3)

9

Gallery / Re: caustic experiments with photographic lenses

« on: 2012-11-09, 02:26:59 »

had some "practical use" ;)
a while ago we had to do a short lecture on camera lenses - specifically why there are so many in one lens, and not just one..
after some research i had the idea why not try to render it (with maxwell at the time)
since then this became a good stress test for render engines to me.
and corona did the best job so far
lens flares i will try next ;)

10

Gallery / Re: caustic experiments with photographic lenses

« on: 2012-11-08, 01:56:21 »

and just in case:
http://www.google.com/patents?id=fqxnAAAAEBAJ&zoom=4&dq=3359057&pg=PA1#v=onepage&q&f=false
here is the cooke triplet data

and here the wide angle one:
http://www.google.com/patents?id=NY87AAAAEBAJ&zoom=4&dq=3731989&pg=PA1#v=onepage&q=3731989&f=false
there are 2 different ones, i dont remember which one i built - there are good indicators in the pdf, but i scaled the whole thing in max - so you would have to check relative numbers to find the right ior set..

11

Gallery / Re: caustic experiments with photographic lenses

« on: 2012-11-08, 01:43:47 »

for sure! its just - the scene is a total mess as is went from originally maxwell, to vray, to corona - and the layers are a mess too - you will find other lenses in there as layers (some fancy wide angle - but i lost the patent pdf, so no ior numbers :/

12

Gallery / Re: caustic experiments with photographic lenses

« on: 2012-11-08, 01:39:20 »

camera is looking at the projection plane
i did at the time comparisons between spherical/aspherical and cooke triplet
attached is a wireframe and an old side from the presentation (its maxwell, and took ages to render)
the problem with aspherical lenses was the function to generate them was, lets say not so hard to get, but once i had the patent papers in front of me, i gave up on it
btw - all the curves were created in rhino and meshed in max - just for precision - this whole setup is rather fragile when it comes to mesh resolution and small errors multiply as the light propagates trough the lenses

13

Gallery / caustic experiments with photographic lenses

« on: 2012-11-08, 00:44:04 »

First - i have to say - i just downloaded corona some hours ago, and i have to say this is the most promising renderer i saw in many years! (and i saw a lot)
I dug out some old maxwell scene i did for a presentation a while back (explaining the working principle of a camera lens)

The images you see here are not so easy to grasp - its basically a rebuild of an old cook triplet camera
I got all the info from google patents - ior, lens radius etc.

the results are perfect compared to vray and maxwell - and extremely fast!
maxwell was also good, but 10 times slower.. vray didnt reproduce anything close to this (even with gpu)

20 minutes each, and one i had to flip - like in a real camera ;)
(no postprod - straight from the engine)