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hi,

since i couldn't find any in octane, i'd like to state this one as a wish, hoping to be heard:

is it possible to have a pinhole camera in addition to the thin lense?

i would love that, otherwise i don't see how i could make the render output from my host (c4d - standard and/or physical renderer incl. tfd and/or xparticles renderings rendered with those and/or scetch&toon) match the octane output.
unfortunately c4d only provides pinhole. i know that maxwell an vray do have an additional pinhole option, which makes the process of comp of those outputs with c4d-outputs very comfortable.
i would love to have that option in octane, too.

thx.

Hey Mesut,

just set the Aperture to 0 or the f-stop to 1000 (the values are linked). Everything will be sharp.

Greetings

thx for your answer.

well... in the meantime it seems, that it was a classical user-behaviour that led me to the false assumption, octane and c4d-renderings would not match.

since i was not able to reproduce the situation with a simple scene, i went on and had a look at the project-files in which this "problem showed up".
it seems, that i moved parts of the object a small amount and then did my c4d/tfd/xparticles-renderings. those i tried to match with the older octane renderings which of course did not include this movement of object-parts, so eventually the diverse renderings could not match.

well... sorry for raising up your attention without having cleared my own situation properly beforehand.

best,
mesut.

Hesekiel2517 wrote:just set the Aperture to 0 or the f-stop to 1000 (the values are linked). Everything will be sharp.

It is not about DOF but about lense distortion - C4D doesn't have any because of its pinhole camera.

Mesut: Did you test OC vs C4D camera? I just did with a focal length of 22 at short distance (which gives you the strongest distortion) and found no difference.

-> Which makes me wonder if Octane even uses a realistic lens system as Vray does?!

zoppo wrote:

Hesekiel2517 wrote:just set the Aperture to 0 or the f-stop to 1000 (the values are linked). Everything will be sharp.

It is not about DOF but about lense distortion - C4D doesn't have any because of its pinhole camera.

Mesut: Did you test OC vs C4D camera? I just did with a focal length of 22 at short distance (which gives you the strongest distortion) and found no difference.

-> Which makes me wonder if Octane even uses a realistic lens system as Vray does?!

yes, it was about (assumed) distortion - similar to the difference that one can observe when comparing vray/maxwell thinlense with c4d-pinhole.
in vray/maxwell this discrepancy is to be ruled out by selecting the option "pinhole". then the results of c4d and those external render engines do match.

i assumed that i was experiencing a similar effect during the last two parallel commercial projects with octane (my first ones using this enginge... yeeeeyyy )
now, after things have calmed down, i was able to have a look at the situation again but was not able to recreate a simple situation in which this discrepancy occured.
so i looked at the projects and realized that user-behaviour was the problem (i had moved parts of objects ^^), and not the assumed mismatch of cameras.

in simple test-scenes, willing to reproduce the assumed discrepancy, i tried diverse wide and tele situations but none of them led to discrepancy between octane thinlense renderings and c4d-pinhole ones.
which - at first glance - is good news.

having a second thought, one might wonder, if there should not be a discrepancy though... because... well... a pinhole camera is something different then a thinlense camera... isn't it?