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Messages - Konichowaa

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Bug Reporting Cinema 4D / Re: .ies bug on rebus farm
« on: 2019-04-03, 22:23:08 »
I have similar problems in C3HF1 with IES lights sending to the renderfarm when the folder my project was in, had a special character such as a french "√©" in the name.  On my own workstation all renders were fine, and on renderfarm without IES. I don't think it was specifically related to corona then, but rather the archiving plugin. Spent lots of money figuring it out that was the reason my renders came back without the IES lights...
I learned the hard way then , but now a warned man... something :) ...

Ah, that's great news! I was hoping for that... so looking extremely forward to that release then... thx

Is it still possible to render pool caustics with HF1? with me it seems that, when changing to PPM renderer for that, c4d crashes when starting a render or IR

it wouild be nice to have that in the standard progressive renderer though... 

ah yes, I see now that it works in IR but not in PV.
thank you nonetheless...

let's hope a fix is in the making for soon release...

@Exactly: could you post me an example file? I just cannot seem to reproduce this in R19 or R20 (3 HF1)

make a light, then

instance = white light
render instance = no light at all !

regular cloner with regular instance = all clones are white light
regular cloner with render instance = no light at all !
render instances cloner with instance = first light white, other clones no light at all
render instances cloner with render instance = no lights at all

instance inside fixture (geometry) = white light
render instance inside fixture symbol (geometry) = no light at all !
instance in fixture instance = white light
render instance inside fixture render instance = no light at all !

I'm sorry but I just can't seem to make it work with render instance. The only way to have "colored instances" is using temperature for coloring, like @davetwo suggested but the light color is really nasty and not accurate at all! I mean, try putting it on 2700K and see what you get, not entirely what I have in my living room...

Renders with temperature lights are IMHO ugly red saturated.
Check the two attached raw renders,
first with dec2018 corona,
and second with corona3 HF1 temperature.

I also don't understand why this was released without being noticed/fixed. Instancing lights is essential for a good project organization.

I would go back to the previous version wihout a doubt if it were only supported on the renderfarms (on which I depend almost daily), but unfortunately they all upgraded too to C3HF1 ...

Bug Reporting Cinema 4D / Scene Converter errors
« on: 2019-02-23, 19:30:40 »
I have these problems converting purchased 3d models to corona from native c4d engine.

From Native C4D engine:

For reflectance channel; The "layer Fresnel - IOR" is not converted properly, so metals with a IOR of 10 get a Fresnel IOR of standard 1.52 after conversion.

For layer shader (p.e. in diffuse channel); all layers are deleted after conversion.

For Transparency channel ; Bluriness is not converted to refraction glossiness

From VrayforC4D:

For layer shader (p.e. in diffuse channel); all layers are deleted after conversion.

can anybody else verify this? THX

Bug Reporting Cinema 4D / Re: Instant Lights
« on: 2019-02-22, 15:21:44 »
Wel I learned yesterday from @Davetwo that you can still use the cloners and instances if you use temperature instead of color on the original light.
It's a workaround for now, but IMHO the coloring is not as subtle with temperature as it is with regular color and also limited color palet.

Thank you!
I can verify that indeed using temperature is the best workaround for now! I don't really love the hue on that, but at least I can keep my prepared symbols as is, and stay organized!
I still hope though, that a fix is coming soon...

Corona Renderer for Cinema 4D - general / Re: Fireflies!
« on: 2019-02-21, 10:22:13 »
what is your light setup?
do you have by chance a hdri as a background (without GI/shadows)?
I once had a project where I had unexplainable fireflies in some blurry reflections, that no matter what I tried, I couldn't get rid of. The fireflies also became worse and worse the longer I rendered (kept appearing new ones).
I had a scene setup with HDRI for lighting and another HDRI for background (without GI/shadows). I spent more than a day searching... When I finally tried to put the high-res JPG version instead of the HDRI for the background the fireflies were gone ...

I found out indeed that it is not related to IES specifically but to lights that are instanced by instance object, cloner, symmetry object etc (generators)...

in the two attachments I get the same result with IES light and as area light with IES disabled.

from left to right I have placed:

Left Left  : Regular Instance object of the centre symbol including the light
Left         : Original fixture symbol (mesh) with Regular Instance object of the light source
Centre     : Original fixture symbol (mesh) with original light source
right        : Original fixture symbol (mesh) with Render Instance Object of the light source
right-right : Render Instance Object of the centre symbol including the light

As you see, I can't render the light at ALL with "render instance" enabled (just like I never could in earlier corona betas and/or vray)
can you check if you can? I included the test file...

sure you can, I did a sun study a few days ago...

follow the tutorial then rotate the physical sky to fit north position to your scene 

you could link the corona sun to the C4D physical sky and edit the north, date and time there...

check out an excellent tutorial on the matter by Shawn Astrom:

Bug Reporting Cinema 4D / Re: Instant Lights
« on: 2019-02-15, 11:01:29 »
@beanzvision, unfortunately checking "render instance" may visibly "color" the instance in the viewport, but it makes to not render the light instances at all.

also: putting a corona light in a mograph cloner (without checking render instance) does also not work, as above, with correct color. See attachment (from left to right: cloner with original light-instance-original light)

also: importing a corona light, or light fixture with included corona light, from the content browser resets the light color in that corona light.

Needless to say that this is a serious issue and that this functionality (instancing or cloning lights) is imperative for an organized workflow!

I really hope this is at the TOP of the list with the developers at this moment and a hotfix for this is eminent!

I don't understand....This functionality worked properly in many beta versions, and now that I was forced to switch to the paid/commercial version (because ranchcomputing render farm upgraded to commercial version and I depend on them for every project), it stopped working.

thank you in advance for making this a priority, since there is no workaround...


Is it possible that in corona 3, IES color is not rendered? I see no change when changing the color saturation, even when set to 100%.

It also seems to reset the color settings (at least saturation) to zero when loading an older file or object from content brwser, which is very inconvenient...

after some testing, I found that the light itself is rendering OK, but when it is instanced (not "render instanced" but just instanced in a fixture) or inside a cloner, the coloring is neglected.
When making the instance editable again, the color is still neglected.

can someone reproduce this error?

on image: right is regular light. middle is instance of regular light and to left wall regular light inside cloner

Hey everyone,
I have an annoying problem regarding my custom material previews (originally vray material previews). as i learned from an earlier topic regarding material previews, I understand corona takes only the object, and that's fine by me, but ever since the beta release on 5-9-2018, the material previews are shown at about 60% of what they were before, as shown in the image
and they were already so small ;-)

I tried numerous variations including enlarging the object in the scene using size in coordinates, using Scale in the coördinates, changing object or camera position, camera angles etc... but it always seems to display the same size.

any ideas how to create a full size material preview? thanks

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