Topics

1

[C4D] General Discussion / Lightmix noise

« on: 2023-10-05, 20:13:41 »

Hello,

I don´t understand the lightmix:
-One image renders nice and after the render you´ve the possibility to save the image with interior lights switched on and another version with lights off inside the building for example
-Another image with lightmix  just doesn´t lose the noise, and after hours of render we see the disaster and have to restart the render without lightmix  and go the standard way = adjust the lights before and no adjustments afterwards!

It´s nice to use lightmix for previews, so we can change the sun-HDRIs and switch interior lights on/off for tests in the scene or previews...
But a time ago already I noticed that it´s not a good idea to have two or more hdris as different >light-selects< of lightmix in the final render as the image often just didn´t lose the noise...
So we now only have a sun light-HDRi and different groups of interior lights as light-selects, to adjust the lighting inside aftterwards...
But even this method is a risk: in the last projects finished two days ago I noticed after 3 hours of render that there just won´t be less noise. We stopped and switched the lightmix off, indeed it was the solution!... Next day I started this lightmix render again as a test and after 15 hours it was still noisy (particularly areas inside the building and glass objects) although the same scene (same lights but without lightmix!) was noisefree after 3-4 hours...
There is something wrong with lightmix.... to avoid surprices we will probabl only use it for testing/previews but avoid it in final renders now ...Really disappointing such usability problems :(...

Best, Artur / vizoom

2

[C4D] General Discussion / Chaos scatter: Distribution by a map

« on: 2022-10-10, 12:43:16 »

Hello,

why don´t we have the option to set up the distribution by a map (shader/texture/noise) in Chaos scatter?..or do I overlook it and such option exist someway?
Max-version has such an option. In the slot where you indicate the>count<, there is also a possibility to use a map.
I think it´s really essential.
By now we found a provisional workout: In the tab >transformations< we can include the scale and there is a slot for a map there:
So we define the scale from 0 to 100% and use a noise as a map: In black areas of the noise the instances have scale=0, in the white ones full-size. But I suppose the instances stil exist in balck areas, even if the scale=0 make them invisible, so they are calculated there so it has surely an impact on render time? What do you think?
With this methode we can also no more use the scale-transformation for size-variation, so it´s a weak solution.

What is the reason we don´t have a map for distribution like the Max version? Will it be implemented?
Thanks!

Best, Artur

3

[C4D] General Discussion / Bump in shady areas

« on: 2019-07-09, 20:10:26 »

Hello,

how can I improve the bump?
Tried with bump mask and normal mask, bump channel and corona normal shader:
The problem: In shady zones the bump effect is almost washed out...It looks really not natural, as it would be another material there :(.
Does corona-bump only work in directly illuminated areas?
Please look at the example attached.

Thanks!

4

[C4D] Feature Requests / Object-Masks in Multipass

« on: 2019-02-10, 23:21:34 »

Hello,

Many of us render object-masks, which are absolutely essential for all the post-work!
I find the best way is to use the monochromatic black&white mask for every object-group of same materials and I´m happy that Corona-C4D offers this feature in its multipass (...with Object-ID or Material-ID).

But I really miss two things...or perhaps I just don´t know how to adjust it(?)

1.
Masks for objects behind glass!...It´s very often the case that in an exterior we have also  to tune objects inside the building, columns, stairs, furniture, people etc...but Coronas masks dont take into account that there are transparent objects in the scene (glass in windosws e.g.) and corona doesn´t generate masks for any objects behind glass...
In native C4D it worked well: The masks for all transparent objects are defined otherwise then masks for opaque objects (transparent objects appear in the masks with different shades of gray depending on their transparency) ... and we get also object-masks for all objects behind the glass ....
It seams that in coronas masks glass is seen as every other object....
So currently the only workflow to get all masks, also for objects behind glass, is to change the scene after rendering to native C4d, throw away all lights, change the material of all transparent objects to native C4d-material with transparency....and render this scene again with C4d native renderer to get the right set of object-masks...
Sometimes a little tricky because of corona-materials with alpha and of course an additional work every time!

I just spoke to another person from another studio....they have the same problem and their workflow it exactly the same I described with a second render;)....

2
When saving to a PSD-file from native C4D, all object-masks are automatically inserted in PSD-channels!..it´s great, because when you need a selection, you go to the channels, cmd-click (on a Mac) on a channel icon and you have your object selected....
When saving to PSD after a corona render, all the objects masks appear as layers, not as channels :(.....Would it be possible to cahnge it or to have the choice ;)))!

Thank you very much!!!

5

[C4D] General Discussion / Settings for Tiff, jpg etc when saving from VFB...

« on: 2019-02-10, 22:31:56 »

Hello,

I just saved some Tiffs with different LUTs after rendering in the save-dialog in VFB...Opened in PSD and there are all 16bit and without(!) background (from HDRI) althought it´s visible in the VFX-viewport...
How can I adjust the color-depth I wish (8/16/32bit)..and what can I do to avoid transoparent background?

When I save from C4D-native-picture-viewer I can set the depth and the Tiff comes WITH(!) the background. Doesn´t it work when saving from VFB?..or have I to adjust it somewhere before?

Thanks!

6

Jobs / Looking for freelance visualizers for archviz-projects

« on: 2018-08-26, 17:26:52 »

Hello,

due to the rising workload and some restructuring on our new location we (Vizoom) are looking for talented visualizers on freelance basis (also remotely) to help us on different architecture visualisation projects :)…We are particularly interested in long-term cooperation!

Expected:
-Advanced skills in Cinema 4D+Corona or Cinema 4D+Vray (in exceptional cases other combinations), Photoshop would be a plus, as it´s essential part of our work, particularly in exteriors.
-Ability to read architectural plans, interest in architecture, design, landscapes planning…An eye for atmosphere and composition
-Ability to work both in team and independently. Communication skills in English language (German language would be a  plus)
-We have often to deal with short deadlines (e.g. competitions) so please only apply if you would be available full-time during a project (we strive for regular daily working-time but in some projects it does not always work as desired ;))

A few words about us:
Last ten years we worked from Berlin, now we are establishing a new studio in Barcelona.
Thus, the majority of our clients is still based in German-speaking area, including some well-known architecture studios and real-estate-companies.
For more info please look on our website: http://vizoom.eu/

If you are interested, please send us a short CV, your portfolio (architectural exteriors / interiors), and your rates.
We would also appreciate the info from when you could join one of our projects.
Please write to: jobs@vizoom.es (in English) or jobs@vizoom.de (in German)
Thank you!

Artur / vizoom