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Topics - Rhodesy

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76
[C4D] Resolved Feature Requests / Rendertime boolean
« on: 2016-03-06, 23:56:40 »
Im currently working on a scene that requires holes to be punched through bushes so rendertime booleans would be perfect for this sort of thing. I appreciate there are higher priorities though.

77
[C4D] General Discussion / Keyframing exposure settings?
« on: 2016-03-02, 13:32:25 »
Hoping someone can help. I like to use the simple exposure settings in corona rather than the trad physical camera settings as I really like being able to adjust the highlight compression to get the right exposure and I dont think you can get the same output just using the physical cam tab. However im trying to do an animation and there doesn't seem to be a way to key frame any of the exposure settings which I will need as the camera moves from inside to out. It is possible to key frame the camera tab settings like shutter speed but then you lose the highlight compression feature. Any ideas how I can get this to work? Thanks

78
I've been working on a short indoor flythrough test of an open plan living / kitchen area. Everything is looking good apart from metal highlights on the door handles are dancing away and flickering and also the AA around the skylight and window frames is quite bad against the bright sky. I have set the number of passes for each frame to be 200 which does leave a bit of grain but the render times are already 15mins per frame, SD res, on a 16 core 2.6 Xeon which is probably the maximum I can get away with doing it in house. I have the UHD Cache set to Animation with precision 1 and do previz checked. I've also upped the image filter to 1.8px to help soften it. Im also getting bad AA on highlights from one of the lights visible on the marble worktop.

So I was wondering if there was something I was overlooking or are these issues always going to occur unless I go super high on the pass count? The image in general looks good so its just annoying these things jump out at you. Many thanks for any help on this.

79
It's been a long time since I've done any motion work but I'm increasingly getting asked if I can do flythroughs for schemes. I am planning to just use simple photoshop as my editor as I don't have an ae license and to be honest might be overkill for short clips. Unless anyone can recommend an inexpensive editor that has some good colour grading and text options?

My main question is which format to save my image sequence out in? I appreciate I will be foregoing any multi pass channels going through photoshop but I also want to keep it streamlined and workable. My experience with AE from a few years ago was that I ended up with a boatload of timelines and it was difficult to keep track of everything.

Any general pointers would be really helpful. If there is a way to efficiently use multi passes in an affordable and easy to use software I'm all ears! Many thanks

80
[Max] General Discussion / Ior vs reflection colour
« on: 2015-11-29, 12:50:31 »
I'm trying to work out the correct way to create darker metals. From how I understand it I can create a metal by just using the reflective channel (c4d version so diffuse is left unchecked = black). I can then adjust the Ior upwards to around 20 to create a reflective metal. The brightness of the material increases as the Ior increases and I as I understand it metals are generally about 20. So if I want a dark metal like a gun metal should I control the brightness of the material by darkening the reflection colour value, or, by reducing the Ior back down, or both? Then adjust the glossiness to suit.

Also for other Ior values, coming from vRay I would use a value of about 3 for the majority of materials like concrete/brick/wood and maybe 5 for plastics. Is this the same in corona? I see the default range in the slider on c4d just goes up to 3 which makes me think 3 might be a bit high.
Thanks for any help on this.

81
Has anyone else noticed a big hit in passes when using third party shaders? More specifically I'm thinking of a couple of Paul Everetts, the grunge shader and also karate tiles for random map flipping. If I use either of these in a scene I get a 50% slowdown compared to not using them. Corona is still rendering fast its just noticable that the passes are going at half the rate. Is this something that would have to be changed in the plugins by Paul or is it something the corona devs can optimise at their end? As far as I know there isn't the same speed hits when using the MAX equivalents.

82
Im a C4D lurker and have tried the beta quite a bit but not on a full scene. In the tests I've noticed that you get a very heavy speed penalty the smaller the windows and the more indirect lighting you have for interiors. This makes sense as its relying on light bounces to resolve the image and a lot will be wasted bouncing around the outside of the building that can't be seen. Hence why portals are used as far as I can tell. Vray doesn't have quite the same slow down - there are other issues with artifacts but not quite the noticable slow down with smaller appertures. So Im interested to know how much of a difference portals make to corona and if you can get acceptable render times in these tricky scenes? Thanks.

83
[Max] General Discussion / How does Corona DR work?
« on: 2015-03-24, 17:55:09 »
Hello, I'm interested in how Corona handles distributed rendering over its nodes and specifically how it deals with the sending of 3rd party shaders and compatibility. Im a VrayforC4D user and have the Corona C4D Alpha, which shows great promise. I love the combination of simplicity and very high quality. I dont use DR with VrayforC4D as unfortunately you can't use the native C4D shader system or third party shaders even though you can use them fine in the host app and I use them in all of my work. I would have hoped that vray DR would have worked by the host workstation packaging everything internally as it would do for a local render and right at the point of hand over to the render engine it also sends that out to the waiting nodes. But for whatever reason it will only work with vray native shaders which is a mighty limitation in the system.

Does corona DR render everything the host workstation can render - i.e. there isn't any worries about if a shader is DR compatible or not, and if it works locally it works over the network? Im hoping it will work that way as at the moment it just uses the standard c4d shader conventions and layers and even third party shaders with no special corona specific materials. Thanks for any insight into this.

Cheers


84
[C4D] General Discussion / Editor render frame
« on: 2014-10-05, 12:09:31 »
Is it an easy fix to limit the render area in the editor window to the camera frame? Vray does this and it's really handy to see the same render area as the final picture viewer rather than the whole editor viewport. Also doesn't waste time rendering bits your not going to see.

It's probably already on the list but just incase it's not. Thanks

85
[C4D] General Discussion / Fan speed
« on: 2014-10-02, 22:40:33 »
Thanks for the 1.1 update and the test scene, that's a really useful tool and showcase. One observation though relating to performance which has me stumped; its really blazingly quick and my task manager is reporting a good 99% CPU for C4D but my laptop fan only sounds about medium speed which doesnt make sense! So just switched it to vray for comparison and as expected the fans roar right up to top speed within a few seconds.

So is corona running as fast as it can or is there something a miss? I know i shouldnt be having issue with quiet fans!

Thanks again for the great update.

86
[C4D] General Discussion / Dirt / AO shader
« on: 2014-09-13, 21:52:28 »
I know I know, AO is sacrilege to some around these parts but is there any kind of dirt shader on its way / already available in the max version? Corona is just so fast and clean it's sometimes too clean!

Great alpha release, looking forward to seeing how this develops.

Cheers

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