Messages

1

Hardware / Re: PC cases talk

« on: 2020-02-11, 12:53:41 »

Hi there.

Which case (as much compact as possible) would you recommend for a 33cm wide E-ATX motherboard? No need for optical drives. I've had several Deepcool cases, which are very compact yet allow installing these wide E-ATX motherboards, but unfortunately, they don't have any dust filters and also, I'd like to fit in three 3.5" hard drives (the Deepcool cases I've had can take only two HDDs). I like very much the Fractal Design Meshify case, but the specs say that only 28 cm (or less) wide motherboards are supported.

Thanks

2

General CG Discussion / Re: Saved Image Looks Different Than Frame Buffer

« on: 2020-01-27, 16:35:10 »

OK, I'll give it a try, let's see if I can solve that in post using masks then. The other approach you mentioned (rendering without the background and using alpha in PS)... I already tried that and unfortunately got several issues with reflection/refraction/translucency (even though I had the "Direct visibility override" checked and black color selected). Anyway, thanks a lot for all your help, Tom.

3

General CG Discussion / Re: Saved Image Looks Different Than Frame Buffer

« on: 2020-01-27, 16:06:24 »

I just tested in a simple scene, and it does indeed prevent the Tonemapping (haven't looked at LUTs, just a quick test with exposure) with either set up of tonemaps on the bitmaps through the select, or the select itself through a tonemap (though it's less setting up to just have the Corona Select go into the Tonemap).

As noted, not everything is reversible, which could be what you are running into here, especially with LUTs

OK, thanks for the explanation, Tom. Nevertheless, is there any workaround or my best bet is to render without the LUT and applied it afterward in PS to the masked geometry only?

4

General CG Discussion / Re: Saved Image Looks Different Than Frame Buffer

« on: 2020-01-27, 15:27:52 »

@Radim Razzak, did you read the warning in tonemap control texmap? It can't reverse everything. Exposure and most of tone mapping are not the problem, but i never had success in reverting LUTs, it just doesn't work.

Yes, I read it. But then the question still stands: what is the correct workflow in the interior setup with a view to the interior through a window? Thank you!

5

General CG Discussion / Re: Saved Image Looks Different Than Frame Buffer

« on: 2020-01-27, 15:26:18 »

I haven't tested a set up like this, but I believe the Tonemap control should be the last in the chain, and then the Tonemap goes into the Environment or Direct Visibility override. So it would be bitmaps into Corona Select into Tonemap.

As things are at the moment, the Corona Select is still set to be adjusted by the tonemapping, since it isn't going through a tonemap (but, haven't tested with a set up like this :) )

Thank you Tom, I tried what you suggested but unfortunately, the result is all the same.

6

General CG Discussion / Re: Saved Image Looks Different Than Frame Buffer

« on: 2020-01-27, 14:46:53 »

Here it comes: the original image from PS, the renders without and with the LUT applied and the settings. It's not the interior render I was talking about but I think on this example it's more evident. I reset the corona values to the default (switching to the scanline and back) but it wouldn't actually do anything.
Thank you for your help!

EDIT:
I forgot to mention that the background image is connected to the Direct visibility override slot, I suppose that it doesn't matter, does it?

7

General CG Discussion / Re: Saved Image Looks Different Than Frame Buffer

« on: 2020-01-27, 14:14:21 »

ToneMapControl map is bit finicky.. anytime you make framebuffer change, you have to restart the render for it to negate everything.

Yes, I knew that if you change the tone mapping parameters during the render, it would affect the background image. But that's not my case. In my case, that LUT and the tone mapping parameters do affect the background image right from the beginning.

That is particularly issue with LUTs and when and how you use them in process. Unless you're making an animation you might be better off adding that LUT in Photoshop.

Please correct me if I'm wrong, but if I render the image with its background with no LUT or Tone mapping, and apply them afterward in PS, the result would be the same, right? Or you meant that I'd need to apply a mask in PS in order to avoid that from happening?

(Btw, reflections/refractions for compositing will be added in upcoming Corona version).

And what would be the right workflow until then? Could you explain to me please how would you do that? Thank you very much!

8

General CG Discussion / Re: Saved Image Looks Different Than Frame Buffer

« on: 2020-01-27, 13:25:22 »

Thank you, Juraj for your swift answer.

You were right, it was the LUT and tone mapping which were changing the visual appearance of my background image. I thought that the CoronaTonemapControl map would avoid that from happening, but now I see that it doesn't work like that. Could anybody explain to me please, what is the right workflow then? Because adding the background image a posteriori in PS won't work for me if there are reflections and refractions involved (interior render with a view to the exterior through a window).

Thanks in advance.

9

General CG Discussion / Re: Saved Image Looks Different Than Frame Buffer

« on: 2020-01-26, 19:59:07 »

Hi there.

I am having a similar problem. The scene background image looks brighter (and the colors are shifted too) in the VFB than in Photoshop, where it was prepared. The bitmap is connected to the CoronaTonemapControl map with the Exposure/Tone Mapping/LUT disabled. It shouldn't be color profile related, as I tried saving the image in PS with sRGB profile attached and also without any color profile, it always looks brighter in the VFB.

When I save the render and open it in Photoshop, the background looks exactly like in the Corona VFB (brighter with the shifted colors compared to the original state, so there is actually something happening to the image).

The Gamma in 3DS max is set to 2.2.

Any ideas on why is this happening?

Thanks in advance.

10

Hardware / Re: Threadripper 2990WX

« on: 2018-09-19, 21:12:43 »

i just leave this here , 2019 AMD EPIC 64 core, 12k Cinebench score

https://www.hexus.net/tech/news/cpu/122222-amd-7nm-64c128t-epyc-benchmark-leaks/

For those speaking czech there is an article which explains why this is most likely to be a fake...

https://www.cnews.cz/amd-7nm-procesory-zen2-epyc-ryzen-3000-cas-vydani

11

Hardware / Re: xeon V3/V4 price vs. performance

« on: 2018-09-19, 19:25:13 »

@Radim Razzak - search on the supermicro site for your country maybe you can find a local re-seller in your country that might be cheaper then ebay or amazon and you have actual warrenty from a local place plus a possibility to get ram from them as well. I searched for the boards on ebay and amazon first the only available in Europe was in London and it costed 750 pounds without shipping not to mention the taxes my country would make me pay if I order. Finally found local re-seller on supermicro website and it costed 530 euros...

Thank you for the hint, you were actually right! I found one re-seller with really competitive prices. And as for the Platinum ES chips, do you by any chance know what is the difference between "Intel Xeon Platinum 8160 ES QL2M" and "Intel Xeon Platinum 8160 ES QL1K"? Which one is the newer stepping? Thanks

12

Hardware / Re: Threadripper 2990WX

« on: 2018-09-12, 10:54:21 »

Yeah, I've had a look round for other cases, and keep coming back to the Evolv X - I'll just have to wait until later this month to get my hands on one. Do Phantexs not realise that my other workstations are struggling and that I need to get building?!

Has anyone got any good suggestions for power supplies? I think I need to get around 1200w, and will probably get something from EVGA as I've used them before and had no problems, but if anyone knows a better option I'm all ears....

I don't know about other brands, but I quite like Corsair PSUs with i-link, which allows you to monitor different values of motherboard, CPUs, RAMs, VGA and PSU itself. I've had many Corsair PSUs and never had a single problem. I still use a 10 years old Corsair HX520 in one of my machine and no problem at all...

13

Hardware / Re: xeon V3/V4 price vs. performance

« on: 2018-09-06, 19:42:05 »

Thanks for your advice VUK. The ES 8160s look really good, too bad the motherboards are kind of expensive...

14

Hardware / xeon V3/V4 price vs. performance

« on: 2018-09-04, 13:45:47 »

Hi there,

what is the best price vs. performance CPU available on eBay for 2011-3 these days? I have a dual socket Supermicro X10DRL-C motherboard.

Thanks

15

Hardware / Re: Workstation upgrade and Render node

« on: 2017-03-01, 18:01:14 »

That's what I meant. If I had to buy a new PSU, I would definitely grab one that have two EPS12V connectors.