romullus wips

[romullus]

Couple pics of retro keyboard that i modelled recently.

[Ondra]

offtopic: you should update your signature ;)

[NicolasC]

Lovely keyboard !! very nice :)

[romullus]

Lovely keyboard !! very nice :)

Yeah, i would love to have one, but the price...

offtopic: you should update your signature ;)

Oh come on, the report was closed just 5 minutes ago and i was waiting for the fix like forever :] Anyway, thank you for the fix! The only thing that left now, is to figure it out how to use compositing mode properly :]

[tomislavn]

Yeah, i would love to have one, but the price...

Price is around 100-110€ on Amazon :O That's not much at all for a mechanical keyboard with those cool retro looks :)

EDIT: Actually the leather one is more like 180-200 though :D just noticed!

[romullus]

I did some tests with advanced bokeh settings, tried to find optimal values. I think that for most realistic results i will try to stick with 0 - 0,7 range for center bias and -1 - 1 for vignetting. It looks like at more extreme vignetting values, image corners starts to resist to blurring - something i never noticed in real photographs. With center bias set at 0,8 and more, bokeh starts to resemble image taken with mirror lens and negative values just gradually brings everything back in focus.

Attaching set of images with vignetting set to 1 and 1,5. At 1,5 cat's eye effect is more prominent, but image corners looks really bad.

[maru]

I also noticed that the corners are quickly becoming too sharp and too dark. I am not sure if this is something that happens in real life, especially the darkening, but maybe there are some ways to prevent it?
In the images I found online the "cat eye" is often very pronounced, but at the same time the corners are bright.
http://toolsandtoys.net/wp-content/uploads/2015/07/Olympus-40-150mm-Pro-Lens-Review-57.jpg
https://phillipreeve.net/blog/wp-content/uploads/2017/08/Sony_FE_vs_GM-01149.jpg
https://www.mu-43.com/gallery/data/500/marina-flower-small.jpg

[Ondra]

I also noticed that the corners are quickly becoming too sharp and too dark. I am not sure if this is something that happens in real life, especially the darkening, but maybe there are some ways to prevent it?
In the images I found online the "cat eye" is often very pronounced, but at the same time the corners are bright.
http://toolsandtoys.net/wp-content/uploads/2015/07/Olympus-40-150mm-Pro-Lens-Review-57.jpg
https://phillipreeve.net/blog/wp-content/uploads/2017/08/Sony_FE_vs_GM-01149.jpg
https://www.mu-43.com/gallery/data/500/marina-flower-small.jpg

The darkening is physically based, as the basic fenomenon that creates the cat eye effect is occlusion of the lens aperture. My best guess is that the photos are corrected in postproduction (AFAIK removing vignetting is one of the easiest and most prevalent corrections... or at least it was when I was playing with it ;)). It would be interesting if anyone is able to produce such effect with real camera to confirm this

[romullus]

Novadays most cameras does vignetting and some other abberation corrections internally, so if picture was shot to jpeg, most of its vignetting is already removed by a camera. There's plenty of profesional lens reviews on the internet and it clearly shows that most fast wide lenses (basically those who "suffers" from cat's eye effect the most), has plenty of vignetting. I think Corona does everything right here :]

[romullus]

My next wip, Iranian truck. Model is from grabcad, i just added some minor details, fully unwrapped and started texturing it, Texturing is at the very early stage, basically just a bunch of materials dropped onto the model in the Substance Painter. Enviroment is a scene i made a year or so ago, mostly out of a free models gathered in the internet. New AI denoiser was used, mainly because the scene already barely fits into my 16 GB RAM :]

[Juraj]

So the whole car is unwrapped ? Where do you generate your curvature map ? I will need to do something similar very soon and I think it might be less hassle then going procedural in corona.

[romullus]

Yes, whole car is unwrapped. Curvature, along with other maps, was baked in the Substance Painter. The process is very easy and straightforward, just load your mesh, choose resolution and press bake. I've heard that Marmoset Toolbag 3 has even better baker now.

[Juraj]

How do you export the mesh ? Per material groups ?

[romullus]

Yes, i had separate objects for each material, although you can merge everything into single object and use material IDs. I think it would be the same as having the separate objects.

[Juraj]

Thanks, last question and I'll wish you happy weekend :- ). What Subdivision is best to export for the curvature & painting ? First one that appears smooth or the final one intended for rendering ? ( I presume such one could be very heavy for painting )