synthetic photography

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yonosoy
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synthetic photography

Post by yonosoy » Thu Jul 13, 2023 10:45 am

13 hours over a pure 8K 16:9 format. Supersampling 3. Downsized to 4K with a 92% of compression.
MTL parameters : large mutation probability 0.72, maximum change 0.017
Canon 24 mm objective with a film of 20 milimeters width.

It seems like a mixture of paint, photography and cartoon. Is a perfect marriage between art and technology (my feelings complain against the diningroom as an artistic field, but well, all the intentions are there...).

MTL is image size dependent. Over a 8K format it gives a perfect photographic grain. In a range of 30-50 hours of processing it is possible to obtain a good 4K photography.

First attempt over this interior. Simple. Texture are free from internet, not the best at this moment. First attempt... A day of work with render time included. High contrast for the tones of the furniture that gives a dark image in general. Sun & Sky as lonely light source.

This exercise gives me the possibility to train for a possible professional collaboration to offer this workflow...
salon 01.jpg
Canon 24 mm v01.rar
C4D scene, Houdini file.
(2.96 MiB) Downloaded 212 times
"... nor 0.2 galaxys, nor 0.8 little chikens ..."

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yonosoy
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Re: synthetic photography

Post by yonosoy » Sat Jul 15, 2023 1:30 pm

8K, format 1:1, 24 mm film. A better focus. The spherical lost of focus is very interesting. There is some kind of optical vignetting, the diaphragm is 2º opened (some milimeters, is difficult to determine the correspondent F-stop).

process image, 45 min.
Left (processed), Right (EXR indigo´s output).
45 minutes.jpg
salon 03.jpg
15 hours.
salon 02.jpg
15 minutes, 4K, format 16:9. Indigo´s camera...
salon 02_indigo camera.jpg
"... nor 0.2 galaxys, nor 0.8 little chikens ..."

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yonosoy
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Re: synthetic photography

Post by yonosoy » Sun Jul 23, 2023 10:59 am

Look how the light changes between the use or not in the scene of glasses (sgg planilux).
Sadly there are problems with the primary ilumination. Specially with fabric material.
salon 04.jpg
salon 05.jpg
Here 5 minutes of the scene with indigo´s camera, there is not so brutal difference (maybe some more light in the second take above) and there is no problems with materials and primary ilumination...
salon 07.jpg
salon 06.jpg
"... nor 0.2 galaxys, nor 0.8 little chikens ..."

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pixie
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Re: synthetic photography

Post by pixie » Tue Jul 25, 2023 10:31 pm

Great work! As always!

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yonosoy
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Re: synthetic photography

Post by yonosoy » Fri Jul 28, 2023 5:27 pm

Thanks pixie!
I´m not very happy with this actually... Can´t find scenes of my taste for test.

It may be difficult (I wait a lot of years for the connection of Indigo with Houdini), but I will start to model my own scenes to feed the thread. More than difficult it may be slow...

Not happy too with the actual situation of this kinf of excersice. Before some time working with minor problems, now I can not install glass panes, the inter-lenses vacuum don´t work anymore, and the cam gives some kind of brightness from the diapraghm in the center of the photographies... I´m modelling a new objective to test the behaviour. I must try to fallback to a precedent version of indigo to ensure that all is OK.

Will see, thanks again for the consideration!
"... nor 0.2 galaxys, nor 0.8 little chikens ..."

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yonosoy
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Re: synthetic photography

Post by yonosoy » Tue Aug 01, 2023 5:13 am

Sigma 56 mm. Pure 4K, format 16:9. Without post-production. One hour each.

Warning: camera contained in more than one medium, forcing empty/vacuum medium.
This message appears when I put inter-lenses vacuum in the scene. The aspect of the image is this:
salon 03.jpg
Without inter-lenses vacuum:
salon 04.jpg
The mix:
salon.jpg
The aperture:
salon aperture.jpg
"... nor 0.2 galaxys, nor 0.8 little chikens ..."

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yonosoy
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Re: synthetic photography

Post by yonosoy » Wed Aug 02, 2023 1:10 am

This objective is more correct.
Inter-lenses vacuum installed with another procedure.
24 mm vertical film. Corrsponds with a 90 mm cinema´s camera, so let me investigate a little more.

9:30 hours, 2000 samples/pixel.
salon 05.jpg
Sigma 56 mm.rar
Cinema file, Houdini file, Allembic file.
(1.06 MiB) Downloaded 184 times
"... nor 0.2 galaxys, nor 0.8 little chikens ..."

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yonosoy
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Re: synthetic photography

Post by yonosoy » Mon Aug 07, 2023 6:02 am

Now corresponds with a 72mm, perspective mostly corrected. But, the IOR of the flint glass is impossible (1.28).
Don´t know...

8K, downsized to 4 K, 800 spp, 12:30 hours.
salon 10.jpg
salon 10_01.jpg
salon 10 aperture.jpg
"... nor 0.2 galaxys, nor 0.8 little chikens ..."

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pixie
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Re: synthetic photography

Post by pixie » Mon Aug 07, 2023 11:42 pm

Interiors should be hell to test this kind of lens... wouldn't it be wiser to use an external scene to tweak the lens and see how they work?

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yonosoy
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Re: synthetic photography

Post by yonosoy » Tue Aug 08, 2023 9:03 am

Maybe some nature?
I don´t know if atmosphere works now for lens systems (with a mesh as sun yes)...
With a little bit complex houdini´s vegetation and landscape and some ISL (so many times... Sergio always want to share the workflow..., maybe it is the time to do it).

Maybe I will try something...
But interiors is not exactly a hell actually.

Maybe it is important to explain in detail the model, assemble and use of lens systems. And to shown how it work!
Maybe it is a crazy fall in love and the differences that I experience with synthetic photography don´t deserve the effort...
"... nor 0.2 galaxys, nor 0.8 little chikens ..."

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pixie
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Re: synthetic photography

Post by pixie » Tue Aug 08, 2023 5:53 pm

I say that because interior scenes are notorious slow to render, GPU don't help as much as it could either since you cannot use portals, even with lights as windows is a bit slow from my experience, while exterior scenes are fast as hell.
Maybe it is a crazy fall in love and the differences that I experience with synthetic photography don´t deserve the effort...
That's good love! :)

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yonosoy
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Re: synthetic photography

Post by yonosoy » Thu Aug 10, 2023 6:53 pm

Even with 13 million of instances for the carpet, interior is faster than a simple plane in exterior with sun & sky system (captured window, same position).

This is a 5 hours render of lens flares, with a LUT that camouflage the noise. In this case (only extra atmospheric sun), the speed is more than double the interior. I found this last render very noisy (maybe MTL values).

I´m agree with you, if love exists, is somewhat something like this... :)
It can let you as a fool... :)

The pattern is more interesting than what I obtained till now with the canon 24 mm.
lens flares.jpg
aperture.jpg
"... nor 0.2 galaxys, nor 0.8 little chikens ..."

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yonosoy
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Re: synthetic photography

Post by yonosoy » Thu Aug 31, 2023 2:54 pm

MTL values: large mutation probability 0.2, max change 0.01

4K, downsized to 2K, 15 hours, 1400 spp.
Definitively, is better to launched the image in 8K and downsized to 4K. MTL is image size dependent...

Version 02 of the objective Sigma 56 mm. Now the perspective is correct, but the flint IOR is 1.24, and this seems to be not correct... Maybe there are another pair of IOR (of crown and flint) more correct. You must reconnect all the allembic objects.
sigma 56 mm 01.jpg
sigma 56 mm v02.rar
Houdini file, allembic file, Cinema 4D file
(959.25 KiB) Downloaded 145 times
Last edited by yonosoy on Thu Aug 31, 2023 2:59 pm, edited 1 time in total.
"... nor 0.2 galaxys, nor 0.8 little chikens ..."

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yonosoy
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Re: synthetic photography

Post by yonosoy » Thu Aug 31, 2023 2:57 pm

I see now that the perspective is the same of the last post.
But in cinema 4D the consideration of the camera change from 100 mm to 59 mm. Don´t know why...

Maybe is because the format is vertical?
:) complex... For the protoestudios thread, the format is horizontal and now is correct, again, don´t know...

The format (vertical horizontal) is compensed with the film size, so is correct now.
"... nor 0.2 galaxys, nor 0.8 little chikens ..."

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yonosoy
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Re: synthetic photography

Post by yonosoy » Thu Aug 31, 2023 3:22 pm

In order to fine focus, you must move forward and backward the "enfoque" group.
If you do this, don´t forget to adapt through points the "vacio camara" and "cuerpo" components. They are selected, you only must move they. I think that the two groups of lenses inside "enfoque" don´t moves at the same time, don´t know.
vacio camara.jpg
cuerpo.jpg
"... nor 0.2 galaxys, nor 0.8 little chikens ..."

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