Tilt OSL lens

Forums: Tilt OSL lens
Newtek Lightwave 3D (exporter developed by holocube, Integrated Plugin developed by juanjgon)

Tilt OSL lens

Postby baltort » Fri Aug 31, 2018 10:23 am

baltort Fri Aug 31, 2018 10:23 am
Hi all,

Here's another lens setup I've been working on. This one has a go at simulating a tilt lens.

It works by referencing a null (I've added a grid custom object to it to make it easier to see) which defines the plane of focus. You can position this and rotate it however you like. Add an item info node (for the null) in the Octane Editor and link the position, right, and up outputs to the OSL camera pins.

Aperture and FOV can be controlled with scalar nodes.

It's not entirely physically accurate, but it's not bad. Strange things happen when you turn the camera and see past the plane of focus...

Shout with any questions or requests. If anyone makes a nice fake-macro image with it, I'd love to see it!

Happy Scheimpflug!

Cheers, James.

tilt lens.jpg
Attachments
tilt cam.zip
(775 Bytes) Downloaded 114 times
baltort
Licensed Customer
Licensed Customer
 
Posts: 52
Joined: Mon Jul 07, 2014 4:00 pm

Re: Tilt OSL lens

Postby adkkda » Mon Sep 03, 2018 6:50 am

adkkda Mon Sep 03, 2018 6:50 am
Fabulous work baltort !
Love your OSL work and wish I had me some skills in that area.

Here's a quick one for you.

Al
Attachments
Test_CBD_COL_TILT.jpg
Test_CBD_TILT.jpg
User avatar
adkkda
Licensed Customer
Licensed Customer
 
Posts: 32
Joined: Tue Aug 06, 2013 3:13 am

Re: Tilt OSL lens

Postby baltort » Mon Sep 03, 2018 10:52 am

baltort Mon Sep 03, 2018 10:52 am
Wow! These look great, Al.

You’ve achieved that macro/micro look that real tilt lenses give. I think it might look good for medical renderings too. Tilt lenses make everything feel small.

Thanks for sharing.

James
baltort
Licensed Customer
Licensed Customer
 
Posts: 52
Joined: Mon Jul 07, 2014 4:00 pm

Re: Tilt OSL lens

Postby LightwaveGuru » Mon Sep 03, 2018 12:41 pm

LightwaveGuru Mon Sep 03, 2018 12:41 pm
baltort wrote:If anyone makes a nice fake-macro image with it, I'd love to see it!


your wish is my command! :)

snip lwguru
User avatar
LightwaveGuru
Licensed Customer
Licensed Customer
 
Posts: 423
Joined: Wed Jun 25, 2014 9:34 am
Location: Germany

Re: Tilt OSL lens

Postby LightwaveGuru » Mon Sep 03, 2018 1:26 pm

LightwaveGuru Mon Sep 03, 2018 1:26 pm
hi james,

i tweak the node tree a little bit...

works perfect here! :)

Image

snip lwguru
User avatar
LightwaveGuru
Licensed Customer
Licensed Customer
 
Posts: 423
Joined: Wed Jun 25, 2014 9:34 am
Location: Germany

Re: Tilt OSL lens

Postby LightwaveGuru » Mon Sep 03, 2018 2:06 pm

LightwaveGuru Mon Sep 03, 2018 2:06 pm
here a quick testrender...

Image

snip lwugru
User avatar
LightwaveGuru
Licensed Customer
Licensed Customer
 
Posts: 423
Joined: Wed Jun 25, 2014 9:34 am
Location: Germany

Re: Tilt OSL lens

Postby baltort » Mon Sep 03, 2018 5:03 pm

baltort Mon Sep 03, 2018 5:03 pm
Hi LWGuru,

The complexity and defocused light panels are looking good, but I can’t quite make out a single plane of focus.

What are you using as the inputs for the focus point, focus up, and focus right pins? They need to be normalised, orthogonal and lie in the focus plane. You get this for free if you use the position, right, and up outputs from an item info node. If your using independent vector inputs then you’ll need to do a fair bit of maths to get a meaningful result.

Cheers,

James.
baltort
Licensed Customer
Licensed Customer
 
Posts: 52
Joined: Mon Jul 07, 2014 4:00 pm

Re: Tilt OSL lens

Postby LightwaveGuru » Mon Sep 03, 2018 7:00 pm

LightwaveGuru Mon Sep 03, 2018 7:00 pm
baltort wrote:Hi LWGuru,

The complexity and defocused light panels are looking good, but I can’t quite make out a single plane of focus.

What are you using as the inputs for the focus point, focus up, and focus right pins? They need to be normalised, orthogonal and lie in the focus plane. You get this for free if you use the position, right, and up outputs from an item info node. If your using independent vector inputs then you’ll need to do a fair bit of maths to get a meaningful result.

Cheers,

James.


Hi James,

the 3 items for focus point, focus up, and focus right are item info nodes with the same null object as "target". i build that set up also to play with different nulls to create some effects.
btw. the ship is 1,6 kilometer big. so its possible that the node tree react in that case in a different way!? ah...and i use the world coordinates from the nulls. not the local input...is that right?

snip lwguru
User avatar
LightwaveGuru
Licensed Customer
Licensed Customer
 
Posts: 423
Joined: Wed Jun 25, 2014 9:34 am
Location: Germany

Re: Tilt OSL lens

Postby LightwaveGuru » Mon Sep 03, 2018 7:12 pm

LightwaveGuru Mon Sep 03, 2018 7:12 pm
baltort wrote:Hi LWGuru,

The complexity and defocused light panels are looking good, but I can’t quite make out a single plane of focus.

What are you using as the inputs for the focus point, focus up, and focus right pins? They need to be normalised, orthogonal and lie in the focus plane. You get this for free if you use the position, right, and up outputs from an item info node. If your using independent vector inputs then you’ll need to do a fair bit of maths to get a meaningful result.

Cheers,

James.


by the way...if you save your scene and reopen it the node tree is not longer connected. you must then recompile the osl script and reconnect all the nodes.

snip lwguru
User avatar
LightwaveGuru
Licensed Customer
Licensed Customer
 
Posts: 423
Joined: Wed Jun 25, 2014 9:34 am
Location: Germany

Re: Tilt OSL lens

Postby LightwaveGuru » Mon Sep 03, 2018 7:33 pm

LightwaveGuru Mon Sep 03, 2018 7:33 pm
Hi james,

so here an example with a "single plane". you can see the polygon in front of the ship. (the polygon target the camera. look to the camera.)

here the node tree.

Image

here the render output. the grey visible polygon is the target for focus point, focus up, and focus right.

Image

snip lwguru
User avatar
LightwaveGuru
Licensed Customer
Licensed Customer
 
Posts: 423
Joined: Wed Jun 25, 2014 9:34 am
Location: Germany
Next

Return to Lightwave 3D


Who is online

Users browsing this forum: FrankPooleFloating, Google [Bot] and 3 guests

Thu Dec 13, 2018 3:52 pm [ UTC ]