LWF setup file for 1.5 SP1

V-Ray V-Ray for 3ds Max General
1

Hi kids. As I mentioned in this post I’ve been following the LWF method described by Lele and have been generally pretty happy with the workflow. I’ve been working on quite a few long timeline projects and haven’t been able to transition to the new sun/sky/camera model that is part of the latest 1.5 SP1 release. Now I finally have new projects to work on. Huzzah! And I’m reworking my LWF to use the new sun/sky/camera model. I tried using math to set the ISO value, but I just ended up with a burning sensation at the back of my head, so I just tinkered until I got a value pretty close to white for a surface perpendicular to the sun. I set the F-stop to 8, shutter speed to 100 and adjusted the ISO to 44. The diffuse color/bitmaps have the RGB multiplier adjusted to .255. I did not adjust the reflection color. I tried .255 for reflection, but it just didn’t look right. Please let me know if I have screwed up somewhere.

To use this file correctly you must change the Gamma setting in Max.
LWF_004.zip

2

Looks good. Just curious about why you adjusted the ISO instead of the shutter speed?

3

Clifton is getting at standard photography, which you would normally adjust the shutter speed instead of the iso.

-Colin

4

very thanks to you, it’s a great scene to test the LWF. very usefull

is there the same settings for camera standard ? We use a lot of them for “boxe rendering” and it isn’t possible to do with vray cam (strange also)

5

You would need to use color mapping and/or turn down the sun brightness to approximate the exposure you would get from the physical cam

6

File won’t open in Viz 2008, which version of max did you use please?

7

My mistake…works fine. Please ignore my stupidity!

8

Yeah. You can get a similar result with F8, Shutter Speed 225 and ISO 100. Actually these settings seem a bit more “natural” don’t they. So, just adjust to suit your taste.

9

Am I right in thinking that this method does not work for interiors though.

10

Of course. You would need to increase the shutter speed for interiors… Just like in real-life.

11

OK, but would the .255 output still apply?

12

Don’t know… I don’t use that method. Isn’t it for gamma correction of vray colors? If so, it would apply regardless. LWF is not scene dependent.