Camera animation test and question about colormapping vs rendertime

[sandykoufax]

Hi, all

This scene is my old scene and now I re-rendered with new PC
http://www.youtube.com/watch?v=0-Kvs...&feature=feedu
http://www.youtube.com/watch?v=MmHUf...&feature=feedu

Now I have a qustion
What makes the difference of rendertime between below images.

Exterior example


1. 3dsMax Gamma/LUT setting 2.2 / default framebuffer used / Vray Colormapping Gamma 1.0 / Rendertime 26min


2. 3dsMax Gamma/LUT setting 2.2 / Vray Framebuffer used / Vray colormapping gamma 1.0 / Rendertime 25min (output gamma override 2.2)


3. 3dsMax Gamma/LUT setting 2.2 / Vray Framebuffer used / Vray colormapping gamma 2.2 / Rendertime 34min

Another example


1. Vray colormapping gamma 1.0 / Rendertime 3m 29s (output override 2.2)


2. Vray colormapping gamma 2.2 / Rendertime 3m 39s


Vray benchmark scene


fullsize : http://blog.naver.com/storyphoto/vie...PEG%2F1to8.jpg
1 / 2 / 3 / 4
5 / 6 / 7 / 8

below gamma settings are just for comparison and similar output result;
1. Gamma/LUT Off & Max framebuffer ( rendertime : 1m 2s)
2. Gamma/LUT Off & VFB ( rendertime : 1m 2s)
3. Gamma/LUT 2.2 & Max framebuffer ( rendertime : 1m 3s)
4. Gamma/LUT 2.2 & VFB & ColorMapping gamma 0.2066 & Save gamma override 4.84 ( rendertime : 55s)
5. Gamma/LUT 2.2 & VFB & ColorMapping gamma 0.4545 & Save gamma override 2.2 ( rendertime : 1m 10s)
6. Gamma/LUT 2.2 & VFB & ColorMapping gamma 1.0 & Save gamma override 1.0 ( rendertime : 1m 2s)
7. Gamma/LUT 2.2 & VFB & ColorMapping gamma 2.2 & Save gamma override 0.4545 ( rendertime : 46s)
8. Gamma/LUT 2.2 & VFB & ColorMapping gamma 4.84 & Save gamma override 0.2066 ( rendertime : 30s)


When using Vray colormapping gamma setting;
- First exterior render : gamma 1.0 with VFB is faster
- Second Interior render : Similar
- Third benchmark render : gamma 2.2 with VFB is faster

What makes these difference?

[vjaramillo]

I don't understand it. Your images are almost exact in illumination whether you have color mapping gama set to 2.2 or 1. My images always get washed out, and I either have to use the Vray FB with a curve or adjust it in PS. What gives. My MAX LUT is set 2.2, and I use exponential colormapping. Gama set to 1.

Vince

[sandykoufax]

Vincent, in my case, I did override output gamma to match the result for comparison.