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original size 1600 x 1331 resized to 1280 x 905, pmc, maxdepth 10, maxsamples 10 000, time, 7 hours, 24 minutes, 9 second ( a lot time ) done with 2 gtx470
regards

very nice and clean!

try to do this:

delete the sun and eventually glass behind the windows, they will slow down the render.

Put 3 planes, mesh emitter with kelvin temperature set at 7500 behind the windows

back of the camera another mesh emitter with temperature set at 4500

don't use sun

search on the web for Marco Podrini's renders, he uses Arion and goos techniques to illuminate archviz interiors.

Thanks for your tips. What size is the emitter behind the camera ?
I like your work. Do you buy Arion 2 ?

hi gabrielefx thank you for you comments, i been used 4 light, one in each windows and another behind the camera, i add images to see the light
hi rickky, the light are simple ligth portal with a different values
my problem is the time, 7 hours is a lot time to an image of 1600 x 1331 with 10 000 maxsamples and 10 maxdepth, i think so that by myself
what do you think about the time gabrielfx ?
regards

merid888 wrote:hi gabrielefx thank you for you comments, i been used 4 light, one in each windows and another behind the camera, i add images to see the light
hi rickky, the light are simple ligth portal with a different values
my problem is the time, 7 hours is a lot time to an image of 1600 x 1331 with 10 000 maxsamples and 10 maxdepth, i think so that by myself
what do you think about the time gabrielfx ?
regards

I think that the time is justified for two 470s

I never reach 4-5 Msamples-sec with closed spaces with 2-3 windows (pmc)

To help the light you should boost the banks behind the windows and behind the camera

dont' use the same light temperature, always mix cold and warm lights

thank you for the tip gabrielefx about the lights
the maxdepth 10 is a good value or should be less, i mean 2-3 ?
maxsamples is ok in 10 000 ?
or the size is the last parameter to get a nice and clean image ?
regards

check out this thread; helps with getting faster results...

http://render.otoy.com/forum/viewtopic. ... =despeckle

hi gueoct, y been readed this post, never i could never do that about 2x or 4x, i think so i don't understand the words od radiance
regards
i will read again the post
nice weekend

ahhh, but away, this post of radiance http://render.otoy.com/forum/viewtopic. ... =despeckle is to standar octanerender not to 3ds max version
my image was done into octanerender for max
but thank you for you comment

try to do this:

put your all Octane lights in a layer, turn it off

leave on the sun

substitute all Octane lights with mesh planes, check the correct orientation, add a diffuse + black body mat

For ies emitters create a circle, turn it in a editpoly, check orientation, add a diffuse + black body + ies distribution texture, check texture rotation.

Without realtime directional native Octane lights (except the sun) you will get more speed.

ps
disable all movable proxies.