Need calibration/test scenes

[OnoSendai]

Complete covering is better, because if we have to model the whole room accurately, then we need to measure it, and know the reflectivities etc..

[Insquall]

Is exposure time going to be tied to motion blur if you ever do that?

Or only tied to the image brightness like in maxwell?

[OnoSendai]

Yup, if I ever do motion blur, exposure time will affect it.

[carbon]

ono, i suppose that would be better or necessary for you to have as much exposure combinations of cal.scn. as is usable.. from complete black to white, 1/3 ev steps.. am i right?
i will make it this weekend, i hope.....

[OnoSendai]

Perhaps a few different exposures would be good, don't go overboard tho!

[carbon]

hi ono, i am sorry, calibration is still not ready, i hope this weekend will be time and free studio
but, i have an idea, would be better to use flashlight instead of 100w bulb? i mean, i will know color temperature with flashlight, but with ordinary bulb? this may affect whole process, i can color ballance the images, but still, it will affect luminosity.. but with flashlight i will have model whole light, with mirror and so on.. now, what you think is better, to have unknown color ballanced images, or made with unknown mirror inside lightsource..

carbon

[Kram1032]

if you model the flashlight, in detail, you don't have an unknown mirror

[OnoSendai]

hi ono, i am sorry, calibration is still not ready, i hope this weekend will be time and free studio
but, i have an idea, would be better to use flashlight instead of 100w bulb? i mean, i will know color temperature with flashlight, but with ordinary bulb? this may affect whole process, i can color ballance the images, but still, it will affect luminosity.. but with flashlight i will have model whole light, with mirror and so on.. now, what you think is better, to have unknown color ballanced images, or made with unknown mirror inside lightsource..

carbon

I think a normal bulb (tungsten filament) would be better, because the power is known, and I can make the assumption that the light is emitted uniformly in all directions (not sure how valid this is in practice).
The colour temperature of tungsten is apparently around 2800K, so that's a known value.

[carbon]

Hi Ono
i finally made it, what to do now? it has about 230mb

carbon

[CTZn]

- if complete covering wouldn't possible, i can model whole studio, white walls, gray floor, big windows with metal covering (don't know the word for it ), is this also ok?

I was thinking that before reading your last post, it sure would be ok, a good approximation for geometries and materials would be enough for off cam objects, precision of course is better

[OnoSendai]

Awesome, thanks for your work Carbon.
Do you have access to an FTP server you could put the files on?
Otherwise I could give you a login on the indigo server and you could upload the files to there.
Or we could try a direct MS mesenger transfer, never seems to work tho

[carbon]

thanks, maybe i could put it on one of my websites, but i need to make some free space
one more thing, are you able to read RAW files? i can convert them to 16bit/channel tifs
or something, if you need.

jpgs are slightly different from raws, more saturated, etc.. (camera processing is guilty)

today i wanted to model the scene, and i will include original file for color chart, i bought it
because there was cd included with the chart image (but it is jpg !!!) and some xls calculator,
hope it will be useful..

EDIT: eh, in cam scheme is a small mistake, there should be INCANDESCENT not tungsten my bad English

[OnoSendai]

RAWs will do for now, I'll get back to you if I can't read them.

[carbon]

ok, i uploaded it, what is your email? ill send you link

[OnoSendai]

nickamy AT paradise DOT net DOT nz