Color calibration for DT under halogen quartz lamp 3200K light

[grubernd]

Well, self-responsiblity can be called on a lot of things.

“The problem with common sense: it’s not so common.”

[SpaceDreamer]

@deejjjaaaa

it can measure spectrum of your illuminant of course … it has a diffuser for ambient light measurement.

Yes, you’re right. It was my mistake. It is a good idea to use a spectrophotometer with a diffuser feature to find out the truth.

@deejjjaaaa

provided that you don’t melt the filter in the process if your light source is a powerful halogen light

I don’t have any problems with my polarizing film filters put in front of the two 1kW halogen bulbs since I have glass between polarizing film and halogen. Also I installed small but effective 12V turbine fans from a server to cool down the halogens. To make a new photo I switch the bulbs for not more than just 5-7 seconds. So now I can put any gel filters in front of the halogens

@deejjjaaaa

t helps -for example - with S/N if you do just one shot of a target and have dark blue patches under tungsten illuminant and can’t give them good exposure to preserve some other patches from clipping in raw … plus it is better to have a single illuminant profile to be done under light somewhat closer to D50

Here within this DT forum we’re talking about software and post processing but my main concern is rather hardware. Even with the best algorithms we wouldn’t have our image improved if we lost some information on the hardware level. And we do loose some CRI when putting CTB filters (up to 10%).