Different lighting conditions

[Antonio]

In order to have even lighting, and following the AcrCalibrator
recommendations, I created the camera profile with AcrCalibrator with
two identical 5300k studio lights at 45 degrees.

I read that this calibration should be also valid for other studio
lighting arrangements.

Is this the case even if the lighting is very different (like just one
light, or four, or combination of soft boxes and open lights. etc) but
always using the same 5300k heads?

Is it truly good enough even for outdoors lighting?


Thanks,


Antonio

[steve sprengel]

If the color of the lighting is the same in these situations then the profile should be valid.  The light-modifiers may have a slight cast, and the surroundings may reflect different colors. 

The instructions about having two lights at 45-degress has to do with having even lighting on the CC, because a gradient or vignetting can confuse the profile-calculation process.

 

Back when I was using the script, I shoot the CC in several different lighting situations, and put the color-temp and tint in the profile name so I could choose the right one based on the WB of a particualr image.  My suite of calibrations had Incandescent, Fluorescent, Daylight, Cloudy, Shade, Sunset, Twilight, Sodium Vapor, as well as a few specialized ones like Sunny-Behind-the-House for shooting flowerrs in the garden because my house has a large red-brick wall and pale-blue upper-story that give some color-cast to anything I shoot in the garden if the sun is more on the house than the flowers, so I wanted to correct for that particular environmental situation.

 

Now with the DNG Profile Editor, I create a dual-color script that has Incandescent and Daylight profiles and so ACR or Lightroom can interplation between them.  I still have spearate profiles for extreme situations such as the mercury vapor arena lighting or sunset or twilight, but can get buy with my single dual-color-table profile for most outdoor and indoor photos.

[Antonio]

hello Steve,


Thank you for your very informative response.

It makes good sense and it helps me clarify the underlying principles.

I don't know how to creat a dual color table profile, but will
research on it before I ask further.

Kind regards,


Antonio

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