[HDRI] wrong luminance value of raw2hdr

[Mahlab, Seyedeh Farzaneh]

Hello
I took two series of photos, in raw format and Jpeg with canon Rebel T2i and fisheye lens 4.5 mm, of a light source. I fused jpeg images to HDR and it gave me the correct luminance (close to the measured luminance in the scene ,CF=0.92), then I generated another HDR image with raw2hdr but the luminance value of this HDR was a way off the actual luminance. What can be the possible problem ? Thank you

[Greg Ward]

Did you compute a calibration factor and set it in raw2hdr using the -C
option? You need to do that, and it won't be the same calibration factor
as the one you use for the JPEG route.

-Greg

Post by Mahlab, Seyedeh Farzaneh
Hello
I took two series of photos, in raw format and Jpeg with canon Rebel T2i
and fisheye lens 4.5 mm, of a light source. I fused jpeg images to HDR and
it gave me the correct luminance (close to the measured luminance in the
scene ,CF=0.92), then I generated another HDR image with raw2hdr but the
luminance value of this HDR was a way off the actual luminance. What can
be the possible problem ? Thank you
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