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

On Wed, Feb 15, 2017 at 9:05 AM, Mahlab, Seyedeh Farzaneh <[email protected]
> wrote:

> 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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