This is probably due to the handling of clipped values in the Canon
raw files in HDRshop, but I can't say for sure as I don't have
experience with this program. You could try assembling the images in
Photoshop (CS3 or higher) to see what happens.
FYI, this list deals mostly with Mac users of Photosphere and related
tools, so I don't think you'll find many experts on HDRshop, but I
could be wrong.
Best,
-Greg
From: Brajesh Lal <[email protected]>
Date: June 7, 2010 4:22:28 AM PDT
Hi Lars,
I was referring the paper "Direct HDR Capture of the Sun and Sky"
and try to the experiment. Canon Eos 1Ds Mark II with Kodak Wratten
ND filter 3.0 is placed in upward direction to capture the sun and
sky images. Almost in 50 sec i took 7 raw images ( Canon CR2
format). f4 - 1s, 1/4 and 1/30 and f16 - 1/15, 1/125, 1/1000,
1/8000. Then calculated relative stops between them and used HDRShop
3.0 ( uses directly CR2 format) to assemble it as HDR image.
The image was having bit surroundings and clear sky was and have
direct sun.
After assembling it i got the entire HDR image with Blue color tint.
I was wondering why i am getting that Blue color tint . Is it camera
problem or ND filter or assembling software (HDRShop) or some
thing else.
Best Regards, Brajesh Lal
From: Lars O. Grobe <[email protected]>
To: High Dynamic Range Imaging <[email protected]>
Hello Brajeshlal(?)
> I took 7 Cr2 images of the sky with combination of two different f-
stops, to get the range 17 stops.
> When i assembled them i get blue tint on the final HDR image. What
can be the possible reason that i am getting blue color?
You did not give much detail on what you try to do. What are the sky
conditions - do you have the direct sun on you images? What is Cr2?
What means blue tint - I would not be surprised if the sky has a
blueish color, that is what I observe usually.
Cheers, Lars.
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