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]> Sent: Mon, June 7, 2010 1:01:29 PM Subject: Re: [HDRI] HDR 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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