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Submitted on
December 11, 2011
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15.9 MB
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5634×3753
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119
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3 (who?)
Comments
7
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Camera Data

Make
Canon
Model
EOS 5D Mark II
Aperture
F/8.0
Focal Length
17 mm
ISO Speed
100
Software
Digital Photo Professional
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A Study in HDR 3 by Okavanga A Study in HDR 3 by Okavanga
This set of three images, A Study in HDR 1-3, shows the results of high dynamic range imaging followed by tone-mapping for an interior scene lit by halogen lights as well as ambient light. The first image is the mid shot of 11 exposures, each approximately 1 stop apart. This shot is then the camera's automatic best exposure for the scene. The full EV range turned out to be 13.4 stops, slightly more than the Canon 5D Mk 2 working range of 11-12 EV. Auto White Balance was used throughout and the camera set upon a tripod. Manual mode was used to allow the large number of exposures to be made. The software used was Canon's Digital Photo Professional v3.9.3; Photomatix Pro (64-bit) v4.1; and Picturenaut v3.2 from HDRLabs. Apart from the HDR software the only significant post-processing was sharpening (via DPP) of the tone-mapped images followed by scaling down for posting.

The second image in the series is that from using Photomatix Pro, with its default settings. The third image is that from Picturenaut, using the Adaptive Logarithmic method and adjusted to my best eye.

This third image, from using Picturenaut, was difficult to obtain with anything like a reasonable white balance and exposure. This was the best I could do using the Adaptive Logarithmic method, but it is too warm and too bright - the dynamic range is poor. Normally, for outside daylight work Picturenaut gives good results, but this is disappointing.
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:iconsiddhartha612:
Siddhartha612 Featured By Owner Dec 13, 2011
Lovely study
Reply
:iconokavanga:
Okavanga Featured By Owner Dec 13, 2011
Hi Daniel - nice to hear from you - thanks for the comment - glad you like it.

Cheers

David
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:iconcolinbm1:
colinbm1 Featured By Owner Dec 13, 2011
Interesting series David, I have yet to try HDR.
I love the fluffy paperweights :-)
Col
Reply
:iconokavanga:
Okavanga Featured By Owner Dec 13, 2011
I hope HRH Tom does not get to hear that comment, Col. He is a weight though, especially when he jumps from a height directly onto my lap. In cat speak the unit of force is defined as the "Tom", this is mass times acceleration squared.

HDR work takes a bit of getting into, but provides interesting results.

Cheers

David
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:iconcolinbm1:
colinbm1 Featured By Owner Dec 13, 2011
:-)
Reply
:iconsiradlah:
SiradLah Featured By Owner Dec 12, 2011
This looks too bright - you know who is almost the same colour as the wall.
Reply
:iconokavanga:
Okavanga Featured By Owner Dec 13, 2011
I agree, Pamela - I was disappointed that Picturenaut could not give a better rendition for this indoor scene - it works well on outdoor natural light images. But, the shot is posted for comparison.

Many Thanks

David
Reply
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