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Submitted on
December 11, 2011
Image Size
2.5 MB
Resolution
2048×1365
Submitted with
Sta.sh
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221
Favourites
4 (who?)
Comments
20
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Camera Data

Make
Canon
Model
Canon EOS 5D Mark II
Shutter Speed
1/2 second
Aperture
F/8.0
Focal Length
17 mm
ISO Speed
100
Date Taken
Dec 11, 2011, 1:19:30 PM
Lens
EF17-40mm f/4L USM
Software
Digital Photo Professional
Sensor Size
13mm
×
A Study in HDR 1 by Okavanga A Study in HDR 1 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 first image shows a warmer tone than my eye would see, but covers a good dynamic range, particularly the view out of the window, the computer screens, and the prints on the walls. The main failings are in the shadow areas with no tonal differentiation of the "black" carvings on the window ledge, nor any of the seat in the foreground and the dark areas associated with the computer and printer etc. An exposure of perhaps 2 stops more might bring such details out, but at the expense of blowing lighter areas (the lamp bulbs are already blown).
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:iconinsolitus85:
insolitus85 Featured By Owner Dec 10, 2012  Hobbyist Photographer
Hi David,

If you like experimenting with all these different programs. I found two programs called Oloneo HDREngine / PhotoEngine, which might hold your interest too.
I only made a few HDR images with the HDREngine trial, but I was quite pleased.

One of them is on dA, you have seen it already: [link]


The scenery of this photo reminded me of the PhotoEngine promo video though. They claim the program can give you full independant control over every lightsource in your photo. Here's the video: [link]
A bold claim if you ask me, and I really wonder what it does to a photo like this! ;)
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:iconokavanga:
Okavanga Featured By Owner Dec 11, 2012
Hi Rowan - thanks for the comments and link - I've bookmarked the site and shall try out the offer later when I have a 30 day period in which I can test it. Your result was particularly impressive, but then I guess your starting images were pretty good.

There is lots of HDR software now on the market - have you tried Artizen or the FDR system? I think that we are at the stage where other facilities such a DoF stacking or pano options are needed to allow differentiation of the products.

Cheers

David
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:iconinsolitus85:
insolitus85 Featured By Owner Dec 13, 2012  Hobbyist Photographer
Hi David,

My starting images weren't bad, they just needed a little spark.

I haven't tried either of them yet. I just looked up Artizen, it's panoramic options might be fun to play with sometime :D
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:iconokavanga:
Okavanga Featured By Owner Dec 14, 2012
:thumbsup:

David
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:iconmy-he-art:
My-he-art Featured By Owner Dec 29, 2011  Professional Photographer
BTW: Nice to see a glimps of your workspace!!!...and the cat doesn't care...hihi
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:iconokavanga:
Okavanga Featured By Owner Dec 30, 2011
:iconthumbsupplz:
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:iconmy-he-art:
My-he-art Featured By Owner Dec 29, 2011  Professional Photographer
This one is my favorite!!! :)
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:iconrichardjwakefield:
richardjwakefield Featured By Owner Dec 15, 2011
I like the richness of 1 , the Photomatix (2) does work for the HDR elements of the project and I'm not wowed by the Picturenaut (3) at all > is that what was expected ??
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:iconokavanga:
Okavanga Featured By Owner Dec 15, 2011
Good points, Richard. We could tweak this to give a better apparent dynamic range, although we could not get the clipping back from the over-exposed lamp. The Photomatix shots I think work very well, brining out the shadow areas, but Picturenaut was a disappointment for these. I think it works well with natural light but has failed here.

Cheers

David
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:iconintergrativeone:
Intergrativeone Featured By Owner Dec 12, 2011  Professional General Artist
Arwen and Tom seem comfortable... The difference in the three images is interesting. I have not tried HDR, but so many have. This was a good means of understanding it. Is Tom the one by the computer?
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