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Guess which one is HDR?

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Brian Mosley

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Hello everyone,

I used Photomatix to blend (average) three exposures of this image, at -2 EV, 0 and +2 EV converted from a single RAW file in Lightzone.

I then reimported the averaged TIFF into Lightzone and finished my PP work, with the Relight tool and B&W conversion.

I did the best I could with a single RAW conversion in Lightzone.

Can you guess which shot is the HDR processed image?





Kind Regards

Brian
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Number 2

Thomas J. Kolenich
 
My guess is the 2nd picture. The cloud has more detail and the shadow area on the top right kinda give away :)
 
--
Make it a Great day!
 
the dark brick vs the lighter mortar doesn't like right.

That seems very common in HDR blended images.
 
I know what it does. I can spot a Photomatix image at 100 meters. So, I'll make a fool of myself and guess wrong by saying #2.

Then again, my wife says I don't need to go to any extra effort to make a fool of myself. I do it just fine without even trying.

--
Cheers,

Jim Pilcher
Colorado, USA

'Begin each day as if it were on purpose.' -- Mary Anne Radmacher
 
i'm stumped. i started writing one thing, based on contrast, then changed my mind. now....

basically, i think i could get either result with LZ. it's that powerful.
 
If HDR is this subtle, does it make a lot of differnce?

Good exercise though.
--
Thomas J. Kolenich
 
I think #1 is the HDR image.

In #1 you see more detail in the clock face (which is what I'm guessing you were targeting in your HDR processing, since everything else in the picture looks pretty much the same).

Also, the nice contrast in the sky seen in #2 flattened out in #1 as a result of the HDR processing.
 
This exercise has opened my eyes to how powerful the standard tools are within Lightzone right now.

As you may know, I've been campaigning for multiple RAW converter layers within Lightzone... and I still think that will give even greater access to the full dynamic range available in RAW.

However, I have to say, with a growing familiarity of the standard Lightzone tools, and selective masking you can squeeze an amazing amount of Dynamic Range from the E-400 RAW files.

I know that for true HDR imaging, you need to have multiple exposures - but I'm uneasy with how that might affect overall image sharpness and pixel level detail, so it's more interesting to me to see how much of the RAW image data can be accessed. I think Lightzone is simply incredible in this regard. The Relight tool is phenomenal, especially when you learn the subtleties of how the layers are applied using multiply / screen etc.

Kind Regards

Brian
--



Join us for a photographic safari in the Heart of England...
Saturday 27th to Sunday 28th October 2007
Click here for details...
http://forums.dpreview.com/forums/read.asp?forum=1022&message=24737378
 
Thomas Kolenich said:
If HDR is this subtle, does it make a lot of differnce?

Good exercise though.
Click to expand...
Hi Thomas,

The difference is not subtle to my eyes. The clouds and the stained stonework to the right of the door caught my eye immediately. The brightening of the left-hand tree is a hallmark of Photomatix HDR processing in my experience, although that's a more subtle change when you do not have side-by-side images to compare.

And, of course, HDR processing can go completely over the top:



I made this image from a single ORF file. The grass is too green, the brick too red, and the trim color completely wrong (moving toward blue from dark dark green. And, there's the famous HDR halo around the spruce.

--
Cheers,

Jim Pilcher
Colorado, USA

'Begin each day as if it were on purpose.' -- Mary Anne Radmacher
 
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