Luminous Landscape Forum

The Art of Photography => User Critiques => Topic started by: Justan on May 16, 2010, 12:02:10 pm

Title: Clearing ahead
Post by: Justan on May 16, 2010, 12:02:10 pm

My first HDR pano

Five frames digitally stitched. Each frame is a HDR composite of up to 5 exposures. The exposures range in time from 15 seconds max to about .25 second min.

The image is uncropped. I like the effect.

(http://www.justan-elk.com/Images/Forest/ClearingSoonPano1.jpg)

There is some color noise that doesn’t quite show up in the image above. It appears a by product of the HDR merge. How does one reduce or eliminate this kind of noise?

Title: Clearing ahead
Post by: Dick Roadnight on May 16, 2010, 04:03:35 pm

Quote from: Justan

My first HDR pano

What camera/raw processor?
¿CSwhich or what?
Do you have a single shot for comparison, using fill/recovery?
How many pixels was it?

...looks better than most HDR pics.

Title: Clearing ahead
Post by: Justan on May 16, 2010, 05:21:51 pm

Quote from: Dick Roadnight

What camera/raw processor?
¿CSwhich or what?
Do you have a single shot for comparison, using fill/recovery?
How many pixels was it?

...looks better than most HDR pics.

The camera is a nikon d80 (10 mp)
CS3 ACR
No comparison shot but a good idea
The tiff print file was 255 mb. The work file much larger

edit: here's a snip showing some of the color noise

(http://www.explore-greenwater.com/pix/JE/Test.jpg)

Title: Clearing ahead
Post by: Justan on May 17, 2010, 01:43:25 pm

I found the answer. It's all so obvous. . .

http://people.csail.mit.edu/kapu/papers/GalloICCP09.pdf (http://people.csail.mit.edu/kapu/papers/GalloICCP09.pdf)