Sunday, March 23, 2008

#27 Church Steeple


This is the Adventure Community Church in Duvall, Washington. I took the original RAW file and ran it through the Photomatix software to tone map it. The "layer cake" was as follows, from the bottom.

1. Background layer, original shot.
2. RAW file converted to HDR and then tonemapped to a tiff file in Photomatix.
3. Curves adjustment layer.

Masked the tone mapped cross on the steeple to show the background cross - it looked better.

Photo EXIF info: Canon 20D EFS 17-55 IS in manual mode at f/7.1 for 1/250sec, iso 100 at 35mm.

Original shot...

Friday, March 21, 2008

#26 HDR House


I drove by this house over at the end of Avondale road in Woodinville WA. I thought it would make a first serious study in HDR. I learned a lot from this shot.

Important Lesson #1: I really need to use a cable release and maybe mirror lock-up. I put the camera on a tripod but using my finger to trigger the shutter moved the camera too much between the 5 exposures I took on this house - it really impacted my post processing.

Post Processing: Since my pictures did not line up real well in HDR processing within Photomatix, I was forced to transform one of the RAW images and tonemap it to help out in some of the problem parts of the HDR image. Amazingly the difference between the true HDR image and the single RAW tone mapped image were not that significant. Most of the house is the single tone mapped RAW image.

I exposed 5 frames at 1 stop exposure from -2 to +2 exposure.

Starting from the bottom. The 0 exposure was the background layer.
Second layer was the HDR image from photomatix. Opacity at 82%. The exposures did not line up so I needed the third layer. Mostly used the sky of the HDR image.
The top or third layer was the Photomatix single RAW file tone mapped image. Most of the house was the single RAW tone mapped image. I masked the sky to show the HDR sky which was much better.

Thursday, March 20, 2008

#25 Trees of Alpental


This was taken on the Edelweiss Chair looking at Gunmont run. Alpental Ski Resort, Snoqualmie Pass, Washington.

See post #16 Alpental Skier, picture taken from same place about a year apart.

Lots of Processing on this file. From the bottom.

1. Original shot, background layer.
2. Apply a pretty radical gaussian blur to the background for layer 2. Opacity at 38%
3. Over sharpen BG layer. Mask out the trees except for the foreground tree. Therefore the snow, center tree and sky show through and are super sharp.
4. Monochrome Channel Mixer adjustment layer, use gradient mask to show only bottom third of image. Makes tree trunks go black.
5. Curves adjustment layer.
6. Curves adjustment layer with mask to apply to sky only. Pop the blue in the sky.

Saturday, March 1, 2008

#24 Sea Lion Cave - HDR - actually tone mapped.


Semi - HDR version: I took this at Sea Lion Cave on the Oregon coast just up from Florence OR. This my first attempt at using Photomatix on one RAW file as input. I think it is a significant improvement. Note that I layered the original under the HDR image from Photomatix. I masked the HDR water out, it looked too brown. Pulled down the opacity of the HDR layer to 78%.

Photograph EXIF info:
Canon 20D using EFS 17-55 IS at 55mm for 1/15 seconds @ f/2.8, iso=800.

Below is the original shot.