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Tuesday, October 2, 2007

Manhattan Bridge HDR / SML

SML Flickr: Manhattan Bridge HDR / SML

Manhattan Bridge HDR

Canon EOS 10D
Canon 17-40 f/4L

Exposure Settings
CRW_35498: ISO 100, 30.0 s at f/9.5, 17mm
CRW_35499: ISO 100, 30.0 s at f/13, 17mm
CRW_35500: ISO 100, 30.0 s at f/6.7, 17mm

black and white version

When I shot these photos, I did not have a timer cable release with me. If I were to shoot these at a small aperture, I would have to set the camera on bulb while keeping my finger on the shutter release for the entire exposure. To minimize the risk of completely ruining the photos, I've decided to vary the aperture values for the different exposures instead of varying the time and keeping a constant aperture value.

HDR Processing
Note that it is generally not recommended that you vary the aperture values for images intended for HDR processing. If you use software like Photomatix to perform tone-mapping, for example, the varying levels of focus on the photo will create blurry results. I have had to apply a bit more USM than usual for this image. And if you view large, you can see that the grains are quite visible.

I am happy with the HDR result though--the wider aperture gave it enough exposure to show the golden reflection under the bridge, and the small aperture contribute to the oh-so-gorgeous star bursts from the lights.

Related Sets + Collection
Manhattan Bridge, New York City / Project (Set)
HDR Photography / Project (Set)
SML Photography (set)

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