This is the edited version of the HDR composite that I posted previously.
This image comprises of three separate images, all taken on my Canon Eos 5D, with a 17-40mm F4 L lens and an aperture of F16, ISO 400. I like to use AV (aperture value or aperture priority) mode on my Canon EOS 5D. By having to set the aperture myself, I have to consider the depth of field, and also to a lesser degree pure image quality. Generally on pro DSLR lenses the middle apertures give the best quality, and I tend to favour f8 for most shots. For this image however I chose f16 because I wanted the foreground detail to be sharp. In architectural photography shutter speed is only an issue when it comes to camera shake, not a problem on a sunny day with a well lit outdoor scene such as this one.
The three separate exposures were achieved by using auto-bracketing, which in AV mode means that the shutter speed is changed. The three images were exposed at shutter speeds of 1/100th of a second, 1/200th of a second and finally 1/50th of a second.
The three exposures were
then selected in Adobe Lightroom, and using the plug-in for Photomatix 4.2,
selected to merge in for HDR Photomatix 4.2. The next step is that 3 No Tiff
files are generated, one for each RAW file, which are then merged in Photomatix
4.2 to form a single Tiff file. In Phototmatix you are presented with numerous
different effects, I tend to go for the most natural looking result unless I am
after a specific effect.
The previous image I posted was exported from Adobe Lightroom as a Jpeg for
publishing. For this image however I have performed further editing on the Tiff
file before exporting as a Jpeg. The original RAW files remain unaltered in
Adobe Lightroom, as new Tiff files have been created of each image. Photomatix
then produces a further tone mapped single Tiff file, which is the merged HDR
file.After such processing the adjustments in Lightroom have to be relatively minor, so all I have done is minor tweaks to the image. When working with tone mapped images, anything but minor tweaks look unnatural. Sometimes I do minor corrections before the HDR merge, especially white balance and any necessary lens corrections.
For more information about the Spinnaker Tower visit
For more information
about Adobe Lightroom visit
http://www.adobe.com/products/photoshop-lightroom.htmlFor more information about Photomatix 4.2 visit
http://www.hdrsoft.com/download/win.html
Rick McEvoy Architectural Photography. Rick is a professional photographer based in Poole, Dorset, specialising in building, property, architecture and construction photography.
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