Rick mcEvoy Architectural Photography Blog

Spinnaker Tower, Portsmouth

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

http://www.spinnakertower.co.uk/

For more information about Adobe Lightroom visit

http://www.adobe.com/products/photoshop-lightroom.html

For 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.

Visit my website for more information and photographs at

www.rickmcevoyphotography.co.uk

Rick McEvoy Commercial Photographer in Dorset, Hampshire, South, London