{"id":1741,"date":"2010-10-06T00:10:48","date_gmt":"2010-10-05T23:10:48","guid":{"rendered":"http:\/\/www.permuted.org.uk\/photography\/archives\/1741"},"modified":"2013-11-10T12:15:34","modified_gmt":"2013-11-10T12:15:34","slug":"an-experiment-with-hdr","status":"publish","type":"post","link":"https:\/\/www.permuted.org.uk\/photography\/an-experiment-with-hdr\/","title":{"rendered":"An Experiment with HDR"},"content":{"rendered":"<\/p>\n

As a slight change of pace I'm going back to yesterday for today's post. While I was walking the undercliff at Rottingdean I took a number of shots with a short lens, ideal for landscapes and views. One example was included in yesterday's post. In a couple of places I deliberately took several frames at different exposures. The purpose was to combine the shots to deal with the constant problem of dark and light. With a bright sky and dark foregrounds getting an appropriate exposure is not only tricky, it's probably not technically possible. Camera technology simply cannot record the full range that we can deal with in the flesh. But software can combine shots, and do a number of other clever tricks. And HDR? It stands for high dynamic range.<\/p>\n

These are the basic images used. They've had only the most basic processing done, but as is immediately clear, one has been exposed for the sky, and the other for the foreground.
<\/span> Foreground exposure<\/span><\/p>\n

<\/span> Sky exposure<\/span><\/p>\n

The challenge then arose of how to combine them. I thought about using layers in Photoshop Elements, but to be brutally honest I'm lazy and doubt I could get decent results that way. So I opted for a trial version of something called Dynamic Photo HDR<\/a>. This does a number of things, but the main functions are aligning the two shots and then mapping the light and dark areas and combining and adjusting the levels. It also allows the addition of colour toning. It adds a logo along the base of the photo, but that's easy to crop (as easy as using the software, which was wonderfully simple). I simply loaded the two images and pressed a few buttons. I overdid the colour toning, but overall the effect is impressive.
<\/span>hdr version (click for large size)<\/span><\/a>
\"Nature<\/a><\/span>
Camera note: image taken with the Canon 40D and EF17-40mm f\/4L USM lens.<\/i><\/p>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":3,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"ngg_post_thumbnail":0,"footnotes":""},"categories":[1],"tags":[665,134],"class_list":["post-1741","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-hdr","tag-landscape","entry"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\n\t\t