Second only to rocky streams, rusty metallic objects just mesmerize me for some reason I can't quite express. The more texture and color the better and I will literally spend hours making images. This particular image is made using 24 exposures combined using Photoacute. The resulting file is 200MB and measures about 2'x3' at 300dpi. Hard to discern in this web image but this technique produces far better large images from my 21MP 5D MKII than I can achieve by upsizing through interpolation in Photoshop.