Found this storage tank on the drive back from an aviation event. In black & white it looks much stronger. Canon 7D with a 100-400L lens. Exposure 1/1250 @f9, iso 160. Processed in Photmatix HDR and Lightroom. Used HDR process because of the contrasty early afternoon light. Adjustments in Lightroom were clarity, grain, levels, sharpening and the black & white conversion.