Wow, that XSI sensor handles the high contrast, hard to capture and fast exposures really well. Do you use a 24-105 mm on the xsi? This kind of contrast is not at all easy to bring to fruition on the fly. The translucence of the lenticular is perfect; I usually have to wait for sunset to nail them to an image. The color puts a little meat on their bones and makes an easier target ;-p)g