We’ve already seen some sample footage from Canon’s new professional EOS-1D Mark IV DSLR (and should be seeing plenty more come December), but a pre-production version of the camera has now turned up at the Canon Pro Photo Solutions 09 show in London, and TrustedReviews managed to get an early hands-on with it. As you might expect, the camera definitely seems to impress in person, with the 1.2 kilogram body providing a feeling of “solid reliability and competence,” while its ergonomics also apparently represent a more subtle but welcome improvement over previous Canon offerings. Unfortunately, the folks at TrustedReviews weren’t able to share any sample shots, but they did get a chance to try out the camera’s 45-point autofocus system, which is said to be “extremely fast,” and its tracking function reportedly had no trouble focusing even in dark, low contrast situations with a 400mm telephoto lens. Hit up the link below for a few more hands-on shots and impressions.