Though autofocus is not possible with live video in any current true DSLR (the Panasonic GH1 promises this) it is possible to use pull-focus effects with a little planning. We now have a Nikon D5000 – it won the competition for best fine image detail when comparing results frame by frame with Canon’s nominally higher resolution rival. It was also a very good deal, £629 inc VAT with an 18-55mm VR kit lens and a SanDisk Ultra II 8GB SDHC card plus Crumpler Messenger Boy 2500 bag thrown in free (from Jacobs). You Tube sample –
Cameracraft magazine – Taking your practical photography further