I have had the superb VF-2 for use on my PEN's and XZ-1 for a while. Optically it is excellent but I seldom use it. Why you ask? Cause it can fall off and get destroyed or lost. The VF-3 is just touch smaller, lower resolution and magnification. It only comes in tacky silver. <a href="http://www.flickr.com/photos/colette_noir/6502166581/" title="WP_000393 by colette_noir, on Flickr"> "1024" height="768" alt="WP_000393"></a> I adore it. Why? It LOCKS IN PLACE! Bracing against one's face while shooting eye-level and with the XZ's excellent IBIS means one can shoot sedentary subjects as insanely low shutter speeds. <a href="http://www.flickr.com/photos/colette_noir/6503379503/" title="PC121118sp by colette_noir, on Flickr"> "1024" height="768" alt="PC121118sp"></a> ISO 320, F2.5, 1/13sec, 112mm-e That's right, 112mm,1/13sec, HANDHELD!