see also:

• Olympus Four Thirds dSLR system
• Four Thirds lenses
• Olympus website product info

• released in 2005, it is the world's 1st lens to give f/2.0 over the entire zoom range
• now this would make a brilliant available light portrait lens with nice bokeh ~$US2500 or $A4400
• BUT weighs 1.8kg with tripod lock which is similar to Canon's 70-200mm f/2.8 IS but 1 stop faster.
• a much loved lens for videographers due to its constant f/2.0 aperture throughout the zoom range

• 35-100mm focal length = 70-200mm field of view in 35mm terms
• f/2.0 - f/22
• 21 Elements in 18 Groups, including Super ED lens and 4 ED lenses
• 77mm filter;
• close focus 1.4m = 0.09x macro
• 9 circular blades
• weatherproofed
• 96.5 x 213.5mm
• 1,650g w/o tripod adapter which weighs an extra 150g
• $2499

• SLRgear.com review