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Pre-IFA 2009: Panasonic has announced the LUMIX G 20mm F1.7 ASPH, a pancake type lens that has been designed to complement its latest GF1 Micro Four Thirds camera. With a 40mm-equivalant field of view, the lens measures just 25.5 mm (1 inch) in length and weighs only 100 grams. The optical design comprises seven elements in five groups, including two aspherical elements to minimize distortion and chromatic aberration.
September 2: 2009: Panasonic unveiled a new pancake interchangeable lens called the LUMIX G 20mm / F1.7 ASPH. (35mm camera equivalent: 40mm) as a new member of the LUMIX G Micro System. The new LUMIX G 20mm / F1.7 ASPH. Features a dramatic compactness and light weight despite its F1.7 brightness allowing a beautiful soft focus for photos to be even more impressive.
Comprising of seven lenses in 5 groups, the new lens system uses two aspherical lenses most effectively to minimize both distortion and chromatic aberrations, achieving super high resolution corner to corner. The versatile 20mm of focal distance(Equivalent to 40mm on a 35mm film camera) is suitable for wide variety of occasions from daily snapshots including sceneries like sunsets and dimly lit indoor shots to the deliberately creative shots taking advantage of its beautiful soft focus.
When mounted on the LUMIX G Micro System Cameras, the LUMIX G 20mm / F1.7 ASPH. allows use of the advanced contrast AF system, which includes a Face Recognition function, for more convenient, more enjoyable shooting.
Seven blades give the aperture a rounded shape that produces an attractively smooth effect in out-of-focus areas when shooting at larger aperture settings. The new LUMIX G 20mm / F1.7 ASPH. lens also features a highly reliable metal mount, and uses multi-coated lens elements that minimize ghosts and flare to further enhance its optical performance.
|Focal length||20 mm|
|35mm equivalent focal length
|Diagonal Angle of view||
• 7 elements/5 groups
|Number of diaphragm blades||
7, Circular aperture diaphragm
|Minimum focus||0.2m / 0.66ft|
Approx. 0.13x / 0.25x
|Filter thread||• 46mm|
Front and rear caps
|Weight||100 g (3.53 oz)|
|Dimensions||63mm diameter x 25.5mm
(2.48 x 1.00 in)
|Lens Mount||Micro Four Thirds|