Comparison of Panasonic 15mm f/1.7 ASPH Leica DG SUMMILUX and Panasonic 20mm ƒ/1.7 ASPH LUMIX G

Attribute	Panasonic 15mm f/1.7 ASPH Leica DG SUMMILUX ×	Panasonic 20mm ƒ/1.7 ASPH LUMIX G ×
Filter Size (mm)	46	46
Notes	Manual Aperture Ring; Nano Surface Coating; Available in Black or Silver; Included Accessories: Front and Rear Lens Caps, Hood, Pouch.	Also offered as part DMC-GF1 kit. Included Accessories: lens hood, storage bag
Closest Focus (m)	0.2	0.2
Magnification Ratio (x)	0.1	0.13
Focus Details	High-speed AF; Internal with stepping motor; AF/MF switch	-
Length (mm)	36	25.5
Focal Length (mm)	15.00	20.00
Diagonal Angle of View (degree)	72.00	57.00
Brand	Panasonic	Panasonic
Image Circle	Micro Four-Thirds	Image Circle
Name	Panasonic 15mm f/1.7 ASPH Leica DG SUMMILUX	Panasonic 20mm ƒ/1.7 ASPH LUMIX G
Weight (g)	115	100
Type	Wide Prime	Wide Prime
Aperture (f)	1.70 - 16.00	1.70 - 16.00
Diaphragm Blades	7	7
Diaphragm Blades Type	rounded	rounded
Lens Construction	9 elements in 7 groups, including 3 aspherical lenses	7 elements in 5 groups, including 2 aspherical elements
Diameter (mm)	58	63
35mm Equivalent	30mm	40mm