Comparison of Panasonic 12mm ƒ/1.4 ASPH Leica DG SUMMILUX and Pentax SMC P-DA 14mm f/2.8 ED IF

Attribute	Pentax SMC P-DA 14mm f/2.8 ED IF ×	Panasonic 12mm ƒ/1.4 ASPH Leica DG SUMMILUX ×
Aperture (f)	2.80 - 22.00	1.40 - 16.00
Filter Size (mm)	77	62
Notes	Included Accessories: Lens Hood	Manual Aperture Ring; Weather-resistant Design; Metal Lens Mount, Barrel and Hood; Included Accessories: Front and Rear Lens Caps, Hood, Storage Bag.
Closest Focus (m)	0.17	0.2
Magnification Ratio (x)	0.19	0.1
Diameter (mm)	83.5	70
Focus Details	Internal with "Quick Shift" AF/MF mechanism	High-speed AF; Internal with stepping motor; AF/MF switch
Focal Length (mm)	14.00	12.00
Diaphragm Blades	6	9
Brand	Pentax	Panasonic
Image Circle	APS-C	Micro Four Thirds
Name	Pentax SMC P-DA 14mm f/2.8 ED IF	Panasonic 12mm ƒ/1.4 ASPH Leica DG SUMMILUX
Weight (g)	420	335
Type	Wide Prime	Wide Prime
Diaphragm Blades Type	-	rounded
Lens Construction	12 elements in 11 groups	15 elements in 12 groups, including 1 ED, 2 UED and 2 aspherical elements
Diagonal Angle of View (degree)	90.00	84.00
Length (mm)	69	70
APS Equivalent	21mm	-
35mm Equivalent	-	24mm