Panasonic/Leica's compact wide prime — same as ID 1009, possible duplicate of the 15mm f/1.7.
The Panasonic Leica DG Summilux 15mm f/1.7 ASPH. is a fast wide prime for Micro Four Thirds from Panasonic's Leica DG lens line, released approximately 2014. 15mm on MFT gives approximately 30mm equivalent — a moderately wide field of view. Leica DG lenses are designed by Panasonic to Leica optical standards. Micro Four Thirds mount.
f/1.7 maximum aperture. 15mm focal length (approximately 30mm equivalent on MFT 2× crop). ASPH. (aspherical) elements. 7-blade aperture. At approximately 115g. 46mm filter thread. Micro Four Thirds mount.
Leica DG lenses are designed and manufactured by Panasonic under a Leica optical licensing agreement. Summilux denotes Leica's f/1.4–f/1.7 prime lens class. At 115g and 46mm filter thread the 15mm f/1.7 is an unusually compact fast wide for MFT — equivalent to a 30mm f/1.7 in full-frame terms. Compatible with all MFT bodies including Olympus and OM System.
On the used market the Panasonic Leica DG Summilux 15mm f/1.7 ASPH. is a compact fast wide prime for Micro Four Thirds cameras. Condition checks: 46mm front element (small diameter — inspect closely for marks), AF response, aperture blade condition. MFT mount — compatible with all MFT bodies.