Camera Lens Collection

Brand	Coatings	Product line	Model	Aperture (ƒ)	Focal range (mm)	Optical Design (Elements / Groups)	Mount	Image Size	Filter size(s)	Serial #	Purchase Price	Notes
Asahi Optical Co.	SMC	Pentax-M	1:2.8 40mm (Pancake)	ƒ2.8 – 22	40	5 / 4	K	35mm	Front: 49	7310541	$46.37	Bought with a K1000 camera, and Sigma 28mm lens.
Asahi Optical Co.	SMC	Pentax-M	1:1.4 50mm	ƒ1.4 – 22	50	7 / 6	K	35mm	Front: 49	2464542	$38.92	Came with Pentax MX camera
Asahi Optical Co.	SMC	Pentax-M	1:1.7 50mm	ƒ1.7 – 22	50	6 / 5	K	35mm	Front: 49	7289803	$42.40	Part of a bundle with cameras and flashes.
Asahi Optical Co.	SMC	Pentax-M	1:2 50mm	ƒ2 – 22	50	5 / 5	K	35mm	Front: 49	7948274	$27.50	Part of a ten lens lot
Count: 4										Total Cost:	$155.19