Name Manufacturer / Model	Mount Bayonet	Type Category	Year Released	Focal mm	Aperture f/	Weight g
YashicaMLB 100mm F/4	CONTAX/YASHICA	Telephoto	—	100mm	f/4	190g
YashicaReflex 1000mm F/11	CONTAX/YASHICA	Mirror	1974	1000mm	f/11	2330g
YashicaReflex 500mm F/8	CONTAX/YASHICA	Mirror	1974	500mm	f/8	865g
YashicaReflex Yashinon 1000mm F/11	M42	Mirror	1973	1000mm	f/11	2300g
YashicaReflex Yashinon 500mm F/8	M42	Mirror	1973	500mm	f/8	740g
YashicaReflex Yashinon-DX 500mm F/5	M42	Mirror	—	500mm	f/5	2100g
YashicaReflex Yashinon-DX 500mm F/8	M42	Mirror	—	500mm	f/8	865g
YashicaSuper Yashinon 600mm F/8	M42	Telephoto	—	600mm	f/8	1900g
YashicaSuper Yashinon 800mm F/8	M42	Telephoto	—	800mm	f/8	3000g
YashicaSuper Yashinon-DX 135mm F/2.8	M42	Telephoto	—	135mm	f/2.8	417g
YashicaSuper Yashinon-DX 35mm F/2.8	M42	Wide	—	35mm	f/2.8	178g
YashicaSuper Yashinon-R 135mm F/2.8	M42	Telephoto	1961	135mm	f/2.8	550g
YashicaSuper Yashinon-R 200mm F/4.5	M42	Telephoto	1961	200mm	f/4.5	550g
YashicaSuper Yashinon-R 300mm F/5.5	M42	Telephoto	1961	300mm	f/5.5	700g
YashicaSuper Yashinon-R 35mm F/2.8	M42	Wide	1961	35mm	f/2.8	260g
YashicaSuper Yashinon-R 400mm F/6.3	M42	Telephoto	1961	400mm	f/6.3	950g
YashicaSuper Yashinon-R 600mm F/8	M42	Telephoto	—	600mm	f/8	1900g
YashicaSuper Yashinon-R 800mm F/8	M42	Telephoto	—	800mm	f/8	3000g
YashicaYashinon-DS 21mm F/3.3	M42	Wide	—	21mm	f/3.3	—
YashicaYashinon-DX 21mm F/3.3	M42	Wide	1967	21mm	f/3.3	130g
YashicaYashinon-R 75-230mm F/4.5	M42	Zoom	—	75-230mm	f/4.5	—
YashicaYashinon-R 90-190mm F/5.8	M42	Telephoto	—	90-190mm	f/5.8	550g
YasuharaMadoka 7.3mm F/4 Fisheye	FUJIFILM X	Fisheye	2012	7mm	f/4	200g
YasuharaMoMo100 28mm F/6.4 Soft Focus	FUJIFILM X	Wide	2016	28mm	f/6.4	139g
YasuharaMoMo100 43mm F/6.4 Soft Focus	CANON EF	Prime	2016	43mm	f/6.4	145g
Yongnuo23mm F/1.4 DA DSM WL	FUJIFILM X	Wide	2024	23mm	f/1.4	360g
Yongnuo35mm F/1.8 DA DSM WL	CANON RF	Wide	2024	35mm	f/1.8	183g
Yongnuo35mm F/2 DF DSM	CANON RF	Wide	2020	35mm	f/2	280g