17mm Mamiya 645 Fisheye inc. Speed Booster

Built in speed booster to provide a higher speed lens
Common focus and iris gear positions relative to mount flange
New circular iris design
134mm common front ring diameter
LPL mount; back focus adjustable with standard shims
Price: POA (Price On Application)

Cam driven focus system and chassis style lens housing allow matte boxes and other accessories to be attached to the front of the lens, without affecting focus movements. The benefit of zero backlash and image shift give accurate dual focus scales that repeat on direction and change with the cam drive system, giving a wide spread of markings through the scale.

Aluminium alloy, stainless steel, brass and robust construction guarantees a long serviceable life.

The 17mm Mamiya Fisheye is using the base lens of a 24mm Mamiya 645 Fisheye. We introduce a 0.7x speed booster behind the base lens. This turns the 24mm into a 17mm lens and has the bonus of increasing the amount of light hitting the sensor. Therefore, wide open the lens (typically) reaches T3.3. As the original base lens was designed to cover the stills 645 film format, once the speed booster is on, the lens will still cover all full frame sensors.

17mm Mamiya 645 Fisheye inc. Speed Booster Specification

	17mm			19mm			25mm			32mm			39mm			50mm			57mm			57mm			78mm			107mm			107mm
Mount	LPL			LPL			LPL			LPL			LPL			LPL			LPL			LPL			LPL			LPL			LPL
T-Stop	3.3			3			2.8			2.3			2.3			2.3			2.3			1.6			2.3			2.2			2.6
Min. Object Distance typ.	11"			11"			12"			14"			16"			21"			2'1			2'1			3'7			3'9			3'9
Ø Image Circle	T3.3	T8	T22	T3	T8	T22	T2.8	T8	T22	T2.3	T8	T22	T2.3	T8	T22	T2.3	T8	T22	T2.3	T8	T22	T1.6	T8	T22	T2.3	T8	T22	T2.2	T8	T22	T2.6	T8	T22
Close focus (mm)	47	47	47	56	56	56	57	57	56	55	55	53	56	54	51	51	51	48				54	47	47	53	49	47	53	48	46	53	50	47
Infinity (mm)	44.71	44.71	44.71	50	50	48	53	53	51	54	55	54	58	58	58	54	54	43				53	51	51	56	54	51	55	55	48	56	56	54
Front Diameter (mm)	134			143			95			95			95			95			95			95			95			95			95
*Total Length (mm)**	104			138			94			109(C) 104(CN)			94(S/N) 109(C)			94			94			94			94			151			119
*Total Length (inches)**	4.1			5.4			3.7			4.3 (C) 4.1 (CN)			3.7 (S/N) 4.3 (C)			3.7			3.7			3.7			3.7			5.9			4.7

* Total approximate length is measured from the flange to the front of lens

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17mm Mamiya 645 Fisheye inc. Speed Booster Specification

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17mm Mamiya 645 Fisheye inc. Speed Booster

17mm Mamiya 645 Fisheye inc. Speed Booster Specification

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