Cooke S4/i Prime Lenses

Focal Lengths: 12, 14, 16, 18, 21, 25, 27, 32, 35, 40,
50, 65, 75, 100, 135, 150, 180, 300mm,
and a soft focus attachment for the 65/75mm Lens

All Cooke S4 Prime lenses are supplied with /i capability.

Cooke S4/i Prime Lenses - currently 18 focal lengths

Designed and developed in close technical collaboration with Clairmont Camera and Otto Nemenz in Hollywood, the Cooke Series 4 Prime Lenses represent a major advance in fixed focal length lenses for 35mm format professional cinematography.

Recognition of Excellence
1998 Cinec Award
1999 Academy of Motion Picture Arts and Sciences Award
for Optical and Mechanical Design Excellence

2000 Primetime Emmy Award, Academy of Television Arts and Sciences
For outstanding achievement in Engineering Development

2001 Queen’s Award for Technical Achievement
2001 Queen’s Award for Export

Features

Optical Performance	Superb control of flare, distortion, veiling glare, and spherical aberrations at full aperture.
Focus Mechanism	The S4 design foregoes the usual helical thread method of focus adjustment in favour of Cooke's Academy Award®-winning cam mechanism. The smooth cam movement liberates the lens from a simple thread rotation giving the operator an appropriate rate of focus at all distances. The cam design also allows for better spaced and more detailed and visible index marks.
No Breathing	No image shift when racking focus from close focus to infinity.
Color Balance	All focal lengths are color balanced, achieving excellent contrast and resolution over the full Super 35 format.
True T2.0 Aperture	Cooke Series 4 lenses are optimized at maximum aperture, measured at a true T2.0. The Cooke S4 300mm lens is measured at a true T2.8.
Operation	Focus and iris drive gears have the same diameter and position across all focal lengths reducing adjustment time when changing lenses: 140 teeth 0.8 Metric Module x 6.0mm Wide (98mm from image plane)
Iris Scales	Two opposing linear T-Scales, whole and third stops marked
Iris Angular Rotation	Total Rotation 91 degrees
Iris Drive Gear	114 Teeth 0.8 Metric Module x 6.0mm Wide, (84mm from image plane)
Mount and scales	Each of the Series 4 Primes are supplied with PL mount and are available with either footage or metric focus scales.
Finish	Hard-wearing, scratch-resistant, PTFE anodised finish for working in the harshest environments.
Internal Front Fitting Filter	Internal Thread for Filter Adapter M105 x 0.75 pitch

Cooke S4/i Specifications

Notes to Specification Table:
65mm SF = Soft focus attachment for 65mm focal length and 75mm focal length via a Cooke 75mm adapter ring. The design for the attachment is based on Cooke's PS945 soft focus lens for 4x5 large format photography. See the effect in sample photos taken with the PS945 lens. The effect is high resolution with a stunning glow to the highlights -- subtle, but most pronounced wide open at T2, becoming less pronounced as you stop down. (Effect from T2 to T4 with the 65mm lens; T2 to T5.6 with the 75mm lens.)

135mm LDS lens:
Minimum Marked Object Distance = 33 inches/900mm
Close Focus from Lens Front = 23.7 inches/664mm
Angular Rotation to MOD Endstop = 320 degrees

Specifications	Units	12mm S4/i	14mm S4/i	16mm S4/i	18mm S4/i	21mm S4/i	25mm S4/i	27mm S4/i	32mm S4/i	35mm S4/i	40mm S4/i	50mm S4/i	65mm S4/i	65mmSF	75mm S4/i	100mm S4/i	135mm S4/i	150mm S4/i	180mm S4/i	300 S4/i
T Stop Range		T2-T22	T2-T22	T2-T22	T2-T22	T2-T22	T2-T22	T2-T22	T2-T22	T2-T22	T2-T22	T2-T22	T2-T22	T2-T22	T2-T2 2	T2-T22	T2-T22	T2-T22	T2-T22	T2.8-T22
Angular Rotation of Iris Scale	deg.	96	96	96	96	96	96	96	96	95	94	93	92	92	92	91	92	92	94	78
Minimum Marked Object Distance	ins mm	9 225	9 225	9 225	9 250	9 250	9 250	10 250	12 2325	14 350	16 450	20 550	27 700	27 700	30 800	36 950	30 800	42 1050	51 1300	84 2100
Close Focus from Lens Front	ins mm	2.0 47	2.0 45	2.0 47	2.5 85	2.5 85	2.5 85	3.5 85	4.9 145	6.9 170	8.4 257	13 373	20 523	19.2 503	23 623	28.4 757	20.7 564	33.8 841	41.7 1063	74 1846
Angular Rotation to MOD End Stop	deg	270	270	270	270	270	270	270	300	300	300	300	300	300	300	300	340	300	300	300
Maximum Diagonal Angle of View for Super 35mm Format	deg	103	94	86	80	71	62	58	50	46	41	34	26	26	22	17	13	11.5	9.5	5.7
Length of Lens (Lens Mount to Front)	ins mm	5 126	5 128	5 126	4.5 113	4.5 113	4.5 113	4.5 113	5.0 128	5.0 128	5.5 141	4.9 125	4.9 125	5.7 145	4.9 125	5.5 141	7.3 184	6.2 157	7.3 185	7.9 202
Front Diameter	mm	156	110	110	110	110	110	110	110	110	110	110	110	110	110	110	110	125	136	136
Total Weight	lbs kg	6.5 3	4.8 2.2	5.40 2.45	3.85 1.75	4.4 2.0	3.5 1.6	3.55 1.60	4.0 1.85	4.20 1.90	4.4 2.0	3.3 1.5	3.55 1.60	4.60 2.10	3.85 1.75	4.4 2.0	4.95 2.25	7.7 3.5	9.45 4.3	10.35 4.7
Maximum Format Cover	30mm diameter (Super 35mm format)
Focus Scales	Two opposing focus scales - metric or footage. Scales marked from infinity to MOD
Focus Drive Fear	140 teeth 0.8 metric module x 6.0mm wide x 98mm from image plane 140 teeth 0.8 module x 6.0mm wide x 99mm from image plane (300mm)
Iris Scales	Two opposing linear T-scales whole and third stops marked
Iris Drive Gear	114 teeth 0.8 metric module x 4.0 wide 84mm from image plane 134 teeth 0.8 metric module x 2.5mm wide x 80.5mm from image plane (300mm)
Iris Drive Gear for LDS Lens	136 teeth, 0.8 metric module x 6.0mm x 79.5mm from image plane
Internal Front Fitting Filter	Internal thread for filter adapter M105 x .075 pitch (12mm and 14mm not applicable) M120 x 1.0 pitch (150mm) M131 x 1.0 pitch (180mm, 300mm)

Access Cooke Depth of Field Tables

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Cooke Lens Comprehensive Price List	Pricing for Cooke Primes, Zooms and Accessories
Cooke S4/i Telephoto Lenses	Thermally compensated and very close focus.