Eclair ACL (1971)

Name: Eclair ACL
Brand: Eclair

It hums like a library whisper - 28dB of mechanical precision in a body light enough to forget you're carrying it.

Overview

The Eclair ACL is a 16mm professional film camera in a magnesium alloy shell. It landed in 1971 and was featherlight, quiet, and built for real-world shooting without the bulk of a blimp. It was designed to keep weight and dimensions down and noise to a near-silent 28dB, and it became a documentary favorite, especially for crews working in tight spaces, war zones, or back-alley jazz clubs where silence mattered as much as focus. It weighs just 3.3 lbs. (1.5kg) bare, so you can shoulder it for hours, and its image steadiness and sharpness held up against far heavier competition.

It wasn't flashy. This was a tool for working cinematographers who needed reliability, speed, and discretion. The design is simple: a reflex viewing system that shows exactly what the lens sees, crystal-controlled speeds from 8 to 75fps, and a snap-on magazine system. No more threading in the dark. No more fumbling with spools. Click, shoot, swap - 400 feet of film in under ten seconds. That made a big difference for run-and-gun filmmaking. It also takes C-mount, Eclair CA, Arriflex, and Nikon lenses, so it didn't lock you into one optical ecosystem. Pair it with the Angenieux 12-120mm T2 zoom or a vintage Cooke, and the ACL stays out of the way.

Don't mistake the small size for fragility. This was professional gear. The CA-1 mount is a heavy-duty bayonet, not an adapter, and it holds the lens rock solid. Inside, a focal plane shutter and side-to-side oscillating mirror keep the body compact without costing performance. The Kinoptik HC Auto-Erect viewfinder rotates 360°, works for left- or right-eye use, and opens its iris automatically under head pressure. There is also a TTL exposure guide with seven LEDs showing ±1.5 stops in half-stop increments. That was advanced for its time, and useful on set.

Specifications

Manufacturer	Eclair
Production year	Introduced in 1971
Camera Body Dimensions & Weight	6 ⅜" x 3 ⅜" x 3 ⅜" (162mm x 86mm x 92mm), 3.3 lbs. (1.5kg)
Film	16mm — double perf or single perf (A winding or B winding) on 2" core or daylight spool.
Film format	16mm
Reflex Viewing	oscillating mirror traveling at half camera speed, reflected onto ground glass with 16mm full aperture and TV safe action area markings.
Shutter	175° rotating focal plane shutter with fixed opening; shutter speed 1/150 second @ 24fps.
Noise Level	28dB
Motor Type	brushless, Hall effect, crystal controlled, variable speed
Power Consumption	less than 1.1A at 12V (68°F or 20°C) at 24 fps
Filming Speeds	8, 12, 24, 25, 50 and 75fps (all crystal controlled).
Magazines Type	200' or 400' (60m or 120m) single sprocket belt drive; coaxial; snap-on; instant change
Magazine capacities	60m magazine, 120m magazine
Kinoptik HC Auto-Erect Image Viewfinder	both viewfinder and eyepiece rotate 360°, left or right eye viewing, pressure of the head opens the eyepiece iris, ±6 diopter adjustments.
LED 7 Exposure Guide Sensitivity Range	ISO 4 to 400
LED 7 Exposure Guide Type of Measurement	behind the lens (TTL); semi-spot (e.g. 4mm diameter — 10° acceptance with 25mm lens).
CA-1 Camera Mount flange focal distance	48mm
"C" Mount flange focal distance	17.52mm
Operating Temperature Range	-13°F to 140°F (-25°C to 60°C), special winterizing available
Power input	4-pin male XLR
Motor voltage specification	12V

Key Features

The Snap-On Magazine System That Changed Everything

The ACL's coaxial, pre-threaded loop magazine was the big change. Before the ACL, changing magazines meant threading film in a dark bag or under a blinder, which was slow and error-prone. The ACL's snap-on design lets you swap a 400' magazine in seconds, pre-loaded and ready to roll. Documentary crews who couldn't afford to miss a moment liked that. Owners report a caveat, though: magazines might fall off or leak light if not properly seated. The advice is to double-check the lock, cover the edges with gaffer tape when loaded, and stick to French-made magazines, especially for high-speed work up to 75fps. The English-made I or 1 model magazines are not recommended for precise work.

Reflex Viewing Without the Bulk

The ACL used a side-to-side oscillating mirror that traveled at half camera speed, reflecting the image onto a ground glass with full 16mm aperture and TV-safe markings. This gave cinematographers real-time framing and focus confirmation without a separate viewfinder prism or external monitor. The Kinoptik HC viewfinder added 360° rotation, automatic iris activation via head pressure, and ±6 diopter adjustment, so it adapts to any shooting position, whether crouched in a trench or perched on a ladder.

Crystal-Controlled Precision, Not Guesswork

Filming speeds are 8, 12, 24, 25, 50, and 75fps, all crystal controlled. That gave solid sync for sound recording and slow-motion work. The brushless, Hall effect motor runs smooth and consistent, and the out-of-sync warning light detects drift down to ±8ppm. There is a warning, though: the motor theoretically needs at least 11VDC, and over-voltage can fry it. Owners stress using a stable 12V supply and avoiding cheap battery packs. For high-speed shooting, a battery with at least 4Ah capacity is highly recommended.

Lens Flexibility That Meant Freedom

The ACL wasn't locked into one mount. It natively supported the heavy-duty CA-1 bayonet (48mm flange distance) and also accepted C-mount lenses (17.52mm) directly. With intermediate TS mounts, it could handle Arriflex and Nikon glass. Indie shooters who already owned lenses liked that. The CA-1 was the sturdy choice, while the C-mount option opened up affordable vintage optics. Mounting a C lens requires attention to back focal distance, which the manual walks through carefully.

Historical Context

The Eclair ACL was officially introduced in October 1970 at Photokina 70, though Wikipedia cites 1971 as the introduction year, likely reflecting broader market availability. Filmmaker Jean Rouch received a pre-production prototype in 1969-70 and tested it in real documentary conditions before it hit the market. It inherited key advantages from the successful Eclair 16 but went further in portability and silence. Production halted briefly in 1972 before resuming under the SOREMEC parent company. By 1974, the improved Type 1974, often called the 1.5 ACL, arrived with a 120m magazine, optional light meter, and heavy-duty motor. The ACL II, introduced between 1979 and 1985, brought new Kinoptik viewfinders and a Lemo connector for external sync. A rare Single System MOS sound version was produced from 1976 to 1978 with a larger base for sound electronics. Production ended in July 1985 after Soremec/Eclair's bankruptcy. In April 1986, Aaton acquired the remaining stock, parts, and patents.

Collectibility & Value

The Eclair ACL remains a real best buy for budget-conscious filmmakers and collectors who value lightweight, low-noise performance. Higher-priced examples may include video tap, Super16 or Ultra-16 conversion, or rare accessories like the Eclair Botex synch box, which is now extremely rare. A pre-owned "Movie Camera Eclair ACL 16mm w/Angenieux Zoom 12-120mm Set" has been listed for $2,750, while a Nikon-ACL adapter conversion service is priced at £220. Common issues include magazines that may fall off or leak light, so owners recommend taping the edges and verifying the lock. Power supply stability is critical. Over-voltage can destroy the motor, so a regulated 12V source is essential. The ACL-1, ACL-1.5, and ACL-2 packages were still available through specialty dealers as recently as 2020, but working condition and full accessories drive value. A Super16-converted ACL II in good working order will be a tough find on a budget.

Market Value

┌──────────────────────────────────────────────────────────────────────────┐
│ ECLAIR ACL                                                      Nov 2026 │
├──────────────────────────────────────────────────────────────────────────┤
│ High      $2,264                                  Latest          $2,264 │
│ Median    $299                                    Trend                — │
│ Low       $31                                     Volume           ~1/mo │
├──────────────────────────────────────────────────────────────────────────┤
│ $3,000 ┤                                                                 │
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│        │                                                                .│
│ $1,714 ┤                                                                 │
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│     $0 ┤.     .                                       .   ..             │
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│    vol │█     ▄                                       ▄   ▄▄            ▄│
│        └─────────────────────────────────────────────────────────────────│
│         2026-02                      2026-05                      2026-07│
└──────────────────────────────────────────────────────────────────────────┘

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