Fujica ST801

35mm MF film SLR camera



Production details
System: Fujica M42 (1970)
Imaging plane
Maximum format:35mm full frame
Mount and Flange focal distance:M42 [45.5mm]
Imaging plane:36 × 24mm film
Speeds:1 - 1/2000 + B
Exposure metering:Through-the-lens (TTL), open-aperture
Exposure modes:Manual
Physical characteristics

Manufacturer description #1

LED (Light Emitting Diodes) Needle-less Metering System, Through-The-Lens Full Aperture Averaging Silver Battery Meter with Silicon Photocells.

The light is measured by Silicon photocells, which react to light tens of times faster and more accurate than conventional CdS photocells.

Exposure is indicated by seven light-emitting diodes in the viewfinder instead of the usual meter needle. The diode light can be moved several steps above normal exposure or below when special exposure effects are desired. Since the light energy reflected from the subject is converted directly into electrical energy in the form of diode light and no mechanical mechanism is used, the exposure indication is quick and meter deviation caused by shocj or mechanical failure is eliminated.

FUJINON EBC (ELectron Beam Coating) Lens

The key elements of each of the ST801's interchangeable lenses are coated with 11 layers to assure complete protection against flare and ghost images as well as producing the ultimate in color definition and picture sharpness.

The FUJICA ST801 Complete Photographic System

A wide selection of interchangeable lenses ranging all the way from 28mm wideangle to 1000mm ultratelephoto plus two zoom lenses and a complete set of carefully engineered accessories bring every picture-taking situation within easy reach of everyone.


Type: 35mm, single-lens reflex camera.

Picture Size: 24x36mm

Standard Lens: EBC Fujinon 1:1.8 55mm; 4 components, 6 elements; EBC Fujinon 1:1.4 50mm; 6 components, 7 elements

Lens Mounting: Screw in type (Praktica mount). Mounting location locking device.

Shutter: Focal-plane; B-1-1/2000 sec.; FP and X contacts; built-in self-timer; Hot Shoe; safety lock equipped switch-on switch-off shutter release button.

Viewfinder: Pentaprism with Fresnel lens; 0.96x magnification with F1.8 55mm lens; 2-way focusing with microprism and split-image, exposure control light emitting diodes (7) and shutter speed visible in viewfinder.

Mirror: Quick return type.

Exposure Meter: TTL silicon photocell and light emitting diode metering system, averaging light measurement through full aperture and stopped-down aperture, aperture and shutter speed interlocked with exposure meter, switch-on switch-off with shutter release button, built-in large scale integrated circuit

Meter Range: EV1 to 19; operates with ASA film speeds 25 to 3,200 (1/3rd step).

Power Source: One 6V silver battery (Mallory PX28, Eveready 544).

Film Advance: Single-stroke lever action; 193 deg. winding angle, winding latitude provided by lever top, returnable lever (from any winding position), self-cocking shutter, easy loading, provision for double-exposure prevention, automatic reset frame counter.

Film Rewind: Crank.

Manufacturer description #2

Instead of the conventional CdS meter, the ST-801 continues Fuji's pioneering use of the revolutionary SILICON photocell. It allows the ST-801 to respond to light variations 10 times faster.

Instead of an electro-mechanical system, the ST-801 has SOLlD·STATE READOUT with seven light-emitting diodes (LED's), you'll see the very instant you look through the viewfinder.

Try the "DARK CORNER TEST" right now: Focus on any dark area in the store, see the bright red LED's lighting up inside the viewfinder as they respond to light variations - or the changes YOU make in f/stop or shutterspeed. Note the surprising CLARITY and BRILLlANCE of the image in the viewfinder... then judge for yourself.

Each one of these diodes, which can be seen as clearly in the dark as in the brightest sunlight, represents the difference of one f/stop from the next consecutive diode, the center diode indicating the correct exposure. If two adjacent diodes are visible at the same time, this indicates an intermediate exposure. This SOLlD-STATE readout allows you to freely and accurately CONTROL the over- or under-exposure of your picture. In addition, the fragile meter-movement, as well as the needle, are replaced by LED's and all solid-state electronics: no moving parts! Extra protection is therefore provided against meter deviations due to concussion, dust or mechanical failure.


No matter at what f/stop the aperture is set, it remains fully open for light-measurement, up to the moment the shutter is released.


The ST-801's photocells respond to a broader range of the light spectrum faster and more accurately than a conventional CdS cell.


The FET amplifies the light energy from the 2 silicon photocells and transmits it to the computer logic.


The LSI (Large Scale Integrated Circuit) of the computer's logic correlates light-intensity reflected by subject-matter with filmspeed, f/stop and shutterspeed, giving precise LED readout.


LED's, at a glance, show computed exposure, with full option of manual override by the photographer for any desired special effects.


Now the full range of interchangeable lenses, 28mm through 1000mm, has Fuji's multi-layer ELECTRON-BEAM-COATING which cuts flare, improves transmission and color-balance, eliminating ghost images. All feature the exclusive fixed-point, screw-in lockmount for precise seating and alignment. There are nine lenses with this technological breakthrough: 28mm f/3.5; 35mm f/2.8; 50mm f/1.4; 55mm f/1.8; 100mm f/2.8; 135mm f/3.5; 200mm f/4.5; 1000mm f/8 and 75-150mm f/4.5 Zoom. A 54-270mm f/4.5 Zoom to be announced.

Silver coated prism and aluminum mirror

By coating the surfaces of the prism with silver and using an aluminum mirror, 94% of the light passing through the lenses is reflected into the viewfinder.

The result is an unusually bright image. Focusing and checking depth-of-field are simplified even in available tight situations. A more accurate reading of the light by the photo electric cell is also assured.

Master-Control Viewfinder Shows Everything

Since the overall image is 50% brighter, COMPOSITION and FOCUSING are very fast and easy. The microprism in the center practically glows. LED readout of the solid-state electronic meter can be seen as clearly in the dark as in the brightest sunlight! Shutter-speed chosen is visible in the viewfinder, and, by depressing the Aperture-Selector Button, even DEPTH OF FIELD can visually be observed.

Precision 1/2000-sec. Shutter

New hi-efficiency focal-plane shutter with FP and X synchronization, selftimer and speeds from 1-1/2,000 sec. plus B. Never needs oiling, due to a new silicon-sintered alloy (oil-less metal) used in all moving parts. This also assures that accuracy of exposure is maintained throughout a broad temperature range from -4° to 122 deg. F.

From the editor

The weight and dimensions are indicated for the camera body with the Fuji EBC Fujinon 55mm F/1.8 lens mounted.

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35mm full frame

43.27 24 36
  • Dimensions: 36 × 24mm
  • Aspect ratio: 3:2
  • Diagonal: 43.27mm
  • Area: 864mm2

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Image stabilizer

A technology used for reducing or even eliminating the effects of camera shake. Gyro sensors inside the lens detect camera shake and pass the data to a microcomputer. Then an image stabilization group of elements controlled by the microcomputer moves inside the lens and compensates camera shake in order to keep the image static on the imaging sensor or film.

The technology allows to increase the shutter speed by several stops and shoot handheld in such lighting conditions and at such focal lengths where without image stabilizer you have to use tripod, decrease the shutter speed and/or increase the ISO setting which can lead to blurry and noisy images.

Original name

Lens name as indicated on the lens barrel (usually on the front ring). With lenses from film era, may vary slightly from batch to batch.


Format refers to the shape and size of film or image sensor.

35mm is the common name of the 36x24mm film format or image sensor format. It has an aspect ratio of 3:2, and a diagonal measurement of approximately 43mm. The name originates with the total width of the 135 film which was the primary medium of the format prior to the invention of the full frame digital SLR. Historically the 35mm format was sometimes called small format to distinguish it from the medium and large formats.

APS-C is an image sensor format approximately equivalent in size to the film negatives of 25.1x16.7mm with an aspect ratio of 3:2.

Medium format is a film format or image sensor format larger than 36x24mm (35mm) but smaller than 4x5in (large format).

Angle of view

Angle of view describes the angular extent of a given scene that is imaged by a camera. It is used interchangeably with the more general term field of view.

As the focal length changes, the angle of view also changes. The shorter the focal length (eg 18mm), the wider the angle of view. Conversely, the longer the focal length (eg 55mm), the smaller the angle of view.

A camera's angle of view depends not only on the lens, but also on the sensor. Imaging sensors are sometimes smaller than 35mm film frame, and this causes the lens to have a narrower angle of view than with 35mm film, by a certain factor for each sensor (called the crop factor).

This website does not use the angles of view provided by lens manufacturers, but calculates them automatically by the following formula: 114.6 * arctan (21.622 / CF * FL),


CF – crop-factor of a sensor,
FL – focal length of a lens.


A lens mount is an interface — mechanical and often also electrical — between a camera body and a lens.

A lens mount may be a screw-threaded type, a bayonet-type, or a breech-lock type. Modern camera lens mounts are of the bayonet type, because the bayonet mechanism precisely aligns mechanical and electrical features between lens and body, unlike screw-threaded mounts.

Lens mounts of competing manufacturers (Canon, Nikon, Pentax, Sony etc.) are always incompatible. In addition to the mechanical and electrical interface variations, the flange focal distance can also be different.

The flange focal distance (FFD) is the distance from the mechanical rear end surface of the lens mount to the focal plane.

Lens construction

Lens construction – a specific arrangement of elements and groups that make up the optical design, including type and size of elements, type of used materials etc.

Element - an individual piece of glass which makes up one component of a photographic lens. Photographic lenses are nearly always built up of multiple such elements.

Group – a cemented together pieces of glass which form a single unit or an individual piece of glass. The advantage is that there is no glass-air surfaces between cemented together pieces of glass, which reduces reflections.

Focal length

The focal length is the factor that determines the size of the image reproduced on the focal plane, picture angle which covers the area of the subject to be photographed, depth of field, etc.


The largest opening or stop at which a lens can be used is referred to as the speed of the lens. The larger the maximum aperture is, the faster the lens is considered to be. Lenses that offer a large maximum aperture are commonly referred to as fast lenses, and lenses with smaller maximum aperture are regarded as slow.

In low-light situations, having a wider maximum aperture means that you can shoot at a faster shutter speed or work at a lower ISO, or both.

Closest focusing distance

The minimum distance from the focal plane (film or sensor) to the subject where the lens is still able to focus.

Closest working distance

The distance from the front edge of the lens to the subject at the maximum magnification.

Magnification ratio

Determines how large the subject will appear in the final image. For example, a magnification ratio of 1:1 means that the image of the subject formed on the film or sensor will be the same size as the subject in real life. For this reason, a 1:1 ratio is often called "life-size".

Manual focus override in autofocus mode

Allows to perform final focusing manually after the camera has locked the focus automatically. Note that you don't have to switch camera and/or lens to manual focus mode.

Manual focus override in autofocus mode

Allows to perform final focusing manually after the camera has locked the focus automatically. Note that you don't have to switch camera and/or lens to manual focus mode.

Electronic manual focus override is performed in the following way: half-press the shutter button, wait until the camera has finished the autofocusing and then focus manually without releasing the shutter button using the focusing ring.

Manual diaphragm

The diaphragm must be stopped down manually by rotating the detent aperture ring.

Preset diaphragm

The lens has two rings, one is for pre-setting, while the other is for normal diaphragm adjustment. The first ring must be set at the desired aperture, the second ring then should be fully opened for focusing, and turned back for stop down to the pre-set value.

Semi-automatic diaphragm

The lens features spring mechanism in the diaphragm, triggered by the shutter release, which stops down the diaphragm to the pre-set value. The spring needs to be reset manually after each exposure to re-open diaphragm to its maximum value.

Automatic diaphragm

The camera automatically closes the diaphragm down during the shutter operation. On completion of the exposure, the diaphragm re-opens to its maximum value.

Fixed diaphragm

The aperture setting is fixed at F/ on this lens, and cannot be adjusted.

Number of blades

As a general rule, the more blades that are used to create the aperture opening in the lens, the rounder the out-of-focus highlights will be.

Some lenses are designed with curved diaphragm blades, so the roundness of the aperture comes not from the number of blades, but from their shape. However, the fewer blades the diaphragm has, the more difficult it is to form a circle, regardless of rounded edges.

At maximum aperture, the opening will be circular regardless of the number of blades.


Excluding case or pouch, caps and other detachable accessories (lens hood, close-up adapter, tripod adapter etc.).

Maximum diameter x Length

Excluding case or pouch, caps and other detachable accessories (lens hood, close-up adapter, tripod adapter etc.).

For lenses with collapsible design, the length is indicated for the working (retracted) state.

Weather sealing

A rubber material which is inserted in between each externally exposed part (manual focus and zoom rings, buttons, switch panels etc.) to ensure it is properly sealed against dust and moisture.

Lenses that accept front mounted filters typically do not have gaskets behind the filter mount. It is recommended to use a filter for complete weather resistance when desired.

Fluorine coating

Helps keep lenses clean by reducing the possibility of dust and dirt adhering to the lens and by facilitating cleaning should the need arise. Applied to the outer surface of the front and/or rear lens elements over multi-coatings.


Lens filters are accessories that can protect lenses from dirt and damage, enhance colors, minimize glare and reflections, and add creative effects to images.

Lens hood

A lens hood or lens shade is a device used on the end of a lens to block the sun or other light source in order to prevent glare and lens flare. Flare occurs when stray light strikes the front element of a lens and then bounces around within the lens. This stray light often comes from very bright light sources, such as the sun, bright studio lights, or a bright white background.

The geometry of the lens hood can vary from a plain cylindrical or conical section to a more complex shape, sometimes called a petal, tulip, or flower hood. This allows the lens hood to block stray light with the higher portions of the lens hood, while allowing more light into the corners of the image through the lowered portions of the hood.

Lens hoods are more prominent in long focus lenses because they have a smaller viewing angle than that of wide-angle lenses. For wide angle lenses, the length of the hood cannot be as long as those for telephoto lenses, as a longer hood would enter the wider field of view of the lens.

Lens hoods are often designed to fit onto the matching lens facing either forward, for normal use, or backwards, so that the hood may be stored with the lens without occupying much additional space. In addition, lens hoods can offer some degree of physical protection for the lens due to the hood extending farther than the lens itself.


Teleconverters increase the effective focal length of lenses. They also usually maintain the closest focusing distance of lenses, thus increasing the magnification significantly. A lens combined with a teleconverter is normally smaller, lighter and cheaper than a "direct" telephoto lens of the same focal length and speed.

Teleconverters are a convenient way of enhancing telephoto capability, but it comes at a cost − reduced maximum aperture. Also, since teleconverters magnify every detail in the image, they logically also magnify residual aberrations of the lens.

Lens caps

Scratched lens surfaces can spoil the definition and contrast of even the finest lenses. Lens covers are the best and most inexpensive protection available against dust, moisture and abrasion. Safeguard lens elements - both front and rear - whenever the lens is not in use.