Photography on the Class Microscope

Chris Downs

The Camera

The camera takes 35 mm film, available from stores or from a class technician. Refer to the figure below for notation.

To load the film:

  1. Open the back of the camera by pulling back release lever [E]

  2. Pull out rewind knob [F]

  3. Insert film into camera and push the rewind knob back in

  4. Draw film leader across to the take-up spindle and push end into slot in spindle

  5. Wind on the film a couple of times using the advance roller [D] and advance button [C] to make sure the film has taken on the spindle
    (the advance roller will move the film on one exposure, use the advance button to release lock and wind on further)

  6. Close camera back

  7. Wind on film a couple more exposures to reveal unexposed film inside the camera

To remove a film

  1. Pull out small lever from the rewind knob

  2. Press the small button on the back of the camera

  3. Turn the lever on the rewind knob clockwise until no resistance is felt

  4. Open the back of the camera

  5. Pull out rewind knob

  6. Remove film from camera

  7. Close camera back

The Exposure Meter

  1. Turn on by turning meter knob [B] to the HIGH position

  2. Set ASA speed knob [C] to the film speed (or closest value)

  3. Read value from meter

The Light Path Selectors

These are a set of plungers which use prisms to direct light from the source. There are two on the microscope, one by the exposure sensor [J] and one by the eyepieces [M]. Each has three settings which control the path of light.

Exposure Selector [J]

V View Sends light to the sighting eyepiece

CV Camera/View Sends light to the sighting eyepiece and the camera

E Exposure Sends light to the exposure meter

Eyepiece Selector [M]

V View Sends light to the eyepieces

CV Camera/View Sends light to the eyepieces and the camera

C Camera Sends light to the camera


The exposure ring [G] is a shutter which allows light from the microscope to hit the film in the camera. The amount of time the light is allowed to pass through it is selected using the dial at the from of the ring. To use the exposure ring:

  1. Set the exposure time on the dial

  2. Cock the shutter by pushing back the cocking lever [H]

  3. Take the exposure by pressing the cable release plunger [I]

Taking a photograph

  1. Insert film into camera

  2. With path selector [M] on V, use the microscope to find an area on your sample you wish to photograph

  3. Pull out path selector [M] to position C

  4. Set path selector [J] to V

  5. Sight up the final framing of the photograph using the reticule sights in the eyepiece

  6. Set path selector [J] to E

  7. Look at the meter reading on the exposure meter

  8. Adjust the power from the light box until the meter reads a round number (eg 30. 60 etc.)

  9. Dial the meter number on the exposure ring

  10. Set path selector [J] to CV

  11. Cock and fire the exposure

  12. Press the advance button [C] and wind on to the next exposure using the advance roller [D]

  13. Return path selector [M] to V


The Camera

A ASA Dial

B Exposure Number

C Advance Button

D Advance Roller

E Camera Back Release

F Rewind Knob

G Exposure Ring

H Cocking Lever

I Cable Release

J Path Selector

K Sighting Eyepiece

L Exposure Sensor

M Path Selector

N Main Eyepieces

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