Single Lens Reflex (SLR)


RB67 © Phil Gee

The Mamiya RB67 uses a bellows focusing mechanism, has detachable Lens, Focus Hood and Film backs. The Lever shown on side winds on the film, cocks the between the lens shutter and reflex mirror after exposure.

Medium Format © Phil Gee

The Hasselblad style of SLR uses a helical focusing lens i.e. you rotate the lens body to focus, film wind on, mirror and shutter re cocking is achieved by using crank winder on side after exposure.


Format 60x45; 60x60; 60x70; 60x90
Film : 120 220 roll interchangeable back
Lens : Interchangeable
Viewing : Through taking lens via mirror to ground glass
focusing screen then pentaprism to eye image laterally inverted
Focusing : Lenses moved by Helical screw mechanism
Shutter : Between the lens
Exposure : Separate meter or Through the Lens metering (TTL)


Medium Format © Phil Gee


1. Light weight, portable, relatively easy to use.
2. Interchangeable lenses.
3. Precision of Focusing and Composition.
4. TTL available on most models with interchangeable heads..
5. Large range of film types and roll lengths available.
6. Power wind and motor drive facilities.
7. Large range of accessories available.
8. Between the lens Shutter Quiet and can Flash sync at all speeds.


1. View finder blanked out during exposure.
2. Many require battery power to operate.
3. Negative size limits degree of enlargement
4. Limited shutter speed range 1/500s max
5. No Camera movements
6. Expensive compared to 35mm and TLR

Obtain manufacturers information on this type of camera and familiarise your self with the operation of same.
For what type of photography would this camera be most suitable?

© 1982 Phil Gee


Work In Progress