Film Cameras: the difference between a Rangefinder or Viewfinder (SLR)
Today I will be explaining the difference between a rangefinder and Viewfinder (SLR) camera. All the information provided below are based on my own experience with these types of cameras and lenses. Please note; this article is not a debate between the two cameras. It is only explaining the function of the two cameras. The cameras itself will depend on the type of user and the type of function required from the photographer.
The Viewfinder (SLR)
Take for instence the Yashica FX 7 as your typical film SLR Veiwfinder camera:
An SLR works with a view through the viewfinder, the lens reflects the light directed towards a mirror inside the camera angled at 45 degrees towards a prism inside the viewfinder. In essence, what you see is what you get.
When the shutter release of the camera is pressed, the mirror of the camera will jump up and the light will travel through the shutter towards the film, or if digital, towards the sensor.
How to focus with the Viewfinder (SLR) Focusing with a film viewfinder is quite easy. The focus ring of the lens can be turned until a clear focused image is visible through the Viewfinder.
The Rangefinder When viewing a subject through the Rangefinder, it will only indicate the subject that you are aiming at. The lens and the view through the rangefinder are independent, so what you see is not what you get. In essence your not seeing what the lens see but only what the view is through the rangefinder.
When the shutter release of the camera is pressed, the shutter will open and the light will be captured on the film, or if digital, towards the sensor.
How to focus with a Rangefinder. Now keep in mind with this type of camera you'll have to make use of good judgment Take for intense the Kodak Retinette:
The lens consists of a measuring focus. You’ll have to measure the distance between the object and the lens, say for instance its 3.5 feet, then turn the focus ring and set it on 3.5feet. The lens is now in focus and the image can be captured.
In conclusion, its important to note that there is a big age difference between the Kodak Retinette (rangefinder) and the normal SLR viewfinders of today. Thus, be wise when purchasing your first film camera as rangefinder cameras can make your job as a photographer very difficult in regards to focusing on the subject in the frame.