Changing partly exposed films

If you want to change a film that you have only partly exposed, first rewind that film into the cassette (page 12). Rewind only as long as the reversing button rotates then stop. This will leave the trimmed film leader outside the cassette. Remove the film from the camera and mark on the cassette the number read off the film counter. When reloading the partly exposed film at a later date, first load it in the usual way and set the film counter to the diamond, then operate the rapid- wind lever with the film release button depressed until the number that you have marked on the film cassette reappears in the film counter window.

Eyesight correction

If you use spectacles but do not wear them while taking pictures and so cannot see the finder image clearly, you can order a special correction lens from your photo dealer. This lens screws into the finder eyepieces mount. When ordering please state the exact power required in dioptres +or -. No correction lenses can be supplied for correcting astigmatism.

Care of the camera

Protect your lens against damage and avoid finger prints on the lens surface and the finder windows. For cleaning outer glass surfaces preferably use a soft sable brush or special lens tissues. From time to time also dust the film track and cassette chamber with a brush.

Filters

Filters are used with black-and-white films to obtain correct tone rendering and for special effects. With colour films, used in a camera such as the RETINA automatic, filters are used to change the colour of the light to suit the particular colour film in use.

Most filters have what is called a filter factor. This is the factor by which the exposure must be increased to compensate for the light absorbed by the filter. With the RETINA automatic I, this is best allowed for by reducing the film speed setting

as follows:

Reduce the film speed setting by the following number of divisions

Kodak Filters for Black-and-White Films

Light yellow (F 1) - 2

Medium yellow IF II), yellow-green IF 111) - 3

Blue (F VI) - 4

Orange IF IV) - 5

Red (F V) - 4

The above filters must NEVER be used with colour films.

Kodak Wratten Filters for Colour Films

 

Wratten No. 1 A Skylight (ultra-violet) 0

 

Wratten No. 85

(amber) for using Kodachrome Film TypeA for daylight exposures

2

Wratten No. 85

B (amber) for using Ektachrome Film Type B for daylight exposures

2

Wratten Nr. 85C (amber) for using Ektachrome Film Type F and Kodachrome Film Type F