Rollei Retro 400S Black & White Negative - 120 Film, Single Roll

Storage & Handling:

• Always protect from direct sunlight
• Minimum shelf life as indicated on package: Storage at below Ø 24°C
• develop at short notice after exposure
• avoid high storage temperatures of more than 40°C

Filter Factors:

By using yellow or red filters, you can increase the tonal values in the respective wavelengths. In general, filters of all kinds, i.e. color, pole, neutral density filters, can be used as usual.

• Please follow the manufacturer‘s recommendations.
• Yellow filter for contrast enhancing cloud rendering
• Orange filter for clearer long-distance vision
• Red filter for a more dramatic image mood

Layer Structure of the Film:

→ Protective coating 
→ Emulsion layer 
→ Antihalation layer (AHU) 
→ Carpet pad PET 
→ Back Layer

Development:

As is well known, the development result is not only dependent on time, temperature and developer type, but also on the development method (tank, dish, processor). In order to achieve reproducible results, the following instructions must be observed:

• When processing in developing cans, the can must be moved (tipped) continuously during the first minute and then every 30 seconds. Development times of less than three minutes should be avoided!
• When processing in development drums (rotary development), the speed of rotation should be greater than 30 rpm (with changing direction of rotation). Development times of less than three minutes should be avoided.

Can Development:

When developing and fixing the film in a tank with a reel, the following applies: Agitate in the first 60 seconds continuously, then for 5 sec every 30 seconds. Hint: After each tilting rhythm, there should be a short push on the table top. This releases air bubbles adhering to the film. Compared to developing trays in open containers, the advantage is that work can be carried out in ambient light. In addition, the agitation of the tank can be mechanized.

Rotation Development:

In general, the processing conditions of rotary development (e.g. Jobo) are very similar to those of manual can development. The advantages of rotary development are:

• Reduced chemical consumption 
• Shorter development times 
• More constant working conditions (temperature)
• Higher reproducibility of the result

Due to the permanent agitation, a rough rule of thumb for rotary development applies: 10 to 15% shorter development times than in manual hand development (can). Processing times are given by the respective manufacturer of the machine.

Machine Development:

Rollei films can be processed in all common developing machines (e.g. rotary, hanger, drag belt or roller transport machines).
The loss of sensitivity is taken into account during a TTL measurement of the camera. If external light meters are used, the filter factors listed below are used to adjust the effective film speed in order to obtain a correct measurement.