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    Bergger Panchro 400 4x5 25 sheets

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    BERGGER Pancro 400 is a fast, fine grain, black and white film for photographic purpose.



    Exposed at ISO 400, the film delivers outstanding high quality photographs. It gives also outstanding results from 100 to 1600 ISO, with adequate processing.



    BERGGER Pancro400 anti-halation layer is coated on the same emulsion side for every kind of film (135 and 120 roll films and sheet films). The undercoated anti-halation layer clears during processing. 



    BERGGER Pancro400 in sheets is coated on a 175 microns PET base and includes an anti curling layer. The emulsion faces the user when the notch is in the upper right or lower left corner.



    Data Sheet


    Availability: In stock

    £51.84

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    Film composition:

    BERGGER Pancro 400 includes two photographic Silver-Bromide/Iodide emulsions that differ in grain size in order to achieve the films outstanding exposure range. Pancro400 anti-halation layer is coated on the same emulsion side for every kind of film (135 and 120 roll films and sheet films). This gives the film its famous very high resolution.

    Spectral sensibility:

    BERGGER Pancro400 is a panchromatic film sensitive to all visible colours of the spectrum. Filter factors BERGGER Pancro400 may be used with all types of filters (eg colour, polarising and neutral density filters) in the usual way. For corrections, follow the instructions given by the filter manufacturer.

    Processing of film:

    Presoaking It is highly recommanded to presoak in water at least for one minute. The water should be at the same temperature as process temperature. Before using BERGGER PMK developer, the film must be presaoked in water for 5 minutes, at one degree warmer than developer.

    Developer:

    Developing times are given for a contrast of 0,7 in the following chart. It is recommended to agitate during the 30 first seconds, and then, ten seconds at the top of every minute. If using BERGGER PMK, the tank must be agitated during the 30 first seconds, and then two agitations every 15 seconds.

    Stop bath

    A stop bath, composed by acetic acid (2%) (therefore not odourless stop bath) can be used to stop the action of the developer, before using the fixer. Time of this bath must be comprised between 30 seconds and 60 seconds, and its temperature must be the same as the rest of the process. It is possible to replace this bath with a plain water bath, at the same temperatureas the process. Using water allows the film to continue developing in the shadows during the stop stage.

    Fixer: 

    BERGGER PANCRO 400 needs a longer the usual fixing time. In rapid, non hardenning fixer, it is recommended to use a dilution of 1+4 for 6 minutes.

    Washing:

    BERGGER recommands the following washing sequence, which is efficient and environment friendly. – A rinse in a sulphite bath (10 %) will allow to eliminate the chemicals complexes resulting from fix bath, and also allow the full dissolution of the anti-halation layer. – 10 washes in clear water, every ten minutes will allow to eliminate all chemical residue remaining in the gelatin. – Final rinse in demineralized water, with wetting agent at the concentration of 1+200.

    Drying:

    The film should be hung to dry in a dry and dust-free environment. It is recommended to eliminate the water drop that forms at the lower corner of the film, with a tissue, or absorbing paper.

    SKU BPA04
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