About Fotokemika / Efke
For users of traditional black & white films and papers made by Fotokemika (Efke), a photographic firm located in Samobor, Croatia.
Efke films are made according to the original ADOX formulations obtained under licence from DuPont. They are coated on dip and dunk machines which allow Efke to run small micro lots thereby ensuring a continually fresh supply of film even at low volume. These films are some of the last old-fashioned single layer emulsions still being made, which means that light scattering is minimised and sharper images are possible compared to modern multi-layer films. When developed in high acutance developers such as ADOX APH09, Tetenal Neofin Blau or Amaloco AM50, clear edge effects will be visible. The 25 and 50 speed films are pan-orthochromatic, thus large expanses of blue sky are rendered slightly deeper grey without the need to use the yellow K2 filtre, and indoor scenes under tungsten illumination are rendered more naturally, giving these emulsions the classic look of films from the 30's and 40's.
For normal exposure, the following exposure indices apply:
Efke 25: E.I. 14 DIN (20 ASA, ISO 20/14°, ГОСТ 16)
Efke 50: E.I. 17 DIN (40 ASA, ISO 40/17°, ГОСТ 32)
Efke 100: E.I. 21 DIN (100 ASA, ISO 100/21°, ГОСТ 90)
For optimum differentiation of highlights, the following values are recommended:
Efke 25: E.I. 18 DIN (50 ASA, ISO 50/18°, ГОСТ 45) + push 33% to 50%
Efke 50: E.I. 21 DIN (100 ASA, ISO 100/21°, ГОСТ 90) + push 33% to 50%
Efke 100: E.I. 24 DIN (200 ASA, ISO 200/24°, ГОСТ 180) + push 33% to 50%
Overexposure is not recommended with Efke films.
(In former times the Efke and ADOX films were packaged in boxes that reflected their DIN sensitivity, thus the packages bore designations KB14, KB17, KB21, R14, R17, R21, etc. and you can sometimes still see usage of these designations when referring to these films.)
Fotokemika produce some of the last remaining silver gelatin photographic papers that are developed the traditional way in a darkroom. These papers have a rich quality quite similar to the classic black & white papers of decades past. Containing a very high silver content and made using old-fashioned single-pour coating techniques, the papers have a characteristically long tonal range.
The Varycon and Varycon PE papers are variable contrast and compatible with both Ilford Multigrade and Fotokemika Varycon filtres. Varycon is available in heavyweight baryta support while the Varycon PE is available in medium weight resin coated support.
The Emaks and Emaks PE papers belong to the class known as chlorobromide papers, so they are suitable for printing images with a pleasant warm tone. They are available in three different contrast grades, on either single or double weight baryta support for Emaks or medium weight resin coated support for Emaks PE.
All of the papers should be used with a standard red safelight, as an OC (light amber) safelight can produce fogging.
The group also allows images taken with ADOX CHS (not CHM) films and also Mitsubishi Gekko, since these films are made by Fotokemika for distribution under these two labels.
Please include tags which indicate which type of film or paper was used. Additional details such as developer and dilution used would be greatly appreciated.
http://www.fotokemika.hr/
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Additional Information
 This is a public group.
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