These films are old school emulsions which are still produced according to the old ADOX formulations which were introduced in the 1950s.
Using ADOX CHS films ,your view on the world is the one of the 50s and 60s. It has a great tonal range, color separation and modulates differently from modern films. ADOX CHS films have their own feel and look to them.
Especially when pictures are dominated by blue sky the areas in the sky produce a very nice darker grey compared to more modern films giving the images a different depth and look.
The film has an ultra high silver content enabling it to produce rich grey scales and many tonal differences between black and white.
Pictures captured with ADOX film "come to life" in the print.
If developed in sharp working developers such as ADOX APH 09 the film develops a visible edge effect and very high accutance and detail depth.
Because of its low diffusion single layer technology the film is ultra sharp compared to modern multi layer films where the light will be diffused when penetrating through the different layers.
CHS stands for Cubiccrystal Heterodispers Single-Layer, which means the emulsion is made up of classic cubic crystals which are mixed in different sizes and coated in one layer.
The 25 speed film is the finest grain film with a classical behavior of low speed films. This means for example the film is generous against under exposure or reciprocity effect but can't cope with over exposure because it
can't shield itself from too much light. Also it's latidute is not as high as those of faster films.
For beginners we reccomend the ADOX CHS 50 or 100. The 50 has almost the flexibility of the 100 yet almost as fine a grain as the 25.
This makes the ADOX 50 the preferred film out of the range. It has finer grain and better tonalities than modern 100 ASA films, yet almost the same effective speed in certain developers.
The CHS 100 is the highest speed film which can be made based on this old technology. In the 1950ss it was called a "high speed film".
Being the fastest film it has the widest exposure latitude and contrast range but also develops the largest film grain out of the ADOX family.
So especially with this film you might want to use ADOX ATM49 developer because it will yield a much smaller grain than Rodinal or APH09.
If you use Pyro developers the ADOX CHS100 can reproduce almost one full more zone of copy range compared to more modern films.
All roll films (120 films) are supplied in dust proof light protecting black plastic containers.
Tips for use:
Put used roll films back into dustproof light protecting black plastic containers to avoid penetration of light.
Prewash sheet films to evenly dissolve the super coating to avoid developer-streaks.
Handle the wet emulsion with extreme care. It is softer than the emulsion of modern films. If necessary add a hardening bath (either put some hardener in the stop bath/fixer or dilute 5ml of hardener to 1 Liter of water and pre-harden the sheetfilms before putting them in the tray.
Readjust your developing time after pre-hardening.
Recommended Developing Times at 68ËšF / 20ËšC:
CHS 100 Art exposed at 100 ISO
Adox ATM 49: 7-8 min.
Adox APH 09 1+40: 12-14 min.
Adox ADX: 4.5 min (80 iso)
Kodak D76 / Ilford ID-11 / Arista 76: 8 min.
CHS 100 Art exposed at 200 ISO
Adox ATM 49: 10-11 min.
Adox APH 09 1+40: 17-20 min.
Adox ADX: not recommended
Kodak D76 / Ilford ID-11 / Arista 76: 11-12 min.
