Originally Posted by
IanG
Well Kodak make a 50 ISO emulsion but they had the ASA goal-posts tests changed so they could call if Tmax100, ISO allows use either ASA or DIN testing methodology for film speeds.
This is a film based on a slower emulsion than the old EFKE 100 which was a panchromatic 200 EI emulsion in Daylight, so it's a mistake to compare wrongly. There's no need for a 25 ISO emulsion like EFKE/Adox 25 if a newer upgraded emulsion gives a higher film speed with similar results in terms of tonality, grain and sharpness.
Mirko made a statement some time ago stating there was no chance they'd ever try an make a new version of Agfa APX25 which was by far the best of the slow emulsions, sales were so low and key ingredients no longer manufactured.
We have to remember that most film sales are still 35mm and there's almost zero demand for a slow film that's impractical to be used handheld except mid summer. Since I began using Kb14 (now called Kb25) there's been a huge improvement in other films. 40 years ago EFKE films were way ahead in terms of fine grain, sharpness etc but had very poor hardening. Since then though other films have caught up, now it's the chance for the new Adox films coated on ex-Agfa machinery.
Ian
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