Let’s have some ORWO MK-71 in the development tank.
Found few boxes of this film on internet market place. The seller did not know much about the film, there is no leaflet in the box, no specification for it in my ORWO photo materials handbook, not much on the internet. Sounds like perfect blind testing exercise of unknown films that I like much but I haven’t had for some time.
This particular box was best before March, 1984.
The boxes of this film I got are in 10.5 x 14.8 cm cut sheet format. As the largest format I can shoot is 6.5×9 cm (Mamiya RB67 Film holder type J) I had to cut the film to that format.
First, I opened the box to see emulsion side mark. And here is what I got: yellow, almost transparent sheet of film.
Most of the manufacturers of films in these times put a notch mark on the upper right side of the film, when you face the emulsion side. If you check the picture above you will notice that the upper right corner of the sheet is cut. Hence my conclusion about the emulsion side.
I had Kodak D-76 readily mixed, so I went for the bracketing test, a.k.a. the cardiogramme:
The band, from left to right: ISO 50, 25, 12, 6, 3, 2, 1, 0.5. Bracketing test sheets developed with Kodak D-76 for 6 minutes at 20°C, agitating softly every 60 seconds.
That, in my opinion, produces best results at ISO 3, or this is the 5th participant in the contest (from left to right).
Cut another 10 sheets of this film and went out to shoot them at ISO 3.
Mikro-Kopier film should have been used for some kind of archival of documents or similar facsimiles. What I know from other technical films is that that type of materials sports quite high contrast, with no interest in reproducing mid tones. If you by chance know this material and have technische daten — please ping me with them and I will publish ’em here.
My conclusion about this film:
- very fine grain and more than good grey tones, but I am sure that would change with your development mode;
- nice contrast and sharpness;
- delicate emulsion, so if you plan to cut it — be careful of scratches.