Konica Impresa 50

Konica Color Impresa 50 Professional was Konica's answer to Fuji Reala and Kodak Vericolor at the slow end of the color negative market. The pitch was finest grain, sharpest result, end of conversation. The data sheet backed up part of that: 63 line-pairs per millimeter at 1.6:1 test contrast and 160 line-pairs at 1000:1, on a triacetate base, with the CNK-4 development path that is fully cross-compatible with standard C-41.

The character was different from Fujichrome Velvia at the same speed. Saturation was held back. Skin tones leaned cool. Reviews from the late nineties placed it closer to the modern CineStill 50D in flavor than to anything in the Reala or Royal Gold families that working photographers were comparing it to at the time.

That deliberate restraint was the selling point for portrait studios and fine art reproduction, where pumping the color in the negative costs you control in the print. It was also the reason Impresa never broke out. Wedding labs and amateur shooters wanted the saturated look, and Impresa offered the opposite.

Format support was 35mm in 24 and 36 exposure rolls and 120 medium format. No sheet sizes were produced. Konica continued the line through their merger with Minolta in 2003, but the photographic products business shut down in 2006 and finished-product inventory drained through 2014. The film is now eBay and estate-sale only. Even cold-stored rolls show contrast loss and a blue or magenta cast, because cooler dye sets age unevenly across two decades.

Reciprocity on the Konica datasheet is gentle: no correction up to one full second, then plus a half stop at ten seconds. Zone Light Meter applies its standard correction past one second using an exponent of 1.20. A 30-second meter reading becomes about 60 seconds at the negative, which lines up closely with the original chart. For freezer-stock rolls, treat that figure as a floor and bracket toward more exposure rather than less.