Digitaltruth Photo - Product Tests

	ROLLEI INFRARED IR400	EFKE IR820
Grain	Very Fine	Moderate
Contrast	Excellent	Soft
Sharpness	Excellent	Average
IR Sensitivity	Good	Strong
Daylight Loading	Yes	No
Resolution	160 l/mm	110 l/mm
ISO/ASA for IR	25	25
Compare to	SFX 200, Konica Infrared	Kodak HIE
Pro +	Far superior in terms of fine grain, contrast and sharpness Clear polyester base best for archiving and scanning Excellent 400 ISO film without filter, ideal for shooting normal and IR images on the same roll! Milder IR effect can produce more effective images Withstands machine processing at high temperatures (40°C) Unrivalled quality control and batch consistency Easy daylight loading. No black bag needed.	Easier to obtain IR effects with standard red filter Graininess and low contrast create textural dreamlike quality
Con -	Requires Deep Red or Opaque filter for IR effects IR effect limited when IR levels are very low Polyester base can be hard to load if reels are damp	Requires absolute darkness when loading camera (35mm) Base fog and grain make for difficult scanning Grainy and lacking contrast Emulsion not suitable for machine processing above 25°C Highlights can blow out easily

Rollei Infrared IR400, ½ sec, f.16

Efke Infrared IR820, ½ sec, f.16

by Daryl Duckworth

Efke IR820 and Rollei Infrared IR400

A series of exposures were taken with a 135mm Symmar-S at f/16 using a Hoya R72 filter.

All films were all developed in ACU-1 (1+5) for 12 minutes.

1200 dpi scan detail shows the Rollei Infrared IR400 to be far superior to the Efke IR820 with regards to grain and tonality

Rollei @1200dpi

Efke @1200dpi

Note: All results have been provided by independent testers. Scans and images have NOT been manipulated.