RANGE: One million to one (20 f/stop)
direct reading Multiple Range Linear Circuit. Digital
f/stop: f/0.35 to f/128 in 1/10-stop increments.
Analog f/stop: f/0.7 to f/45 in 1/3-stop increments.
PHOTOGRAPHIC ILLUMINANCE: Footcandles 0.1
to 70,000 and lux 1 to 100,000.
RATIOS: Calculates ratio of key plus fill
to fill light alone from 1:1 to 999:1.
DIFFERENCE: Displayed in precise 1/10-stop
increments up to Plus or Minus 12 f/stop.
Average of two readings and or continuous
averaging in f/stop and footcandle mode.
RANGE: ISO 3 to ISO 8,000 in 1/3-stop
SECOND: 2 to 360 (for motion picture
TIME: 1/8000 sec to 30 minutes.
FUNCTIONS: Memory Recall switch is to
recall stored reading in memory (M1), current reading
in memory 2(M2) and/or the Ratio, Average and f/stop
difference of the two readings.
Electroluminescent lamp for backlit liquid crystal
SOURCE: One 6 volt battery.
BATTERY LIFE: Approximately one year with
Two year limited warranty. Calibration is Traceable to
National Institute of Standard Technology(NIST),
All Spectra professional vi-a meters are supplied with