Cinematography
Advanced Digital Exposure Meter
The Spectra Professional IV-A-SP is a unique optical exposure meter system. Simply attaching the Spectra Professional IV-A Advanced Digital Exposure Meter (ADEM) to its Spectra® One Degree Photospot converts your Spectra Professional IV-A into a high-sensitivity, one-degree Spotmeter for narrow-angle reflected-light measurements. Spectra Professional IV-A-SP Exposure Meter PhotoSpot System model # 18007-ASP is an Advanced Digital Exposure Meter for motion picture video and digital photography applications.
Advanced Digital Exposure Meter
The Spectra Professional IV-A-SP is designed to measure highly accurate light intensity and covers illuminance levels from 0.1 to 70,000 footcandles and 1 to 100,000 lux. And in the reflected spot metering mode, measurement levels are from 0.1 to 70,000 footlamberts. -- that is a sensitivity dynamic range of almost one million to one!
The Spectra Professional IV-A-SP
The Spectra Professional IV-A-SP is designed to measure highly accurate light intensity and covers illuminance levels from 0.1 to 70,000 footcandles and 1 to 100,000 lux. And in the reflected spot metering mode, measurement levels are from 0.1 to 70,000 footlamberts. -- that is a sensitivity dynamic range of almost one million to one!
digital f/stop
The Spectra Professional IV-A-SP has a digital f/stop measuring range that extends from f/0.35 to f/128 in 1/10-stop increments and an Analog Bargraph range from f/0.7 to f/45 in 1/3-stop increments, in both incident and reflected (one-degree spot) modes.
Cinematography
Cinematography equipment, like any other equipment, requires regular maintenance and repair to ensure it is working properly. This can include things like cleaning lenses, adjusting focus, and calibrating the camera's sensor.
Advanced Digital Exposure Meter (ADEM)
The Spectra Professional IV-A-SP is a unique optical exposure meter system. Simply attaching the Spectra Professional IV-A Advanced Digital Exposure Meter (ADEM) to its Spectra® One Degree Photospot converts your Spectra Professional IV-A into a high-sensitivity, one-degree Spotmeter for narrow-angle reflected-light measurements.
photographic illuminance
Widest Sensitivity Range Ever! Measures f/stop from f/0.35 to f/128, photographic illuminance from near total darkness- 0.1 footcandles to full 70,000 fc and 1 to 100,000 lux. Contrast Ratio Measurements (Ratio mode) The ratio of two readings from l:l to 999:1 can be instantly calculated and displayed thereby simplifying the set-up of any lighting situation. And, in f/stop mode, the difference in f/stop between a new reading and the last memorized measurement is displayed in precise 1/10 –stop increments up to plus or minus 12 f/stop.
Photo/ videography repair & Calibration
Spectra Light Laboratories
The Spectra Professional IV-A-SP is a unique optical exposure meter system. Simply attaching the Spectra Professional IV-A Advanced Digital Exposure Meter (ADEM) to its Spectra® One Degree Photospot converts your Spectra Professional IV-A into a high-sensitivity, one-degree Spotmeter for narrow-angle reflected-light measurements.