Sekonic C-500R ProDigi Color Light Meter

Once again Sekonic has answered the call when a more efficient and accurate meter is required. This one, the Prodigi Color C-500 Color Meter was designed to meet the needs of today's digital market.

This is the first meter to read the spectral sensitivity of color film, CDCD (CCD) and CMOS sensors used in current digital still and DV cine cameras.

The C-500 and C-500R color meters are not exposure meters. Their main function is "pre-production" light source color control.  With all the emphasis on Color Management and Workflow done electronically and in the camera or in post production, today's digital photographers seem to have overlooked the first step and foundation of the whole process, namely the light that makes image creation possible.

Custom white balance can do a good job of correcting color for a single light source. Add another, and there will be an unbalance that will cause color problems that will have to be dealt with later at a cost of time and money. In mixed light sources, blending flash with ambient (sun or indoor whatever) can be "cleaning up the color by adding some flash" which is the norm today. Or, with the C-500 and C-500R and a little light source filtration, it can be the seamless blending of illumination to make the photographer-added light virtually undetectable as it was done by photographers who "knew how" in the good old days of film.

This unique and groundbreaking meter measures and displays color temperature and compensation values in LB/CC index or filter numbers. The digital readings are based on human visual response while traditional film readings are determined by the individual characteristics of each film. Now, photographers and videographers have greater control over their exposures than ever before.

All of the advances in digital imaging have really solved a lot of problems and enabled taking shots that were impossible before. However, what goes on in front of the camera has not changed and should be dealt with if one is really serious about quality color management and actually controlled work flow.

Properly measuring red intensity was a major hurtle. Sekonic designers solved the problem by incorporating four color sensors: a Red sensor for visual/digital response (Rd); a Red sensor for photographic film response (Rf); a Green sensor (G); and a Blue sensor (B). They then developed a new "Simulated Spectrum" software solution (patent pending) that emulates the blue and green channel color response for both digital and film.

Illuminance Measurement 
The brightness of continuous light sources is displayed in LUX (lx) or Foot-Candle (FC). Illuminance measurement is especially useful for cinematography, videography, theatrical and other applications that require precise control light source brightness.

Color Values Displayed in Three Ways 
1) Color Temperature Display (in Kelvin) The color temperature is displayed for human visual response in Digital Mode or the spectral response for photographic color film in Film Mode.

2) LB /CC Index Display  Light Balancing in MK-1 (Per Mega Kelvin) and Color Compensation Index correspond to light source filtration systems. The correction values can be directly entered into the color adjustment mode of some professional DSLR cameras.

3) LB/CC Filter Number Display Light Balancing and Color Compensation filtration for lens or light-source filtration is displayed in direct filter values. The display can be adjusted to read out in Kodak Wratten, Lee or Fujifilm filter systems.

Important
To comply with local broadcast regulations, Sekonic wireless systems sold in the various markets around the world are designed to operate at different frequencies. When purchasing and/or installing a transmitter module or using the meter with a receiver, be sure that the meter, module and receiver are designed to be used in your location and use the same frequency.

The FCC designation indicates the meter and module are designed for operation in the USA/North American market. Frequencies: CH 1 to 16: 344.0 MHz; CH 17 to 32: 346.5 to 354.0MHz

The CE designation indicates the meter and module are designed for operation in European countries. Frequencies: CH 1 to 16: 433.62 MHz; CH 17 to 32: 434.22MHz

When purchasing and/or installing a transmitter module or using the meter with a receiver, be sure that the meter, module and receiver are designed to be used in your location and use the same frequency.

The wireless flash triggering system used in Sekonic meters consists of two parts that are designed to be used together and operate only at a specific frequency. Do not install a CE marked module into an FCC marked meter or FCC marked module into a CE marked meter as this will produce a unit that is not compatible with either frequency.

Note! The C-500R Model differs from the C-500 in that it also includes a wireless triggering module

Flash and Ambient light measurements
Simultaneous readings of flash and ambient light are available in non-cord, cord and wireless modes at shutter speeds from 1 to 1/500 second. Two intensity ranges, (H) high (f16 to f90.9) or (L) low (F2.8 to F22) allow measuring all types of flash units
Preset white balance/color compensation function
Nineteen presets enable adjusting display values to compensate for differences in film types, light sources, digital sensors, or personal preference. An eight-character readout on the display allows creating custom naming for easy identification of the compensation value.
Color/Brightness Difference Display (Memory/Function)
Electro-luminescent data display
Ambient measurement from EV3 to EV16.3 and Flash light measurement with reading - sensitivity from f/2.8 to f/90.9
Six Custom Settings that enable displaying shutter speeds in 1/3, 1/2 or full stops
Displays the selected color temperature in 100K or 10MK-1; LB Index display in 1MK-1 or 1daMK-1; LB filter display in Kodak/LEE or Fujifilm standards; Illuminance in foot candles or lux, both or no display; and auto power off in 5, 10 or 20 minutes

 

The specification of Sekonic C-500R ProDigi Color Light Meter 

Measuring SystemThree-color photographic color meter with four sensors to determine visual (digital) or photographic (film) color temperature of light sources and filtration required
Measuring ModesAmbient: Yes
Flash Cordless/Cord-in: Yes
Radio triggering: Yes (Model C-500R ONLY)
Receptor HeadRotating (90° to the right/180°to left) receptor head containing four filtered photo diodes under flat incident light receptor
Aperture/Shutter PriorityNot Applicable
Display ReadoutDot matrix display : 8 adjustable characters
Digital: Ambient/Flash light - Visual Color temperature + CC index
LB filter number + CC filter number: Fuji's LBA/LBB
Kodak Wratten/LEE filter number; LB index + CC index 
Display Ranges:
CC index: 80G to 80M
CC filter number: 200G to 200M
illuminance: 2.5lx to 610,000lx 0.23FC to 56,500FC
Film Ambient/Flash light: Photographic Color temperature; LB filter number + CC filter number (Fuji's LBA/LBB, Kodak Wratten/LEE filter number); LB index + CC filter number
lluminance: Ambient light only; Lux(lx); Foot-candle(ft-cd) 
Measured color temperature:
2,300K to 20,000K
Selected color temperature: 2,500K to 10,000K
LB index:  -500 to +500 (in MK-1) 
LB filter number
Fuji's:  LBA/LBB LBB20 to LBA20
Kodak Wratten/Lee: 80A+80D to 85B+81EF 
Radio Triggering Channel:
CH1 to 32 (C-500R only)
Quad-triggering zone A, B, C, or D (C-500R only)
ISO RangeMeasuring Ranges
Color Temperature: 2,300K to 20,000K
(At ISO 100 equivalent) Ambient light: EV3 to 16.3 (20lx to 200,000lx)
Flash light: Range Low F/2.8 to 22 (20lx/s to 1,300lx/s) Range High F/16 to 90.9 (640lx/s to 38,000lx/s)
f/Stop Display RangeFlash light:
Range Low: F/2.8 to 22 (20lx/s to 1,300lx/s)
Range High: F/16 to 90.9 (640lx/s to 38,000lx/s)
Shutter Speed - Ambient1 to 1/500sec
Shutter Speed - FlashFlash light: 1s to 1/500s (in 1, 1/2 or 1/3 steps) plus 1/75, 1/80, 1/90, 1/100, 1/200, 1/400
EV Range (ISO-100)Not Specified by Manufacturer
Cine SpeedsNot Applicable
Exposure MemoryNot Applicable
Shadow/Highlight CalculationNot Applicable
Brightness DifferenceYes
Flash to Ambient RatioNot Applicable
Multiple FlashNot Applicable
Exposure CalibrationColor calibration is done in the factory and MAC service center. The photographer can make Pre-Set corrections to reflect the differences in his system, which will be appreciated by film photographers
Power SourceTwo "AA" 1.5V batteries (Alkaline, Manganese, lithium, Nickel, NiCd and NiH)
Operating temperature range: -10 to +50° centigrade
Dimensions2.4 x 6.2 x 1.1" (62 x 158.6 x 28mm) (WHD)
Weight8.1 oz (230g) (with batteries)