Sekonic L-858D-U Offers

Provides up to 20 different measuring modes, this luminance/illuminance meter meets and exceeds the expectations of demanding lighting engineers and field evaluation technicians. With its flexible multi-function capabilities, this meter measures ambient light and flash bursts such as traffic camera systems and industrial, manufacturing, and scientific applications.

Features

• Incident metering for ambient and flash
• 1° spot metering with viewfinder
• Measuring range of -5 to 22.9 EV (ISO100)
• Illuminance range of 0.1 to 2,000,000 lux
• Extensive range of Cine and Video settings
• HSS flash and flash duration measurements
• Flash analyzing function; extended range
• 2.7" (7 cm) touchscreen LCD and all-weather design

Luminance meter

• 1° built-in spot meter: Measure advertising displays, instrument panels, traffic signs, or any luminance with quick and consistent real-time measurements
• Illuminated EL-digital viewfinder: Read measure values without the need to remove your eye from the light source
• Accurate targeting of the selected subject is easy with its SLR lens design
• An optional lens shade/step-up ring accommodates close-up lenses for extremely close measurements (sold separately)
• Adjustable diopter eye piece provides sharp viewing
• Utilizing its silicon photodiode sensor, it measures from 0.10 to 980,000 cd/m² (0.03 to 290,000 fl)

Illuminance meter

• Rotating/retractable lumisphere: Measuring streetlights, retail displays, warehouses, factories, stage lighting or any illuminance is repeatable and precise
• 2.7" (7 cm) color LCD touch screen: Displays continuous measurements to indicate brightness changes in real-time, as well as single measurements
• Analog scale: Simultaneously displays individually measured values
• Memory mode: Up to nine memorized values can be stored, recalled, and averaged
• Custom adjustments: Filter correction factors, user calibration, and compensation for fine-tune
• Utilizing its silicon photodiode sensor, it measures from 0.1 to 2,000.000 lx (0.01 to 180,000 fc)

Flash duration measurements

Measuring the flash duration or "burn time" of a flash is critical when determining the performance and consistency of a flash tube during manufacturing. Safety/hazard, traffic camera strobes, medical, entertainment, as well as photographic industries require accurate measurements of the duration of a strobe. Usually, a flash duration meter is offered only as a single function meter, but this meter puts all that in the past with selectable flash duration measures from 1/40 to 1/55,500 seconds (25 ms to 18 us) with t0.1 to t0.9 (in 0.1 steps).

1° spot with digital display

The rectangular 1° spot viewfinder displays cd/m², Footlamberts, EV, f-stop, shutter speed, percentage of flash, and much more with an EL (Electronic-Luminescent) digital display after switching from incident to spot measurement mode. It incorporates a parallax-free spot finder preventing erroneous close-up photography light measurements. With its super-sensitive sensor, this meter can measure the reflected flash output down to an amazing f/1.0 and ambient measurements as low as EV-1. In addition, it also includes an adjustable diopter eyepiece.

Memorize up to nine readings

This light meter can memorize measured values in both incident and reflected light modes independently or combined. Memorized values are recalled in the Tool Box menu, and displayed all at once. When one of the memorized values is selected, the value on the measuring screen appears. In addition, you can delete individual (selected) or all readings from memory.

Contrast function

The continuous measurement mode provides a contrast range measurement to evaluate the overall lighting conditions. In addition, you can also check lighting ratios or the evenness of an illuminated light source or the ambient light distribution of a warehouse, factory, greenhouse, or stadium illumination. Changes in the measured values are related to a saved measurement such as the center of a light source or selected brightness point within the environment by pressing AVE/ΔEV icon.

All weather design

All buttons, switches, and compartments are sealed, and the housing has been designed to endure rugged outdoor conditions with dust-proof and splash-proof (JIS Standard Water Resistance Class 4). Ideal for on-location shooting, at the beach, in rainy or in humid environments.

Applications

• Industrial lighting
• Lighting engineering
• Field evaluation
• Traffic camera systems
• Industrial
• Manufacturing
• Scientific
• Photography
• Videography
• Cinematography