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Sekonic L-858D Speedmaster Flashmeter & Exposure meter. Sekonic L-858D Speedmaster Light Meter. With it's 2.7" color touch screen and truly innovative and sophisticated features, the Sekonic Speedmaster L-858D leads the way to the next generation of light measurement control as the world's first multi-function light meter for photographers and filmmakers. Leveraging over 60 years of experience in the image-making world with cutting-edge technology, the Sekonic Speedmaster L-858D has undergone a significant design change and boasts a comprehensive feature set sure to meet and exceed the demands of today's photographers and filmmakers. The first meter of its kind capable of measuring flash, while also being able to achieve an accurate ambient exposure reading in dimly lit scenes as low as 0.1 lx, the Sekonic L-858d provides image-makers of all levels with the critical exposure data they need to create stunning and beautiful imagery. The first to provide wireless compatibility with Elinchrom, Phottix, and PocketWizard products, the Sekonic Speedmaster L-858D also provides ultimate control to photographers seeking a faster and more streamlined workflow. Limitless creative possibilities are within reach through the meter’s ability to measure High Speed Sync (HSS) and calculate proper ambient-flash exposure for precision flash exposure control. With an increased light-sensitivity and extended ISO and Shutter Speed Ranges, the Sekonic Speedmaster L-858D enables all image-makers to obtain measurements in extremely low light and turn those readings into creative decisions. Finally, matching the high-ISO capabilities of today’s cameras, by accurately metering in low-light, is finally possible.
Dual Metering System
High-Speed Sync Support
Wireless Flash Power Control
Ultra-Fast Flash Duration Measurements

Features Sekonic L-858D Speedmaster Light Meter
Flash Duration Measurements
Understanding flash duration is the first step in freezing fast-moving subjects. Since all cameras are limited to relatively low sync speeds, stopping motion in a single image is often achieved by leveraging short flash durations with the camera’s max sync speed. A long-held secret of some of the world’s most talented photographers, the key to freezing action consistently is found in being able to measure flash duration. Photographers are now able to do this easily for the first time, demystifying one of photography’s most challenging techniques.


Radio Control Modules for Wireless Triggering
Having pioneered wireless exposure measurement, the L-858 Speedmaster Pro expands upon this ground-breaking innovation by adding functionality for Elinchrom Skyport and Phottix Strato II/ Ares II users allowing more photographers to experience the benefits of wireless freedom. With the Combined Elinchrom & Phottix Module, photographers have full Skyport triggering and power-control capabilities, while Phottix users have Strato II and Ares II triggering capabilities.
Video

Increased Light Sensitivity
Increased ISO capabilities in today’s cameras have created a need for light meters to increase their ability to measure light in the dimmest of settings. With an additional 3-stops of light sensitivity for incident light, 2-stops of light sensitivity for reflected light (spot), and an ability to capture a reading down to 0.1 lx of Illuminance, accurately metering scenes lit by candlelight or getting the right measurement for long-exposure night photography is now a possibility.

HSS Flash Measurements
The L-858D is the first meter of its kind that can measure the stroboscopic pulses fired from strobes when they are used for Hi-Speed Sync. Finally, photographers now have an accurate way of measuring their lights when they want to overpower the sun or achieve a very shallow depth of field through using HSS.

Flash Analyzing Function
The L-858D is especially useful for on-location shooting to lighten shadows or reduce background detail. That's because it measures ambient and flash simultaneously and automatically indicates the percentage of flash in the total exposure. You can easily adjust the ambient flash mix by turning the Jog Wheel. The digital display indicates the camera settings and an analog display shows the relationship between ambient and flash and the total exposure.

Determining the Dynamic Range of your camera
Shoot with the equipment you use most. Make tests under daylight and studio lighting. Exposure Profile Target requires an 11-shot bracket (0, +/- 5EV). Exposure Profile Target II shown at the right requires a 3-shot bracket (-3EV, 0,+3EV). Make a spot reading of 18% reflectance tone and incident reading in front of target and record data. Shoot the bracketed shots based on incident light measurement.

Entering Data
Download test images into computer. If shot in RAW, convert to TIFF for computation. Enter ISO, incident, and reflected light shooting data. Then select images and press OK to watch the Sekonic Data Transfer Software program graph the dynamic range of your DSLR camera. Save the data for transfer to the L-858D.

Full information Spot Viewfinder
The 1-degree spot meter has a broad reading range from EV 1 to EV 24.4 for ambient light and measures flash down to an amazing f/2.0. Its large, bright viewfinder with diopter correction and full-information data display give you everything you need to make the right exposure decisions without having to take your eye from the eyepiece.

Additional Features
Expanded Shutter Speed Range for Ambient Light
Measure ambient light for shutter speeds between 30 min. to 1/64,000s
Expanded Shutter Speed Range for Strobe
Measure strobes for shutter speeds between 30 min. to 1/16,000s
Extended ISO Range
Additional ISO range from ISO 3 to ISO 13,107,200, with ISO 850 for cinema cameras
Full HD Cine and CINE modes
Measure from 1 to 1000 fps or shutter angles of 1 to 358 degrees
Filter Compensation Mode
Photographers and filmmakers using high-density ND filters now have a filter factor of up to 12EV. Save up to 30 “favorites,” to instantly know what exposure compensation needs to be considered.
2.7” Color dotmatrix touch screen
Allows users to quickly and easily change settings and read important information
Connectivity with MAC/PC DTS Software
Upgrade firmware, apply custom settings, and utilize exposure profiling
All-Weather Design
Dust-proof and Splash proof (JIS Standard Water Resistance Class 4, Splash-Proof Type) for continued reliability and durability on-set, in any location.

Measuring System

Incident light Swivel head Horizontal (270 degrees)
Lumidisc Retractable
Reflected ligth Switching incident/reflected Operation on LCD
Light receiving angle 1degree(built-in)
Viewfinder(Optional) No
Flash light Multiple flash mode Yes
Cordless/cord-in mode Yes
Radio triggering mode PocketWizard Yes (optional)
Radio triggering mode Elinchrom Skyport Yes (optional)
Radio triggering mode Phottix Yes (optional)
Flash duration analysis mode Yes
HSS mode Yes
Measuring Range(ISO100)

Ambient Incident EV -5 to 22.9
Reflected EV -1 to 24.4
Illuminance LUX 0.1 to 2,000,000 lx
FC(Foot-Candle) 0.01 to 180,000 fc
Luminance Cd/m2 0.1 to 980,000 cd/m2
FL(Foot-Lambert) 0.03 to 290,000 fl
Flash Incident F F0.5 to F161.2(=128.9)
Reflected F F1.0 to F161.2(=128.9)
Display Range

ISO Sensitivity ISO 3 to 13,107,200
ISO 2 No
Ambient Aperture Digital F0.5 to 161.2(=128.9)
Step 1, 1/2, 1/3AV
Decimal fraction 0 to 0.9(digital)
Step 1/10AV
Analog dot scale 1.0 to 90
Step 1/3 AV
Shutter speed Digital 30m to 1/64,000s
Step 1, 1/2, 1/3 TV
Analog dot scale 4s to 1/2,000s
Step 1/3 AV
Frame Rate Digital 1 to 1,000 f/s
EV Digital -73.9 to 103.8 for incident
-69.9 to 105.3 for reflected

Analog dot scale -3.0 to +3.0 EV for incident
-7.0 to +7.0 EV for reflected

Step 1/3 EV
Lux Digital 0.1 to 2,000,000 lx
Step 2 significant digits
Analog dot scale 0 to 1,000 lx
Step in 50 lx
Analog dot scale 0 to 5,000 lx
Step in 250 lx
Analog dot scale 0 to 25,000 lx
Step in 2,500 lx
FC(Foot-candle) Digital 0.01 to 180,000 fc
Step 2 significant digits
Analog dot scale 0 to 100 fc
Step in 5 fc
Analog dot scale 0 to 500 fc
Step in 25 fc
Analog dot scale 0 to 5,000 fc
Step in 250 fc
Cd/m2 Digital 0.1 to 980,000 cd/m2
Step 2 significant digits
Analog dot scale 0 to 50 cd/m2
Step in 2.5 cd/m2
Analog dot scale 0 to 250 cd/m2
Step in 12.5 cd/m2
Analog dot scale 0 to 2,500 cd/m2
Step in 125 cd/m2
FL(Foot-lambert) Digital 0.03 to 290,000 fl
Step 2 significant digits
Analog dot scale 0 to 20 fl
Step in 1 fl
Analog dot scale 0 to 100 fl
Step in 5 fl
Analog dot scale 0 to 1,000 fl
Step in 50 fl
Flash Aperture Digital F0.5 to 161.2(=128.9)
Step 1, 1/2, 1/3AV
Analog dot scale F0.1 to 90
Step 1/3 AV
Shutter speed Digital 30m to 1/16,000s
Step 1, 1/2, 1/3TV
EV Digital No
Analog dot scale -3.0 to +3.0 EV for incident
-7.0 to +7.0 EV for reflected

Step 1/3 EV
Flash duration Digital 1/40 to 1/55,50025ms to 18us
Setting Range

ISO Sensitivity ISO 3 to 13,107,200 plus 850
Step 1/3 SV
ISO 2 No
Step No
Ambient Aperture F F0.5 to 161
Step 1, 1/2, 1/3AV
Shutter speed T 30m to 1/64,000s
plus 1/200, 1/400s

Step 1, 1/2, 1/3TV
Shutter angle degrees 1 to 358 deg. plus other 20 settings (customized from 0.001 to 360)
Frame Rate frame per second 1, 2, 3, 4, 6, 8, 10, 12, 14, 15, 16, 18, 20, 23.976, 24, 25, 29.97, 30, 32, 36, 40, 47.952, 48, 50, 59.94, 60, 64, 72, 75, 90, 96, 100, 120, 125, 128, 150, 180, 200, 240, 250, 256, 300, 360, 375, 500, 625, 750, 1000 plus other 20 settings (customized from 0.001 to 99,999.999)
Flash Shutter speed T 30m to 1/16,000s
plus 1/75, 1/80, 1/90, 1/100, 1/200, 1/400s

Step 1, 1/2, 1/3TV
Flash duration t value 0.1 to 0.9 (in 0.1 step)
Functions

Multiple cumulative Yes(Unlimited)
Average Yes
Shadow No
High light No
Zone System No
Flash Analyzing Yes(in 10% step)
Memory Yes(9 times) both incident and spot
Memory clear Yes (individually)
Contrast Function Yes(+/-9.9EV in 1/10 step)
Film memory (ISO 2) No
Filter compensation Yes(-12 to 12EV)
Filter factor number compensation Yes (preset 24 types plus 6 settings)
External receptor jack No
USB port Yes
Battery check Yes
Auto power off Yes (selectable.)
Under/Over exposure display Yes
Exposure Warning Indicator Yes
Exposure compensation Yes(-9.9 to +9.9)
Calibration compensation Yes(-1.0 to +1.0)
Exposure Profile Yes
Dip switch (L-358/608) No
Custom settings Yes (17 items)
Synchro terminal Yes
LCD backlight Yes
Water registance Yes
Switching incident/reflected Yes (software)
Retractable lumisphere Yes
Setting lock Yes (Touch panel)
How to change setting Touch panel operation
Diopter adjustment Yes (-1 to 2.5 D)
Tripod socket Yes
Others

Operating temperature -10 to 50
Storage temperature -20 to 60
Power source 1.5V x 2 (AA battery) and USB bus power
Weight 10.58 oz. (300 g)
Dimensions (W x H x D) 3.7 x 6.94 x 1.94 in. (93.9 x 176.3 x 49.4 mm)
LCD 2.4" color dot matrix LCD


Sekonic makes tools such as light meters, color meters and illuminometers to help photographers and cinematographers measure and control light for the perfect exposure.
Sekonic... Because it's all about controlling the light.