Sekonic L-858D-U Speedmaster Light Meter (401-858)
Sekonic L-858D-U Speedmaster Light Meter
With it's 2.7" color touch screen and truly innovative and sophisticated features, the Sekonic Speedmaster L-858D-U 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-U 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 duration, 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-U 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-U 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-U 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.
Specifications
| Meter Type | Ambient Cine Flash Spot |
| Spot Metering | 1° Spot |
| Flash Metering | Cordless |
| Light Reading Method | Incident Reflected |
| Light Readings | Candelas per Meter Squared (cd/m²) Foot Lamberts (fl) Footcandle Lux |
| Measuring Modes | Aperture Priority FPS Metering Flash Duration Analysis HSS Flash Shutter Priority |
| Aperture Range | Flash, Incident: f/0.5 to 128.9 at ISO 100 Flash, Reflected: f/1 to 128.9 at ISO 100 f/0.5 to 161.2 (1, 1/2, 1/3-Step Increments) at ISO 100 |
| EV Range | Ambient, Incident: -5 to 22.9 EV at ISO 100 Ambient, Reflected: -1 to 24.4 EV at ISO 100 |
| ISO Range | 3 to 13,107,200 (1/3-Step Increments), Plus 850 |
| Shutter Speed Range | 1/64,000 to 30 Minutes (1, 1/2, 1/3-Step Increments), Plus 1/400, 1/200 |
| Max Flash Sync Speed | 1/16,000 |
| Cine Speed / Shutter Angle | 0.001 to 1000 fps at 1 to 358° |
| Illuminance Range | 0.1 to 2,000,000 lux / 0.01 to 180,000 fc |
| Luminance Range | 0.3 to 290,000 fL / 0.1 to 980,000 cd/m² |
| Exposure Memory | Yes, 9 Readings |
| Receptor Element | Silicon Photodiode |
| Diffuser | Adjustable Spherical to Flat |
| Display | 2.7" / 6.9 cm Color Touchscreen LCD |
| Interface | PC Sync Terminal Micro-USB Port |
| Memory Card Slots | None |
| Tripod Mounting Thread | 1/4"-20 |
| Operating Temperature | 14 to 122°F / -10 to 50°C |
| Operating Humidity | 0 to 85% |
| Storage Temperature | -4 to 140°F / -20 to 60°C |
| Storage Humidity | 0 to 85% |
| Battery | 2 x AA (Alkaline, Manganese) |
| Wireless Connectivity | None |
| Radio System | None |
| Dimensions | 3.7 x 6.9 x 1.9" / 94 x 176 x 49 mm |
| Weight | 8.5 oz / 240.0 g (without Batteries) |