Designed to meet the needs of photographers and filmmakers, the Sekonic Speedmaster L-858D light meter features numerous enhanced capabilities that make it an almost essential tool for professionals. It can take incident and reflected light measurements for flash and ambient light with an extended measuring range of -5 to 22.9 EV at ISO 100, or in an illuminance range of 0.1 to 2,000,000 lux. Users will also find it intuitive and easy to use thanks to its 2.7-inch colour touchscreen LCD and weather-resistant design. The light meter can use either a 270° rotating and retractable lumisphere or a built-in 1° spot viewfinder to adapt to the user's varied needs. Additionally, it offers a wide range of settings for cinema and video as well as the unique ability to measure flash duration and take measurements when using flash in high-speed sync. The L-858D is also equipped with various other functions, including memory recall, a flash analysis function and extended ranges on almost all settings. Furthermore, through the use of optional modules, users can add radio triggering support for PocketWizard and Elinchrom/Phottix systems. - The lumisphere receptor head rotates 90° to the right and 180° to the left and retracts to transform into a flat diffuser. - The built-in 1° spot viewfinder with full information display offers a precise method for measuring specific parts of a scene. - Ability to measure flash duration in a range of 1/40 to 1/55,500 second using t0.1 to t0.9 settings. - The L-858D's enhanced sensitivity allows it to record a measurement at just 0.1 lux illuminance as well as use an extended range of -5 to 22.9 EV for incident measurements and -1 to 22.4 EV for reflected light. It also has an extended ISO range of 3 to 13,107,200 with an option available for ISO 850. - Optional radio modules are available for PocketWizard and Elinchrom/Phottix systems for advanced wireless triggering and remote flash control. - High-speed sync support allows photographers to take accurate measurements while using HSS with their flashes and cameras. - The flash analysis function simultaneously measures ambient light and flash to provide a flash percentage in the final exposure. Users can then adjust the mix while the screen displays camera settings and the relationship between flash and ambient light in their exposure. - Users can determine their camera's dynamic range using optional targets by taking bracketed shots with their measurement data, then using Sekonic Data Transfer software to graph and record the information in the light meter. - Extended shutter speed ranges now allow measurements between 1/64,000 second and 30 minutes with ambient light and 1/16,000 second to 30 minutes for flash. - A complete set of cinema modes allows settings from 1 to 1000 fps as well as shutter angles from 1 to 358°. Twenty user-determined settings are also available, offering more precise options for shutter angles from 0.001 to 360° and from 0.001 to 99,999.999 fps. - The 2.7-inch colour touchscreen LCD provides a quick and intuitive method for viewing and changing settings. - The micro-USB port can be used for firmware updates, applying custom settings and for using exposure profiling. - The L-858D features weather-resistant construction that is dust and splash-proof (JIS Class 4).