--- product_id: 41707851 title: "Sekonic L-858D-U Speedmaster Light Meter, Multi-Function Incident & 1∞ Spot Meter with Flash Duration Analysis, HSS Measurement & Wireless Radio Triggering Compatibility" brand: "sekonic" price: "C$82227" currency: NIO in_stock: true category: "Sekonic" url: https://www.desertcart.ni/products/41707851-sekonic-l-858d-u-speedmaster-light-meter-multi-function-incident store_origin: NI region: Nicaragua --- # Flash duration precision Built-in 1∞ spot metering Wireless radio trigger compatibility Sekonic L-858D-U Speedmaster Light Meter, Multi-Function Incident & 1∞ Spot Meter with Flash Duration Analysis, HSS Measurement & Wireless Radio Triggering Compatibility **Brand:** sekonic **Price:** C$82227 **Availability:** ✅ In Stock ## Summary > ⚡ Capture light like a visionary — never miss the perfect shot! ## Quick Answers - **What is this?** Sekonic L-858D-U Speedmaster Light Meter, Multi-Function Incident & 1∞ Spot Meter with Flash Duration Analysis, HSS Measurement & Wireless Radio Triggering Compatibility by sekonic - **How much does it cost?** C$82227 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.ni](https://www.desertcart.ni/products/41707851-sekonic-l-858d-u-speedmaster-light-meter-multi-function-incident) ## Best For - sekonic enthusiasts ## Why This Product - Trusted sekonic brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Freeze Motion Like a Pro:** Flash duration analysis including HSS for perfect action shots every time. - • **Unmatched Lighting Range:** Measures from -5 to 22.9 EV at ISO 100, conquering any lighting scenario. - • **Pinpoint Exposure Mastery:** Integrated 1∞ spot viewfinder for flawless highlight & shadow control. - • **Seamless Wireless Control:** Compatible with major radio trigger modules for remote flash power adjustments. - • **Precision Meets Portability:** Compact 8.8 oz design with intuitive digital interface built for on-the-go pros. ## Overview The Sekonic L-858D-U Speedmaster is a professional-grade light meter combining incident and 1∞ spot metering with advanced flash duration analysis, including high-speed sync (HSS). It offers a broad exposure range (-5 to 22.9 EV at ISO 100) and supports wireless radio triggering with popular lighting brands, making it an essential tool for photographers and cinematographers demanding precise, repeatable exposure control in any lighting environment. ## Description Sekonic L-858D-U Speedmaster is a professional multi-function light meter engineered for photographers and cinematographers who require advanced flash and ambient measurement precision. Featuring both incident metering and a built-in 1∞ reflected spot viewfinder, it enables accurate evaluation of highlights, shadows, and overall exposure balance. The meter measures flash duration including brief HSS bursts, providing critical data for high-speed sync and action photography applications. With an extended measuring range of -5 to 22.9 EV at ISO 100, it delivers reliable performance across diverse lighting environments. Designed to support multi-brand radio triggering modules, the L-858D-U integrates wireless control compatibility with select Phottix, Elinchrom, PocketWizard, Godox, and broncolor systems through optional transmitter modules. The intuitive interface streamlines exposure adjustments while maintaining professional-level accuracy. Included accessories such as strap, soft case, and anti-glare film enhance durability and usability in studio or field conditions. Built for demanding production workflows, the Speedmaster L-858D-U combines advanced flash analysis, spot precision, and wireless flexibility to deliver consistent, repeatable exposure control for modern photography and motion production environments. ## Features - Specifications: Incident ambient & flash metering, built-in 1∞ spot viewfinder, flash duration measurement including HSS, -5 to 22.9 EV range at ISO 100, optional radio triggering module compatibility, digital precision interface. - Flash Duration Precision: Measures brief flash bursts and HSS output to evaluate t.1 and t.5 durations, enabling accurate control of motion freezing and high-speed synchronization. - Integrated 1∞ Spot Metering: Built-in reflected spot viewfinder supports precise highlight and shadow analysis for advanced exposure balancing in complex lighting scenarios. - Extended Measurement Range: Broad EV range ensures dependable ambient and flash readings in low-light and high-intensity lighting environments. - Expandable Wireless Control: Compatible with optional radio modules supporting major lighting brands, enabling integrated flash triggering and remote power adjustment directly from the meter. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B06XD9K7PC | | Best Sellers Rank | #14 in Photographic Light Meters | | Customer Reviews | 4.5 4.5 out of 5 stars (196) | | Date First Available | March 2, 2017 | | Is Discontinued By Manufacturer | No | | Item Weight | 8.8 ounces | | Item model number | 401-858 | | Manufacturer | Sekonic | | Product Dimensions | 6.93 x 3.7 x 1.93 inches | ## Images ![Sekonic L-858D-U Speedmaster Light Meter, Multi-Function Incident & 1∞ Spot Meter with Flash Duration Analysis, HSS Measurement & Wireless Radio Triggering Compatibility - Image 1](https://m.media-amazon.com/images/I/711fXWdC3NL.jpg) ## Available Options This product comes in different **Style** options. ## Questions & Answers **Q: Is it cosine corrected?** A: The L-858's retractable incident Lumisphere provides standard or cosine corrected light readings. **Q: Does it have a tripod socket?** A: I think so. Not really sure. I hope that it’s not a deal breaker if it doesn’t? It’s the most awesome meter I have ever owned. **Q: does the case that comes with the meter have belt loops?** A: The case has one belt loop, which fastens with Velcro. **Q: I have already purchased the sekonic speedmaster l-858d-u and i got the unit yet i’ve noticed there is no transmitter module do i have to buy it ?** A: Yes, there are two radio modules available. One for Phottix/Elinchrom and one for Pocket Wizard ## Frequently Bought Together - Sekonic Speedmaster L-858D-U Light Meter (401-858) - Sekonic Transmitter Module RT-GX for L-858D-U Speedmaster Light Meter --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.ni/products/41707851-sekonic-l-858d-u-speedmaster-light-meter-multi-function-incident](https://www.desertcart.ni/products/41707851-sekonic-l-858d-u-speedmaster-light-meter-multi-function-incident) --- *Product available on Desertcart Nicaragua* *Store origin: NI* *Last updated: 2026-07-07*