--- product_id: 41707851 title: "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: "€ 1346.71" currency: EUR in_stock: true reviews_count: 13 category: "Sekonic" url: https://www.desertcart.fi/products/41707851-l-858d-u-speedmaster-light-meter-multi-function-incident-1 store_origin: FI region: Finland --- # Flash duration precision including HSS Built-in 1° spot viewfinder for pinpoint metering Expandable wireless control with major brands 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:** € 1346.71 **Availability:** ✅ In Stock ## Summary > ⚡ Light up your shots with precision and speed — never miss the perfect exposure again! ## Quick Answers - **What is this?** 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?** € 1346.71 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/41707851-l-858d-u-speedmaster-light-meter-multi-function-incident-1) ## 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 - • **Versatile Lighting Range:** Wide -5 to 22.9 EV range ensures flawless readings from dim to intense lighting environments. - • **Pinpoint Exposure Control:** Integrated 1° spot metering lets you analyze highlights and shadows with surgical accuracy. - • **Seamless Wireless Integration:** Compatible with top radio triggering modules for remote flash control and power adjustments. - • **Master High-Speed Sync Like a Pro:** Accurately measure flash bursts and HSS output to freeze motion with precision. - • **Streamlined Workflow & Durability:** Intuitive touchscreen, customizable display, and rugged accessories keep you shooting longer and smarter. ## Overview The Sekonic Speedmaster L-858D-U is a professional-grade light meter designed for photographers and cinematographers demanding exact flash and ambient light measurements. Featuring a built-in 1° spot viewfinder, it offers precise highlight and shadow analysis, while its flash duration measurement supports high-speed sync (HSS) for advanced motion freezing. With an extended EV range from -5 to 22.9 at ISO 100 and compatibility with major wireless flash triggering systems, this meter streamlines exposure control in complex lighting setups. Its intuitive touchscreen interface and durable accessories make it an essential tool for high-end studio and location shoots. ## 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. Review: Essential tool for High Speed Sync. - Where to start here? Ok, I recently purchased some monolights with high speed sync ability, that I wanted to use with my D3. Outdoor usage, of course. I'm not big onto chimping over and over looking at the histogram to get a correct exposure. So I purchased a sekonic 208. Nice meter, for sure...easy to use. But it doesnt work with hss. Returned it. Did some research. The 858D is the only purpose built meter for hss. And it works, quite well, I might add. Accurate to a 1/10th of a stop. Has a 1 degree spot meter--fantastic. I know some people don't like the design, but I love it. Stop guessing and looking like a lower primate. Get this tool. It's worth every penny. Review: Speed up your workflow and increase accuracy - I’m a full time gaffer for film and music videos and this is a must have tool for anyone working in film or photography industries. I am much faster and more accurate when I light a scene now that I use this Sekonic Meter. Saves me time and it is much easier to recreate specific looks or match scenes from day to day. Mostly use the ambiance modes but for flash photography it is powerful as well. I highly recommend. I like the digital display and touch screen. It’s very clear to read and you can change the background colors which is nice. Don’t get a cheap meter this one is high quality. ## 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 | #17 in Photographic Light Meters | | Customer Reviews | 4.4 4.4 out of 5 stars (190) | | 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 ![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 ## Customer Reviews ### ⭐⭐⭐⭐⭐ Essential tool for High Speed Sync. *by J***T on June 11, 2018* Where to start here? Ok, I recently purchased some monolights with high speed sync ability, that I wanted to use with my D3. Outdoor usage, of course. I'm not big onto chimping over and over looking at the histogram to get a correct exposure. So I purchased a sekonic 208. Nice meter, for sure...easy to use. But it doesnt work with hss. Returned it. Did some research. The 858D is the only purpose built meter for hss. And it works, quite well, I might add. Accurate to a 1/10th of a stop. Has a 1 degree spot meter--fantastic. I know some people don't like the design, but I love it. Stop guessing and looking like a lower primate. Get this tool. It's worth every penny. ### ⭐⭐⭐⭐⭐ Speed up your workflow and increase accuracy *by S***N on April 24, 2021* I’m a full time gaffer for film and music videos and this is a must have tool for anyone working in film or photography industries. I am much faster and more accurate when I light a scene now that I use this Sekonic Meter. Saves me time and it is much easier to recreate specific looks or match scenes from day to day. Mostly use the ambiance modes but for flash photography it is powerful as well. I highly recommend. I like the digital display and touch screen. It’s very clear to read and you can change the background colors which is nice. Don’t get a cheap meter this one is high quality. ### ⭐⭐⭐⭐⭐ update *by P***N on December 15, 2025* goog but still I feel 758 is robust than this also just I was thinking why can't sekonic give a standard camera profiles update few popular brands like nikon /sony/cannon/hasselbd ## 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.fi/products/41707851-l-858d-u-speedmaster-light-meter-multi-function-incident-1](https://www.desertcart.fi/products/41707851-l-858d-u-speedmaster-light-meter-multi-function-incident-1) --- *Product available on Desertcart Finland* *Store origin: FI* *Last updated: 2026-05-07*