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Description
Sekonic Speedmaster L-858D-U Light MeterIncident Metering for Ambient & Flash 1 Spot Metering with Viewfinder Measuring Range: 5 to 22. 9 EV (ISO 100) Illuminance Range: 0. 1 to 2,000,000 lux Extensive Range of Cine & Video Settings HSS Flash & Flash Duration Measurements Flash Analyzing Function; Extended Range 2. 7" Touchscreen LCD; All Weather Design Optional Radio Control Modules Aiming to provide for the needs of both photographers and filmmakers, the Speedmaster L 858D U Light Meter
- Incident Metering for Ambient & Flash
- 1� Spot Metering with Viewfinder
- Measuring Range: -5 to 22.9 EV (ISO 100)
- Illuminance Range: 0.1 to 2,000,000 lux
- Extensive Range of Cine & Video Settings
- HSS Flash & Flash Duration Measurements
- Flash Analyzing Function; Extended Range
- 2.7" Touchscreen LCD; All-Weather Design
- Optional Radio Control Modules
Aiming to provide for the needs of both photographers and filmmakers, the Speedmaster L-858D-U Light Meter from Sekonic comes packed with a variety of upgraded features and capabilities that make it an almost essential tool for a working professional. It is able to take incident and reflected light readings of both flash and ambient light with an expanded measuring range of -5 to 22.9 EV at ISO 100, or within an illuminance range of 0.1 to 2,000,000 lux. Users will also find it intuitive and easy-to-use thanks to the use of a 2.7" color touchscreen LCD and an all-weather design.
The meter can use either a 270� rotating and collapsible lumisphere or an integrated 1� spot viewfinder to account for varying needs of the user. Also, it offers an extensive range of cinema and video settings as well as the unique ability to measure flash duration and to take readings when using high-speed sync flash. The L-858D-U is equipped with a variety of other functions as well, including memory recall, a Flash Analyzing Function, and extended ranges on nearly every setting. Additionally, through the use of optional modules, users can add radio triggering support for PocketWizard and Elinchrom/Phottix systems.
- Lumisphere receptor head rotates 90� right and 180� left and retracts for conversion to a flat diffuser.
- Integrated 1� spot viewfinder with full information display provides a precise method of measuring specific parts of a scene.
- Ability to measure flash duration within a range of 1/40 to 1/55,500 second using t0.1 to t0.9 settings.
- Improved sensitivity of the L-858D-U allows it to record a reading at just 0.1 lux illuminance as well as use expanded range of -5 to 22.9 EV for incident readings and -1 to 22.4 EV for reflected light. Also, it features an extended ISO range of ISO 3 to ISO 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 accurately take readings while using HSS with their flashes and cameras.
- Flash Analyzing Function measure ambient and flash simultaneously to provide a percentage of flash in the final exposure. Users can then adjust the mix as the display shows camera settings and the relationship between the flash and ambient light in your exposure.
- Users can determine the dynamic range of their camera using optional targets by taking bracketed shots with their measurement data and they using the Sekonic Data Transfer Software to graph and then save the information to the meter.
- Expanded shutter speed ranges now allow for readings between 1/64,000 second to 30 minutes with ambient light and 1/16,000 second to 30 minutes for flash.
- A comprehensive set of cinema modes allows for settings of 1-1000 fps as well as shutter angles of 1-358�. Twenty user determined settings are also available that provide more precise options of 0.001-360� shutter angles and 0.001-99,999.999 fps.
- 2.7" color touchscreen LCD provides a fast and intuitive method for viewing and changing settings.
- Micro-USB port can be used for firmware updates, applying custom settings, and to use exposure profiling.
- The L-858D-U features an all-weather construction that is dust and splash proof (JIS Class 4).
In the Box
Sekonic Speedmaster L-858D-U Light Meter
- Anti-Glare Sheet for LCD Screen
- Lens Cap
- Strap
- Soft Case
- Limited 1-Year Warranty with 2-Year Extension upon Online Registration
| Type | Digital light meter for flash and ambient light |
| Radio Frequency | None |
| Receptor Element | Silicon photo diodes |
| Receptor Head | Incident Light: Lumisphere convertible to flat diffuser, rotates 90� right & 180� left Reflected Light: 1� spot viewfinder |
| Measuring Modes | Ambient Light F priority (aperture) T priority (shutter speed) TF priority (shutter speed and aperture) HD Cine (shutter priority, FPS metering, lux, or fc) Cine (FPS metering, shutter angle setting, lux, or fc) Illuminance (lux or fc) Luminance (cd/m� or fl) Flash Light Cord (PC sync terminal) Cordless Radio triggering (optional) HSS Flash (cordless) Flash Duration Analysis (cord, cordless, or radio) |
| Measuring Range | Ambient Light (ISO 100) Incident: -5 to 22.9 EV Reflected: -1 to 24.4 EV Flash Light (ISO 100) Incident: f/0.5 to f/128.9 Reflected: f/1.0 to f/128.9 Illuminance 0.01 to 180,000 fc / 0.1 to 2,000,000 lux Luminance 0.03 to 290,000 fl / 0.1 to 980,000 cd/m� |
| Repeat Accuracy | 0.1 EV or less (Incident light: from EV-2, Reflected light: from EV1) 0.2 EV or less (Incident light: under EV-2, Reflected light: under EV1) |
| ISO Range | 3 to 13,107,200 in 1/3 steps, 850 |
| Shutter Speed | Ambient Light: 1/64,000 sec to 30 min, 1/200, & 1/400 sec, in 1, 1/2, and 1/3 steps Flash Light: 1/16,000 sec to 30 min, 1/75, 1/80, 1/90, 1/100, 1/200, & 1/400 sec, in 1, 1/2, and 1/3 steps |
| Flash Duration | 1/40 to 1/55,500 sec (25 ms to 18 us) t0.1 to t0.9 |
| Aperture | f/0.5 to f/128.9 (in 1 step) f/0.5 to f/152.4 (in 1/2 steps) f/0.5 to f/161.2 (in 1/3 steps) |
| Frame Rate | 1-1,000 fps, and 20 user settings from 0.001-99,999.999 fps |
| Shutter Angle | 1-358�, and 20 user settings from 0.001-360� |
| EV Range | Incident Light: -73.9 to 103.8 EV Reflected Light: -69.9 to 105.3 EV |
| Memory Function | 9 readings |
| Connections | 1 x PC sync terminal 1 x Micro-USB port |
| Screen | 2.7" / 6.9 cm color touchscreen LCD |
| Power Source | 2 x AA batteries (alkaline or manganese) |
| Tripod Mount | Yes, 1/4"-20 |
| Operating Conditions | Temperature: 14 to 122�F / -10 to 50�C Humidity: 0 to 85% |
| Storage Conditions | Temperature: -4 to 140�F / -20 to 60�C Humidity: 0 to 85% |
| Dimensions | 3.7 x 6.9 x 1.9" / 94 x 176 x 49 mm |
| Weight | 8.5 oz / 240 g without batteries |
| Packaging Info | |
|---|---|
| Package Weight | 1.45 lb |
| Box Dimensions (LxWxH) | 10.2 x 6.5 x 3.7" |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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4.2 ★★★★★
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Product Reviews
★★★★★ 5
My go-to sublimation paper for crafting
Size: 8.5"x11"
I've used several sublimation papers, and this one has worked really well for my crafting projects. The colors transfer bright and vibrant, and the images come out crisp with good detail when using the proper sublimation printer and ink. The paper feeds smoothly through my printer and feels like a good quality weight—not too thin and not overly thick. I've used it for tumblers, keychains, and other sublimation projects, and I've been happy with the results. I also appreciate getting 110 sheets in one pack because it lasts a while, especially when working on multiple projects at once. Overall, this is a reliable sublimation paper that gives consistent results and is great for crafters or small business owners.
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Reviewed in the United States on May 31, 2026
★★★★★ 5
Bright, Dependable, and Jam-Free — Excellent Printer Paper!
Size: 1 Ream | 500 Sheets, Style: Letter (8.5x11)
The Amazon Basics Multipurpose Copy Printer Paper is a dependable and high-quality choice for all the daily printing needs, offering a bright white finish that makes text and images look sharp and professional. It feeds smoothly through the printer without any jams or misfeeds, which is essential for maintaining productivity throughout the day. The 20 lb weight feels sturdy and durable, making it perfect for everything from internal memos to important client documents. A great value-for-money purchase that provides consistent results every single time.
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Reviewed in the United States on May 23, 2026
★★★★★ 5
A Reliable Office Essential That Keeps Our Body Shop Running Smoothly
Size: 10 Reams | 5000 Sheets, Style: Letter (8.5x11)
In a busy auto body shop, we print a lot of paperwork every single day. Between repair estimates, insurance documents, invoices, work orders, and customer paperwork, having a dependable supply of printer paper is a necessity. Amazon Basics Multipurpose Copy Printer Paper has become one of those products that we always make sure to keep in stock.
The quality has been excellent for our everyday office needs. It feeds through our printers smoothly, produces clean, sharp documents, and we haven't experienced the jams or inconsistent performance that can sometimes come with lower-quality paper. Whether we're printing simple forms or detailed estimates, it gets the job done.
Another reason we continue to purchase it is the value. Running a business means paying attention to operating costs, and this paper offers a great balance between affordability and quality. We go through a large volume of paper, so being able to save money without sacrificing performance is a huge advantage.
I also appreciate the convenience of ordering it through Amazon. Instead of making extra trips to the office supply store, we can have it delivered directly to the shop and know that we'll always have enough on hand when we need it.
Overall, this has become our go-to copy paper for our business. It's dependable, high quality, and priced competitively. For any busy office, repair shop, or business that prints a large amount of paperwork, I think this is an excellent choice. We will definitely continue to purchase it and keep it stocked in our office.
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Reviewed in the United States on June 7, 2026
★★★★★ 5
Great paper good price
Size: 3 Reams | 1500 Sheets, Style: Letter (8.5x11)
This is a solid everyday paper option that does exactly what it’s supposed to do.
The packaging was good—everything arrived in perfect condition with no bent corners or damaged reams. It’s nice not having to deal with warped paper right out of the box.
Printing quality has been consistent. I’ve used it for both home and work printing, and it feeds smoothly through the printer without jams. The brightness is good too—text comes out clear and sharp, and colors look decent for standard copy paper.
Overall, it’s reliable, good quality paper at a fair price. I’d definitely buy it again.
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Reviewed in the United States on June 8, 2026
★★★★★ 5
Nice daily use paper for ink jet printers. A good white rating too. OK for occasional color
Size: 1 Ream | 500 Sheets, Style: Letter (8.5x11)
Very good paper for daily use on ink jet printers. Good price, fast deliver, and packaged well. It even works well for color printing but not what you want for high quality glossy color prints.
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Reviewed in the United States on May 30, 2026