SKU: 33535487384

Sekonic L-858D-U Speedmaster Light Meter

Sale price$269.55 Regular price$299.50
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Description

Sekonic L-858D-U Speedmaster Light MeterSekonic L 858D U Speedmaster Light Meter SE401858 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

Sekonic L-858D-U Speedmaster Light Meter - SE401858

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.

L-858D-U Speedmaster Light Meter - Technical Specifications

 

Measuring System

Incident light Swivel head Horizontal (270 degrees)
  Lumidisc Retractable
Reflected ligthg Switching incident/reflected Operation on LCD
  Light receiving angle 1degree(built-in)
  Viewfinder(Optional) No
Flash light Multiple flash mode  Yes
  Cordless/cord-in mode Yes
  Radio triggering mode PocketWizard Yes (optional)
  Radio triggering mode Elinchrom Skyport Yes (optional)
  Radio triggering mode Phottix Yes (optional)
  Flash duration analysis mode Yes
  HSS mode Yes

Measuring Range(ISO100)

Ambient Incident EV -5 to 22.9
  Reflected EV -1 to 24.4
  Option VF 1deg. EV No
  Option VF 5 deg. EV No
  Option VF 10 deg. EV No
  Illuminance LUX 0.1 to 2,000,000 lx
    FC(Foot-Candle) 0.01 to 180,000 fc
  Luminance Cd/m2 0.1 to 980,000 cd/m2
    FL(Foot-Lambert) 0.03 to 290,000 fl
Flash Incident F F0.5 to F161.2(=128.9)
  Reflected F F1.0 to F161.2(=128.9)
  Option VF 1 deg. F No
  Option VF 5 deg. F No
  Option VF 10 deg. F No

Display Range

ISO Sensitivity ISO   3 to 13,107,200
  ISO 2   No
Ambient Aperture Digital F0.5 to 161.2(=128.9)
    Step 1,  1/2,  1/3AV
    Decimal fraction 0 to 0.9(digital)
    Step 1/10AV
    Analog dot scale F1.0 to 90
    Step 1/3 AV
  Shutter speed Digital 30m to 1/64,000s
    Step 1,  1/2,  1/3 TV
    Analog dot scale 4s to 1/2,000s
    Step 1/3 AV
  Frame Rate Digital 1 to 1,000 f/s
  EV Digital -73.9 to 103.8 for incident
-69.9 to 105.3 for reflected
    Analog dot scale -3.0 to +3.0 EV for incident
-7.0 to +7.0 EV for reflected
    Step 1/3 EV
  Lux Digital 0.1 to 2,000,000 lx
    Step 2 significant digits
    Analog dot scale 0 to 1,000 lx
    Step in 50 lx
    Analog dot scale 0 to 5,000 lx
    Step in 250 lx
    Analog dot scale 0 to 25,000 lx
    Step in 2,500 lx
  FC(Foot-candle) Digital 0.01 to 180,000 fc
    Step 2 significant digits
    Analog dot scale 0 to 100 fc
    Step in 5 fc
    Analog dot scale 0 to 500 fc
    Step in 25 fc
    Analog dot scale 0 to 5,000 fc
    Step in 250 fc
  Cd/m2 Digital 0.1 to 980,000 cd/m2
    Step 2 significant digits
    Analog dot scale 0 to 50 cd/m2
    Step in 2.5 cd/m2
    Analog dot scale 0 to 250 cd/m2
    Step in 12.5 cd/m2
    Analog dot scale 0 to 2,500 cd/m2
    Step in 125 cd/m2
  FL(Foot-lambert) Digital 0.03 to 290,000 fl
    Step 2 significant digits
    Analog dot scale 0 to 20 fl
    Step in 1 fl
    Analog dot scale 0 to 100 fl
    Step in 5 fl
    Analog dot scale 0 to 1,000 fl
    Step in 50 fl
Flash Aperture Digital F0.5 to 161.2(=128.9)
    Step 1,  1/2,  1/3AV
    Analog dot scale  F0.1 to 90
    Step 1/3 AV
  Shutter speed Digital 30m to 1/16,000s
    Step 1,  1/2,  1/3TV
  EV Digital No
    Analog dot scale -3.0 to +3.0 EV for incident
-7.0 to +7.0 EV for reflected
    Step 1/3 EV
  Flash duration Digital 1/40 to 1/55,500(25ms to 18us)

Setting Range

ISO Sensitivity   ISO 3 to 13,107,200 plus 850
    Step 1/3 SV
    ISO 2 No
    Step No
Ambient Aperture F F0.5 to 161
    Step 1,  1/2,  1/3AV
  Shutter speed T 30m to 1/64,000s
plus 1/200, 1/400s
    Step 1,  1/2,  1/3TV
  Shutter angle degrees 1 to 358 deg. plus other 20 settings (customized from 0.001 to 360)
  Frame Rate frame per second 1, 2, 3, 4, 6, 8, 10, 12, 14, 15, 16, 18, 20, 23.976, 24, 25, 29.97, 30, 32, 36, 40, 47.952, 48, 50, 59.94, 60, 64, 72, 75, 90, 96, 100, 120, 125, 128, 150, 180, 200, 240, 250, 256, 300, 360, 375, 500, 625, 750, 1000 plus other 20 settings (customized from 0.001 to 99,999.999)
Flash Shutter speed T 30m to 1/16,000s
plus 1/75,  1/80,  1/90,  1/100,  1/200,  1/400s
    Step 1,  1/2,  1/3TV
  Flash duration  t value 0.1 to 0.9 (in 0.1 step)

Functions

Multiple cumulative Yes(Unlimited)
Average Yes
Shadow No
High light No
Zone System No
Flash Analyzing Yes(in 10% step)
Memory Yes(9 times) both incident and spot
Memory clear Yes (individually)
Contrast Function Yes(+/-9.9EV in 1/10 step)
Film memory (ISO 2) No
Filter compensation Yes(-12 to 12EV)
Filter factor number compensation Yes (preset 24 types plus 6 settings)
External receptor jack No
USB port Yes
Battery check Yes
Auto power off Yes (selectable.)
Under/Over exposure display Yes
Exposure Warning Indicator Yes
Exposure compensation Yes(-9.9 to +9.9)
Calibration compensation Yes(-1.0 to +1.0)
Exposure Profile Yes
Dip switch (L-358/608) No
Custom settings Yes (17 items)
Synchro terminal Yes
LCD backlight Yes
Water registance Yes
Switching incident/reflected Yes (software)
Retractable lumisphere Yes
Setting lock Yes (Touch panel)
How to change setting Touch panel operation
Diopter adjustment Yes (-1 to 2.5 D)
Tripod socket Yes

Others

Operating temperature -10 to 50℃
Storage temperature -20 to 60℃
Power source 1.5V x 2 (AA battery) and USB bus power
Weight 10.58 oz. (300 g)
Dimensions (W x H x D) 3.7 x 6.94 x 1.94 in. (93.9 x 176.3 x 49.4 mm)
LCD 2.4" color dot matrix LCD

Standard Accessory

USB cable No
CD-rom with Software & Manual No (download from website)
Sticker for multi-key &/or CS operation No
Quick Guide / Start Up Guide Yes
Lens Cap Yes
Strap Yes
Synchro terminal cap Yes (built-in)
Soft case Yes
Anti glare film Yes

Optional Accessory supplied

Booster No
Mini light receptor No
Viewfinder No
Lumishphere Yes
Lumidisc Yes (same as Lumisphere)
Lumigrid No
ND diffuser No
Pin point receptor No
Spot mask No
Synchro cord Yes
Radio wave triggering system Yes
Step-up ring Yes
18% Gray card (folded) Yes
Exposure Profile Target / II Yes

Item Includes

Start-up Guide, Strap, Lens Cap (Installed on the meter), Soft Case, Anti-glare sheet for LCD Screen, Safety precaution guide, USA warranty Card, 2AA batteries are not included
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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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.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 33535487384

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4.3 ★★★★★
Based on 26 reviews
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Scgirlie
Boise, US
★★★★★ 5
Surprisingly good!
Format: Kindle
I wasn’t sure I could forgive them and that’s always my issue with betrayal books - can I forgive the mmc, plural in this case, but the author was absolutely able to get me to that point. Yea I struggled with one them especially but overall I loved the book!! Followed the author immediately
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 29, 2025
M
mandie
Boise, US
★★★★★ 4
Amazing read!!
Format: Kindle
Where to begin. I loved this book. The characters had a way of pulling you in and making you holding your breath at the same time. I absolutely loved the fmc. Eva has a way of being vulnerable but strong. She is unwilling to give up. The mmc’s are truly horrible at the beginning. With that being said, I still found myself rooting for them. Over time you could them changing and how even when they wanted to hate her they just couldn’t find it in them. A truly remarkable love came from a terrible beginning. Loved it!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 12, 2025
S
S.O.
Houston, US
★★★★★ 3
Not bad but read better omegaverse
Format: Kindle
Mmm. I have feelings. Some not good. Some good. It was an ok read. I've been on a omegaverse kick for awhile now. Love me some groveling alphas but this wasn't it. Actually there wasn't enough groveling and the fmc gave in WAY too quickly. They all have f'ed childhood. The alphas, Dorian, Rafe and Cade met at an orphanage that did unspeakable things to them until Dorian and Rafe aged out at 18 and had ti wait a few years until they could "adopt" Cade, who was 3 years younger than them. They all become successful entrepreneur of sort, I think. They created an app called HeatLink. The fmc, Eva, was sold to the pack by her horrible, abusing father. She endured just as much hardship. She is relentless with escaping the pack but she always gave in when they got too near. Like she couldn't keep her legs closed. She hates them but gave in everytime. I found her kind of weak in that sense. The overall plot was fine. Didn't leave me yearning to read the next page. I did clock one of the identity of someone quickly though. Don't want to spoil it. Again, I've read better omegaverse books. The one good thing about the book is one of the lines from Cade on page 218: ""Please Eva. I'm sorry." She staggered back and I followed her on my knees, dragging myself. I didn't care. I just wanted her to hold me."" I'll admit, I melted a little bit for Cade, even though he was probably the worse a-hole out of the bunch.
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Reviewed in the United States on January 9, 2026
L
LaChante Anderson
Lowell, US
★★★★★ 5
Good Groveling!
Format: Kindle
⭐️⭐️⭐️⭐️.5|🌶️🌶️🌶️🌶️.5 This was really good! Definitely a dark romance! The plot was really good and was done well. I enjoyed the character development but I did wish the FMC told her pack she loved them at the end. Overall I would recommend this to readers who like bully romances and groveling! 💖
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Reviewed in the United States on February 24, 2026
A
Verified Purchase
Alice Wonder
Waukegan, US
★★★★★ 2
it went on too long…
Format: Kindle
At first it was a good read and I was really into it then it got to be a little to much with every page being more about how “slick” she was or about constant sex… I like spice don’t get me wrong but this was just a little too much after a while and the plot was lost. I also felt like the ending was weird and awkward it was just a good build up to fall flat
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Reviewed in the United States on May 23, 2026

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