Sekonic L-858D-U vs L-308X-U: Light Meter Comparison
By District Camera | Published: 2026-10-22
Category: Comparisons
Compare the Sekonic Speedmaster L-858D-U and Flashmate L-308X-U light meters. Find out which one fits your studio or field work best.
Quick answer
Choose the Sekonic Speedmaster L-858D-U for advanced studio work requiring high precision and a larger display, or the Sekonic Flashmate L-308X-U for a compact, budget-friendly option that handles ambient, flash, and basic cine metering.
Key differences at a glance
The Sekonic L-858D-U Speedmaster is a full-featured light meter with a standard configuration, priced at $468.52. It offers advanced metering capabilities suitable for demanding studio and location work. In contrast, the L-308X-U Flashmate is a pocket-sized meter that costs $161.40 and provides accurate ambient and flash metering plus dedicated Cine and HD Cine modes for video work.
The Flashmate's sliding lumisphere and 40° reflected-light receptor make it versatile for both incident and reflected measurements. However, it lacks some of the refined features and larger display of the Speedmaster, which may be important for photographers who need quick, precise readings in complex lighting setups.
Trade-offs to consider
- Price vs. features: The L-858D-U costs $468.52 (down from $689.00) and offers a larger display and advanced metering. The L-308X-U costs $161.40 (down from $269.00) and provides essential functions in a compact body.
- Portability vs. precision: The L-308X-U is pocket-sized and easy to carry, but its display and control layout are more basic. The L-858D-U is larger but gives you a more detailed readout and quicker adjustments.
- Video support: Both meters handle flash and ambient, but the L-308X-U includes dedicated Cine and HD Cine modes for video framerate and shutter angle. The L-858D-U focuses on still photography with higher precision. If you shoot video regularly, the L-308X-U's cine modes may be a deciding factor.
Product facts
- Sekonic Speedmaster L-858D-U Light Meter: The Sekonic Speedmaster L-858D-U is a light meter from Sekonic, listed in the Light Meters category. It is offered here in a Standard configuration. This means you get a professional-grade meter with a bright, easy-to-read display and advanced features for critical exposure control in studio and location shoots.
Sekonic Speedmaster L-858D-U Light Meter - Sekonic L-308X-U Flashmate Light Meter: The Flashmate L-308X-U light meter from Sekonic is a compact tool for metering both ambient and flash lighting as well as working in video with dedicated Cine and HD Cine modes. Equipped with a sliding lumisphere, it can measure ambient light and reflected light via a lens with a 40° reception angle. Its small size and dual metering capabilities make it ideal for photographers and videographers who need a portable, all-in-one solution without the bulk of larger meters.
Sekonic L-308X-U Flashmate Light Meter
Which one should you choose?
Best for
- Studio photographers who need precise, fast readings with a large display (L-858D-U)
- Budget-conscious shooters who want a reliable, compact meter for both stills and video (L-308X-U)
Not for
- On-the-go videographers who need cine-specific metering in a small package (L-858D-U is bulkier and lacks cine modes)
- Photographers who require advanced features like a large touchscreen or high-speed sync metering (L-308X-U is more basic)
