For mixed lighting scenarios, the L-358 displays the combined exposure values of both flash and ambient light sources, including the percentage of flash in total exposure in 10-percent increments. Dual ISO buttons allow for quick exposure factoring when working with two differing film speeds, film and Polaroids, or other situations where comparison readings are desired.

The head of the L-358 swivels 270-degrees allowing you to ‘walk the set' while maintaining constant visual contact with the LCD display. An indigo, backlit LCD screen with large text and icons allows for easy referencing under all lighting conditions.

Incident readings of three-dimensional subjects are taken using the Lumisphere, which can be retracted for selective, narrower-field readings such as contrast ratios for flash lighting. For reflective readings, simply replace the Lumisphere with the Lumigrid (included), which reads the center 54-degrees of the scene. For reflected spot metering, 1, 5, and 10-degree viewfinder spot attachments are available as optional accessories. Up to nine exposure readings can be stored and ‘tagged' on the LCD's analog scale. Electronic flash exposures can be taken wirelessly or with a PC cord. Plug in the optional Sekonic RT-32 Radio Transmitter Module and you can wirelessly trigger any PocketWizard-enabled flash system within a 100' range.

The Sekonic L-358 displays an f-stop range of f/1.0 to f/90.9, and a shutter speed range of 30-minutes to 1/8000th-of-a-second (1/1000th in Flash mode), both of which can be displayed in full, half, and third-stop intervals to mirror your camera's exposure display. When set to ‘full', the exposure is displayed in tenth-of-a-stop increments with repeat accuracy of +/- 0.1 EV.

For motion picture applications, the L-358 calculates cine readings from 2 to 360 frames-per-second. As with all Sekonic meters, the Sekonic L-358 Flash Master includes a 1-year warranty and the best customer support you're ever likely to find.

Type:	Digital exposure meter for ambient and flash light
Light receiving method:	Incident light and reflected light
Incident light:	Convertible to flat diffuser (Lumisphere in down position)
Reflected light:	Light receiving angle 54° (Lumigrid)
Light receptor element:	2-Silicon photo diodes (incident and reflected)

Metering modes

Ambient light:	Aperture priority metering Shutter priority metering EV metering
Flash:	With synchro cord (cumulative and non-cumulative) Without synchro cord (cumulative and non-cumulative) Measurement using the optional wireless flash radio triggering system (cumulative and non-cumulative)

Radio Triggering (Optional)

Radio technology:	Complex 16/24 bit digitally coded
Range:	Up to 100 feet from transmitter to receiver
Channels:	1 to 16 channels standard, 17 to 32 “Quad Triggering”
Radio wave frequency:
USA & Canada  (FCC & IC)	CH1-CH16 344.00MHz CH17-CH32 346.50~354.00MHz
Europe (EU)	CH1-CH16 433.62MHz CH17-CH32 434.22MHz

Measuring Range (ISO 100)

Ambient light:	Incident light EV-2 to EV 22.9 Reflected light EV-2 to EV 22.9 (with 54° Lumigrid) Optional Spot:    1° EV5 to EV 24.4     5° EV3 to EV 24.4     10° EV2 to EV 24.4
Flash:	Incident light f/1.0 to f/90.9 (approx. f/124) Reflected light f/1.0 to f/90.9 (approx. f/124) with 54° Lumigrid Optional Spot:    1° f/8.0 to f/124     5° f/4.0 to f/124     10° f/2.8 to f/124
Repeat Accuracy:	+/- 0.1 EV or less
Calibration Constant	Incident light metering:   Lumisphere C = 340     Retracted C = 250 Reflected light metering:   K = 12.5

Display Range

Film speed:	ISO 3 to 8000 (in 1/3 steps)
Shutter Speeds:	Ambient light: 30 minutes to 1/8000 seconds (in 1, 1/2 or 1/3 stop) plus 1/200, 1/400 Cine speeds: 2, 3, 4, 6, 8, 12, 16, 18, 24, 25, 30, 32, 36, 40, 48, 50, 60, 64, 72, 96, 120,  128, 150, 200, 240,  256, 300, 360 frames per second (at a 180° shutter angle)
Flash:	30 minutes to 1/1000 second (in 1, 1/2 or 1/3 stop) plus 1/75, 1/80, 1/90, 1/100, 1/200, 1/400
Aperture:	f/1.0 to f/90.9 (in 1, 1/2 or 1/3 stop)
EV:	EV -9.9 to EV 40.1 (in 1/10 stop)
Analog scale
Aperture:	f/1.0 to f/90 (in 1/2 stop)
Shutter speed:	2s to 4k (1/4000) (in 1/2 stop)

Other features

All-weather feature:	JIS standard water resistance class 4, splash-proof type
Memory function:	9 readings on analog scale (f/stop & shutter speed) with memory recall and clear feature
Multiple Flash function:	Unlimited flash readings (only one digit is displayed when the cumulative number is ten or more.)
Average function:	Up to 9 readings can be averaged
Brightness Difference function:	+/- 9.9 EV (in 1/10 stop)
Flash analyzing function:	0 to 100% in 10% in increments
Exposure Out of Range:	U (underexposure) or O (overexposure) indication
Exposure compensation:	+/- 9.9 EV (in 1/10 steps)
Calibration compensation:	+/- 1.0 EV (in 1/10 steps)
Battery Power Indicator display:	With 3 level status icon
Auto Power Off:	20 minutes after last use
Auto illumination:	EV 6 and under
DIP switch mode selection:	Located under battery cover
Second ISO film speed setting:	ISO 3 to 8000 (in 1/3 stop)
Battery used:	One CR123A battery (3V Lithium dry cell)
Operating temperature range:	14° to 122° F (-10° to 50° C)
Storage temperature range:	-4° to 140° F (-20° to 60° C)
Dimensions:	2.4"W x 6.1"H x 1.5"D (60mmW x 155mmH x 37mmD)
Weight:	5.4oz (153gm) with battery

Standard accessories supplied:

Lumigrid, soft case, strap, synchro terminal cap, CR123A  Lithium battery

Optional accessories:      

• Cat# 401-361 1° Spot Attachment
• Cat# 401-362 5° Spot Attachment
• Cat# 401-363 10° Spot Attachment
• Cat# 401-855 Case for Meter with Spot Attachment
• Cat# 401-515 Mini Light Reception Unit (12mm Lumisphere)
• Cat# 401-621 Transmitter Module
• Cat# 401-801 Synchro Cord (3-way, 5 meter long - connect camera, light meter and flash)
• Cat# 401-801 Folding Stand-Up Gray Card

Note:
This radio triggering system may be used only in countries where a permit for the control frequency has been issued by the government office in charge.  There are several kinds of frequencies in the world, and we recommend you check if your transmitter(s) and receiver(s) are compatible with each other.

Features and specifications are subject to change without notice.