New Sekonic Litemaster Pro L-478D and L-478DR Light Meters


The Sekonic L-478D and L-478DR are highly unique and innovative light meters that offer the first ever color touch-screen interface to facilitate still and cine incident light as well as flash metering capabilities. This visual interface lends itself to a more intuitive workflow through the ability to adapt the meter to your own workflow and needs. The meter is highly customizable and helps to streamline your process to incorporate only the functions you need. Conversely, the L-478’s breadth of features perfectly suits the demands of a more contemporary, post-medium image maker. Its tailor-made approach to functionality affords greater efficiency while working, yet is still capable of delivering results in a simple, easy-to-understand manner.

Touch-Screen Interface and Physical Design

The most notably different aspect of the L-478 series, compared to all other light meters, is its touch-screen interface. This simple addition allows the meter to be used much more intuitively, with a shallower learning curve to get up and running to full potential. Rather than having to learn more complex systems and configurations of buttons and dials, with the touch screen you can simply tap or scroll through the features you want to use or modify. The visual layout of the screen is easy to navigate and understand, carrying over much of the semiology from previous Sekonic meters.

Your exposure variable—shutter speed, aperture or ISO—is clearly displayed in the center of the frame with the defined exposure constants surrounding it. You can customize this appearance in a large variety of ways, including a choice of analog exposure scales (EV or f/-stops); 1, 1/2, or 1/3 step increments; the inclusion of 1/10 stops; and the option to hide metering modes you do not use frequently (such as cine modes for still photographers, or vice versa). Further enhancing the touch screen, the L-478 has one physical menu button for entering a more in-depth menu system for customization and profiling options. Also maintaining a similar layout to past Sekonic meters, there are two buttons located on both sides of the device; one for measuring and the other for storing, or memorizing, an exposure setting. These buttons’ functions can also be reversed depending on preference or handedness. There are also two ports: one for PC sync connection, located on the bottom, and the other a USB for updating firmware and connecting with your computer to input personally defined profiles and settings. The attached light receptor is on top and comes with a retractable lumisphere that can be rotated 90° clockwise or 180° counter-clockwise. The lumisphere is removable, allowing the attachment of the optional 5° spot viewfinder.  This spot attachment enables you to attain more selective, reflected-light measurements on specific subject matter.  The viewfinder design allows you to pinpoint the area in which you are metering, while not taking into account the light values from the surroundings.


Aside from benefits of the touch-screen design, this meter is also highly functional in a variety of other ways. It oscillates easily between having still image and cine functionality, as well as the ability to measure in footcandles, lux, foot-lamberts and candelas per square meter. It also serves as a flash meter with the option of built-in wireless control. These capabilities enable this light meter to effectively be a single solution for a new breed of image-maker that champions the growing popularity of HDSLR work. With video and still imagery becoming closer and closer due to the use of the same tools, it is becoming more commonplace to often work in both realms. This meter serves equally well in both applications, allowing you to select between common still image metering methods such as shutter speed and aperture priority, or between HDSLR or cine settings. When working in the moving image-based modes, you can alter settings such as frame rate, shutter angle, shutter speed and ISO.

In addition to straight incident and flash metering, the L-478 also enables you to easily calculate the difference between areas of the scene or the mixture between flash and ambient light within a scene. Using the contrast function, you can check light ratios in a comparative method directly on the screen. By taking a reading and pressing the AVE/EV button, you set this reading as the standard or constant light to which other readings are to be compared. Once you make your next readings, the display will indicate the difference between this first measurement and any subsequent ones. You can also memorize up to nine individual readings, allowing you to refer back to several different measurements in order to gain a wider perspective of the exposure range of any given scene.

Functioning similarly, you can also make comparative and analytical measurements when working with both flash and ambient light. When set to measure flash exposure, the meter will automatically record both ambient light and flash light and indicate the percentage of the overall reading that is flash exposure. This proves to be incredibly helpful for fill light and other instances when using selective flash to simply lighten a portion of the scene. In addition to the percentage being presented, the measurement scale on the display will also provide a graphical representation of this difference.

When working with a cinematic workflow, the L-478 caters equally well to two distinct motion-capture methods. If using an HDSLR, you can set your ISO, frame rate, and desired shutter speed and have the aperture show as the variable. For traditional rolling shutters, you can set all of the same information except have a shutter-angle setting in place of the shutter speed. Both of these metering modes are highly flexible in regard to modern camera design, allowing you to interpret exposure settings in creative ways with shutter angles ranging from 1° to 358°, and frame rates from 1 to 1000 f/s. Also benefitting movie-based work, brightness measurements can be made in lux or footcandles and candela per square meter (Cd/m2) or foot-lamberts. These values can be shown on their own or in conjunction with exposure measurements, too.

Offering another level of convenience and efficiency, the L-478 also affords you the ability to apply filter and exposure compensation directly to the reading; saving you the need to calculate exposure reductions in your head. You can set an overall exposure compensation setting for a quick-fix to modify your exposure readings by +/- 9.9 EV, or you can dial in specific filter factors. There are 24 common filter types pre-programmed—including most CTO and CTB densities, an 85 amber filter, plus and minus green filters and three neutral densities—or you can input your own settings (up to 30 total filter types can be stored). Up to four different filter settings can be used at a time in conjunction with one another.

Profiling and Adaptability

For even greater personalization, the L-478 supports customized profiling for tailoring the meter’s performance to your own equipment and decided-upon exposure settings. Calibration is possible using Sekonic’s Digital Transfer Software, which allows you to create highly accurate and personal exposure profiles for your specific camera’s dynamic range. These profiles are made using either the Sekonic Exposure Profile Target II or X-Rite ColorChecker and processing the results using the Data Transfer Software. This process is able to determine your camera’s dynamic range and exposure clipping points, which can then be transferred directly to your L-478 via USB connection. This range can then be displayed on your meter, giving you a much more personalized view of how to properly expose, depending on the equipment you are using. The L-478 can store up to 10 distinct personal profiles, giving you room to input data for several different cameras and also the ability to further modify or create these profiles through the meter, depending on the situation you are working in or for more personally oriented results.

In addition to adding exposure profiles to the meter, the Data Transfer Software is also utilized for further modification of user-defined customizable settings; personalizing frame rates, shutter angles, and filter compensation values; and for firmware upgrades whenever available.

Wireless Flash Power Control

The L-478DR has all of the aforementioned features, but also includes the ability to wirelessly control the power of your flashes via PocketWizard ControlTL technology. Pairing this technology within a light meter enables you to wirelessly adjust the power output from full to 1/64 power for either Nikon or Canon strobes that are mounted to a PocketWizard FlexTT5 transceiver, or to certain studio strobe packs using PocketWizard ControlTL receivers (such as the AC9 for Alien Bees or the ST4 for Elinchrom RX). It will also trigger standard PocketWizards like the Plus or MultiMax series, or any strobe with built-in PocketWizard support.

When working with the radio triggering mode, you configure your radio channel and zone settings (20 standard channels and 3 CTL zones are available) through the tool box menu in order to correctly match those on your PocketWizard devices. Once set up, you can adjust the power settings of each of the specified flashes in the Power Setting menu. You are provided with three different sliders, representing the A, B, and C zones; these can be turned on or off depending on how many flashes you are using. Adjust each light separately by moving the sliders and pressing the measuring button to measure that particular light; the resulting f/-number will appear over the zone indication on the meter. Once you have adjusted the power settings, return to the main measuring screen in order to take your exposure reading.

This reading will express the overall exposure value and the given percentage of flash-to-ambient light, which can then be varied by changing your shutter speed and ISO values. If you decide to alter the amount of flash light in the scene, return to the power settings menu to adjust the light output, using the sliders accordingly. Once the desired exposure has been set, you now adjust your camera settings to match those indicated by the L-478 and can trigger the same settings and light output measured when using a FlexTT5 transceiver or Mini TT1 transmitter attached to your camera. Working in this method can be highly efficient when using multiple light groups, or with strobes set a distance away, as you can change the light output settings from a single, wireless device.

Note that when using the L-478DR for wireless power control, the applicable PocketWizard units must be updated to the latest firmware. Furthermore, a Mini TT1 or Flex TT5 radio must be set to “No Change (Trigger Only)” mode. This will allow the L-478DR to function as the master controller, and ensure that your camera will not alter the power settings of the flash groups.

The L-478D and L-478DR light meters are a certain innovation in the way a light meter can fit within varied working methodologies and provide an apt exposure metering solution for current imaging trends. The amount of adaptability and wide-ranging support for a variety of photographic applications make these meters invaluable regardless of the medium in which you work. The touch-screen interface presents these options in a straightforward manner that allows users to gain the knowledge and technique to achieve the meter's full potential, as well as the ability to dictate which features and settings are most useful to one's own personal needs.

Sekonic Litemaster Pro L-478D / L-478DR
Type Digital light meter for flash and ambient light
Light-Receiving Method Incident light and reflected light
Light Receptor Incident: Lumisphere convertible to flat diffuser (with retracted lumisphere)
Reflected: 5° spot metering with optional viewfinder
Light-Receptor Element Silicon photo diodes
Measuring Mode Ambient: Aperture priority measuring, Shutter speed priority measuring, TF priority measuring, Cine measuring, HD Cine camera measuring, Illuminance measuring (lux, foot candle), Luminance measuring (foot-lambert, cdm2)
Flash: Cord Mode (with/without multiple cumulative), Cordless Mode (with/without multiple cumulative), Radio triggering Mode (with/without multiple cumulative) (for L-478DR only)
Measuring Range (ISO 100) Ambient- Incident: EV -2 to 22.9 (approx. f/2 at 15 sec. to f/22.9 at 1/8000 sec.) / Reflected: EV 3 to 19.9
Flash light- Incident: f/1.0 to f/128.9 / Reflected: f/2.8 to f/128.9
Illuminance- 0.63 to 2,000,000 lux / 0.10 to 180,000 fc (EV -2 to 19.6)
Luminance (Reflected Light)- 1 to 980,000 cdm2 (EV 3 to 22.9) / 0.29 to 290,000 fl (EV 1.5 to 22.9)
Repeat Accuracy +/- 0.1 EV or less
Calibration Constant Incident: Lumisphere C = 340, Flat C = 250
Reflected: K = 12.5
ISO Display Range ISO 3 to 409600 (in 1/3 steps)
Shutter Speed Display Range Ambient: 30 min. to 1/6400 sec. (in 1, 1/2, and 1/3 steps), 1/200 and 1/400 sec. also available
Flash: 30 min. to 1/1000 sec. (in 1, 1/2, and 1/3 steps), 1/75, 1/80, 1/90, 1/100, 1/200, and 1/400 sec. also available
Aperture Display Range f/0.5 to f/162.2 (in 1/3 steps)
Frame Rate (f/s) Display Range 1 to 1000 (20 types other possible settings)
Shutter Angle Display Range 1° to 358° (20 types other possible settings)
EV Display Range EV -27.9 to 55.8 (only effective with ambient light)
Analog Display Range T scale: 4 to 1/2000 sec. (in 1/3 steps)
F scale: f/1.0 to f/90 (in 1/3 steps)
EV scale:  EV -3 to 3 (incident light, in 1/3 steps) / EV -7 to 7 (reflected light, in 1/3 steps)
Illuminance lux: 0 to 50,000 lux
Illuminance fc: 0 to 5,000 fc
Luminance cd/m2: 0 to 2,500 cd/m2
Luminance fl: 0 to1,000 fl
Contrast Display Range EV -9.9 to 9.9 (in 1/10 steps)
Filter Compensation Display Range EV -5 to 5 (in 1/10 steps)
Cumulative Count 0 to 99 times
Compensation Display Range EV -9.9 to 9.9 (in 1/10 steps)
Custom Setting Functions 22 items (L-478D), 24 items (L-478DR)
Power Source 2x AAA dry cell batteries (alkaline, manganese, lithium, nickel hydride or nickel-based)
Operating Temperature 14-122°F / -10-50°C (no condensation)
Storage Temperature -4-140°F / -20-60°C (no condensation)
Dimensions 2.2 x 5.5 x 1” / 57 x 140 x 26mm
Weight 4.6 oz / 130 g (L-478D without batteries), 4.9 oz / 140 g (L-478DR with batteries)


When using the sekonic l478 dr and i try to measure flash I get f stops of 3.6 and 7... it is not reading 3.5 and 7.1 as it should.

It sounds as if the light meter is operating correctly.  For accuracy, by default, the Sekonic L-478 light meter is set up to display measurement values in one-step increments, and fractional 1/10-step increments are always displayed when set to the default setting.  If you wish to change this, you would have to follow the instructions on page 51 of the Sekonic L-478 instruction manual and adjust Custom Setting #1 [Increments of T+F] and you may choose either [1/3-step] or [1/2-step].  If you are trying to get the meter to exactly follow your camera, it would need to be set to 1/3-step.  You would then have to go to Custom Setting #2 [Display of 1/10 Step Increments] and set it to [OFF] (it is set to [ON] by default).  If the above does not work, then I would recommend contacting Sekonic directly for further assistance with your meter.

With 478 DR I use Pocket Wizard Minni TT1 and several Flex TT5. Originally I was able to measure wirelessly but all of a sudden it stopped. i don't know what I did.

Secondly when I go to Radio chan/zone, under "Standard" I see numbers that I don't understand. Could someone explain those numbers to me? Thank you, Charles

Hello Charles,

I'm sorry to hear that you're having trouble. For this inquiry, we ask that you e-mail us directly to Thank you.

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Does anyone know if the PIXAPRO® LUMI 200 200Ws Studio Flash with trigger is compatible with 478d/Dr light meter

No, it is not.  The PIXAPRO® LUMI 200 Studio Flash/trigger system uses its own proprietary radio trigger system which is not compatible with the Sekonic meters or other Pocket Wizard products. 

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Very well written!
I’ll immediately grab your rss feed as I can’t in finding your
e-mail subscription hyperlink or newsletter service.
Do you’ve any? Please let me know so that I may subscribe.

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Happy reading!

I have radio poppers.  someone told me that sedonic L-478DR will work with them.  Doesn't appear so.  Is this correct?

The RadioPopper Sekonic Module allows you to outfit your Sekonic light meter to wirelessly trigger the Nano and JrX receivers. This is useful for metering your flash lighting system. Additionally, this module features a range of up to 200' and working frequency of 902-928 MHz on the ISM band.


hello, i wanted to check to see if this will work with my Pockeket Wizard Plus in the matter of me controlling the power on the Nikon SB 910 and Nikon SB900.

Please advise.

No it will not unfortunately.  The plus model are manual only/non-TTL type units, and are only capable of triggering the flashes, they have no communication of exposure data to the flash.  In order to wirelessly control the output of an SB910, you would need to use a FlexTT5 transceiver with the SB910 mounted on top of it.  To trigger the FlexTT5 you would need to be using the MiniTT1 Radio Slave Transmitter for Nikon i-TTL System mounted on your camera's hot shoe.  See the following two links below for details on the FlexTT5 and MiniTT1 units.

I bought this meter from B&H recently, but have found it impossible so far to create a profile for my Nikon D800 that looks anything like a smooth line. If I'm doing something stupid let me know, but I've tried at least a dozen times and just get frustrated. Using strobes, using natural light, over and over with pretty much the same result - three disjointed zig zag lines. I was looking forward to using this meter, but my TTL meter readings deliver better results, than the uncalibrated 478D.


I am wishing to buy l-478dr to work with my elinchrom d-lite rx 4. I just wondering, do I need buy pocket wizard to make it work?

I was hoping to find a comparison between the L-478D/DR and the L-758DR/Cine but not even Sekonic has updated their comparison charts to include the L-478.

I get the impression that the L-478 more have more features at a lower price point especially if you add the 5 degree spotmeter.



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