Top 20 Best A6400 Flash That You Should Buy- Ultimate Guide, Review & Comparison

The future of the best a6400 flash is here, and we’ve got all the best picks for 2024. We have compiled 24813 reviews from top experts that led us to these 20 devices on the list.

The Best A6400 Flash Deals This Week: 

Bestseller No. 1
NEEWER Z1-S TTL Round Head Flash Speedlite for Sony with Magnetic Dome Diffuser, 76Ws 2.4G 1/8000s HSS Speedlight, 10 Levels LED Modeling Lamp, 2600mAh Battery, 480 Full Power Shots, 1.5s Recycling
  • 【Natural and Stunning Lighting Effect】 The NEEWER Z1-S flashlight boasts a circular fresnel head that ensures an even distribution of light, creating a soft falloff at the edges. With a stable color temperature of 5600K (+/-200K), it delivers consistent lighting. The flash zoom head (28–105mm) can be set automatically or manually. The built in 2W LED modeling lamp provides 10 adjustable brightness levels, ranging from 01 to 10
  • 【Advanced Performance】 Equipped with a powerful 76Ws output, it offers TTL auto flash, manual flash, stroboscopic flash, and optical slave modes (S1/S2). With high speed sync up to 1/8000s and first curtain/second curtain sync options, it provides precise control over your lighting. Enjoy additional features like flash exposure compensation (FEC), flash exposure bracketing (FEB), and more
  • 【Built in 2.4G Wireless Q System】 with 4 groups (M/A/B/C), 32 channels (1-32), and 99 ID (1-99), compatible with QPro-S TTL transmitters (both not included). The speedlight can also be used as a Master/Slave flash to control other flashes with a transmission range of up to 328'/100m (no obstacles). The light illumination is uniform and the output is stable, which greatly expands your creative possibilities for flash photography. Plus, it supports USB firmware update
  • 【High Capacity Battery & Flexible Bouncing】 The 7.4V 2600mAh lithium battery (NB-Z1) provides 480 full power flashes, 1.5s fast recycling time, and a flash duration between 1/300s and 1/20000s, ensuring an enhanced shooting experience. The flash head allows horizontal adjustment from 0° to 330° and vertical adjustment from -7° to 120°, delivering unparalleled shooting versatility
  • 【Magnetic Dome Diffuser & Wide Compatibility】The dome diffuser softens and spreads light evenly, reducing harsh flashes and shadows. The flash light also works with GM-M1, CR-M2, AK-R1 kits, S2 type and CRB1 mounts. Compatible with Sony A9 II A9 A7R V A7R IV A7 IV A7R III A7S III A7 III A7S II A7R II A7 II A7S A7 A7C A1 A6600 A6500 A6400 A6100 A6000 A99 A350 Cameras, Note: Firmware can be upgraded if incompatibility issue occurs.
Bestseller No. 2
Sony Alpha a6400 Mirrorless Digital Camera with 16-50mm Lens (Black) Bundle with E-Mount Lens (Black), 64GB Memory Card, 32GB Flash Drive, Battery Grip, Rechargeable Battery and Charger (11 Items)
  • Bundle Includes: Sony Alpha a6400 Mirrorless Digital Camera with 16-50mm Lens (Black), 55-210mm f/4.5-6.3 OSS E-Mount Lens (Black), 64GB V60 UHS-II M-Series Memory Card, 32GB Ultra Flair USB 3.0 Flash Drive, Battery Grip for Sony a6000 and a6300, Rechargeable 1300mAh Battery and Dual Charger, Soft Carrying Case (Black), The Corel Photo, Video, and Art Suite Deluxe v.3.0, Tripod, 2-in-1 Aluminum Shell OTG Dual Slot SD Card Reader and Rugged Memory Storage Carrying Case
  • 24.2-Megapixel APS-C Image Sensor: Create images of astounding beauty that surpass your expectations with the Sony a6400s newly developed 24.2- megapixel APS-C CMOS sensor. The same size as most DSLRs, this sensor offers high sensitivity in dimly lit environments and strikingly attractive foreground and background defocusing
  • BIONZ X Image Processor: Astonishingly fast, Sonys sophisticated BIONZ X image processor reproduces textures and details in real time as seen by the naked eye. The resulting images in the Sony Alpha a6400 mirrorless camera are remarkably realistic with especially rich tonal gradations and a natural three-dimensional appearance. The processor is lightning fast, giving you continuous shooting up to 11 fps
  • 425 AF Points: The Sony Alpha a6400 mirrorless has higher-precision contrast-detection AF (Fast Intelligent AF) points, with an improved Fast Hybrid AF system features the world's fastest 425 extremely accurate phase-detection AF points that covers 84% of the entire image area for superior auto focusing
  • Touchscreen and Viewfinder: The Alpha a6400 mirrorless camera features a 180-degree fully tiltable LCD touch screen for self-recording. The 180 degree tiltable, 3.0-type LCD flip screen has 921k-dots of resolution that allows for simple and effective framing of selfie-style shooting for both still and video capture. It has a high quality XGA OLED Tru-finder viewfinder to help you hone in on your subjects
Bestseller No. 3
NEEWER NW420-S Mini TTL Speedlite Flash, 2.4G Master Slave Mode GN36 HSS Speedlight, Compatible with Sony A9 A7R A7 IV A7S III A7 III A7S II A7 II A7C A1 A6600 A6500 A6400 A6100 A6000 A99 A350
  • 【Compact Size Yet Impressive Power】 With an optimized flash head and Fresnel lens, this mini NW420-S speedlite has a brilliant light gathering ability and even light distribution in all directions. GN36 guide number (ISO100, 105mm) and 5600K (±200K) stable color temperature provide consistent flash outputs. Focal length is automatically or manually adjustable from 24mm to 105mm
  • 【Multiple Flash Control Modes】 The speedlite features TTL, manual (M), and stroboscopic (Multi) modes, 1/350-1/20000s flash duration, 0.1-2.2s recycling time, exposure compensation, 1/8000s high speed sync (HSS), front & rear curtain sync, and S1/S2 optical control modes. The maximum number of stroboscopic flashes is 90 at 90Hz for freezing a sequence of movements
  • 【2.4GHz Wireless Q System】 With 3 groups (A/B/C), 32 channels (1-32), and 99 ID (1-99), the speedlite is compatible with QPro-S TTL transmitters (not included). It can be used as a master/slave unit to control other flashes in a transmission range of 98.4'/30m (unobstructed). The uniform and stable illumination helps innovate flash photography, and it supports firmware update via a micro USB port
  • 【Adjustable Bouncing Angles】 The head with 270° rotation and 7° down/90° up tilts can bounce flashes for diffused and natural effects. The diffuser, wide angle diffuser panel, and inbuilt reflector soften flashes and make eyes sparkle in portrait photography. Other features include an HD LCD screen, custom standby settings, automatic focus switch, backlight control, and wireless IDs
  • 【Compatible with Sony Cameras】 Compatible with Sony A9 II A9 A7R V A7R IV A7 IV A7R III A7S III A7 III A7S II A7R II A7 II A7S A7 A7C A1 A6600 A6500 A6400 A6100 A6000 A99 A350 cameras. Powered by 2x 2500mAh NiMH batteries (sold separately), the speedlite ensures 210 full power flashes for outdoor shooting
Bestseller No. 4
Godox V850II V850 Flash for Sony Canon Nikon Pentax Fuji Olympus Panasonic GN60 2.4G 1/8000s HSS 650 Full-Power Flashes 2000mAh Li-ion Battery 1.5s Recycle Time Camera Speedlight Speedlite (NO TTL)
  • [Application] With Master and Slave, Off wireless flash system, Godox V850II Speedlight fits all DSLR camera brands e.g. compatible for Canon, Nikon, Pentax, Fuji, Olympus, Panasonic Cameras and etc
  • [Build-in 2.4G Wireless X System] Build-in 2.4G wireless transmission offers all-in-one functions and 100 meters further transmission distance. Compatible with XPro / X1T / X2T series transmitters, also can be used as a Slave/master flash to control other flashes
  • [Powerful Battery] Max. 1.5s recycle time and 650 full power pops. 2000mAh lithium battery ensures better shooting performance. Less bulky, less heavy, no hassle but more convenient
  • [Adcanced Functions] GN60, 22 steps of power output(1/1-1/128). Supports M/Multi/S1/S2 modes, 20-200mm auto/manual zooming. Godox V850II High-Speed Speedlite can achieve 1/8000s high-speed sync functions when used in combination with high-speed triggers. (NOTE: High-speed sync trigger mode is not available when the V850II is mounted on the camera)
  • [Others] Equipped with a wireless control port and a 3.5mm sync cord jack, V850II Speedlite has multiple triggering methods. The Godox V850II is the standard hot shoe flash, there is NO TTL function
Bestseller No. 7
Easy Hood 1.6ft TTL Off-Camera Flash Speedlite Sync Cord for Sony A7R IV A7II A7III A7RII A7RIII A7SII A7 A7R A7S A6600 A6100 A6500 A6400 A6300 Camera with Multi Interface MI Shoe
  • ★HIGHLIGHTS - Features a flash connector and a camera connector at the ends, allows the flash to be removed from the camera's hot shoe for creative unique and dramatic lighting, reduces the harsh shadows commonly encountered with direct on-camera flashes.
  • ★SHOE MOUNT WITH 1/4"-20 SOCKET - Features a built-in 1/4"-20 tripod socket at the other end where the Speedlite unit is attached to which permits to be locked onto a tripod or flash shoe mount, frees your hand from holding the off-camera flash.
  • ★CAMERA COMPATIBILITY - Compatible with Sony Camera with Multi Interface Shoe, such as Sony Alpha 7R IV, 7RIV, α7R IV, A9, A7, A7R, A7S, A7SII, A7SIII, A7II, A7III, A7RII, A7RIII, A7RMII, A7RM2, A7RM3, A6600, A6500, A6400, A6300, A6100, A6000, A99 II, A977 II, RX10 IV, RX10 III, RX1R II and more.
  • ★SPEEDLITE COMPATIBILITY - Compatible with speedlites with Sony Multi Interface MI Shoe, such as Sony HVLF32M, HVLF60M, HVLF43M, HVL-F45RM Flashes. PLEASE NOTE: Does not fit other brand flashes.
  • ★SAFETY & FLEXIBLE LENGTH - Feature a locking knob on the two ends to ensure your equipment is secure. Uncoiled lenght: 50cm/1.6ft, coiled length: 11cm/4.3inch.
Bestseller No. 8
JJC 3-in-1 Wireless Flash Trigger & Shutter Remote Control with Two Receivers Kit for Sony A6600 A6500 A6400 A6300 A6100 A7M4 A7 IV A7III II A7R5 A7R V A7R III II A7S III II A9 II A99 II
  • Package Includes: Wireless Camera Flash Trigger & Remote Control Kit (1 Transmitter, 2 Receivers), shutter cable for Sony multi connector, studio light cable x2pcs, 3.5mm-6.3mm adapter x2pcs, 23A battery x1pc, AAA battery x4pcs.
  • 16 Channels, operation range up to 100 feet (30m), max sync speed of 1/250s, 433MHz frequency.
  • Use as an individual or group wireless flash trigger, and/or as a shutter release remote trigger.
  • The wireless flash trigger is compatible with all flashes with STANDARD HOT SHOE, such as Canon 580EX II, 580EX, 540EZ, 520EZ, 430EX II, 430EX, 430EZ, 420EX ,420EZ, 380EX, Nikon SB-900, SB-800, SB-600, SB-28, SB-27, SB-26, SB-25, SB-24, SB-700, etc
  • Since the flash trigger kit does not transmit TTL settings, use of a flash or light unit with full manual control is recommended.
Bestseller No. 9
Ulanzi LM20 Camera Flash, Camera Speedlite with GN12 / CCT 5600K for Canon/Fuji/Sony/Nikon/Panasonic Olympus Pentax and Other SLR Digital Cameras, and Digital Cameras with Single Contact Hot Shoe
  • 【Standard Hot Shoe Mount】LM20 mini Flash Speedlite is compatible with mainstream camera brands including Canon Sony Nikon Panasonic Olympus Pentax, Digital Camera Speedlight.
  • 【Reliable Exposure】High-speed flash to make your picture shine even in dim environment. This speedlite has a GN of 12, a High Speed Sync of 1/250s, and a CCT of 5600K. (*It is recommended to use this speedlite within 4m)
  • 【Keep Every Moment Stunning】 1-7s recycling time makes continuous flash shooting possible. The lower the flash brightness, the less it takes to recycle back to full power.
  • 【User-friendly Display】 Ulanzi LM20 comes with a display and multi-functional buttons for easy operation, even if you are a novice, you can use it quickly
  • 【Auto & Manual Modes】Comes with 2 uss mode, In Auto mode, the speedlite adjusts its output through a sensor itself; in Manual mode, you can adjust the dimming.
SaleBestseller No. 10
Godox Lux Junior Retro Camera Flash, GN12 6000K±200K CCT,Auto & Manual Modes 1/1-1/64 Flash Power, S1/S2 Optical Control for Fuji, for Canon, for Nikon, for Sony, for Olympus Camera
  • 【Retro In Style】With a vintage style speak for itself, the Lux Junior can be part of your everyday outfit. When you take pictures on the street, there is no longer the embarrassment of using a giant flash on you camera.
  • 【Professional Flash】 Color Temperature 6000K±200K; 28mm Focal length(fixed value), 1/1-1/64 Flash Power; Compatible With Fujifilm/Canon/ Nikon/Olympus/Sony hot shoe cameras,for digital camera film camera.It also can be used with Godox Flash Trigger.
  • 【Lightweight & Compact】the Lux Junior only size of 2.9*2.8*2 inches and 130g net weight, powered by two AAA batteries (which are not included). Lux Junior is a flash you are eager to take out wherever you go.
  • 【As an entry-level flash】Its simple operation and small size allows you'd take out wherever you go, capture the impromptu moments you will never want to miss.
  • 【Retro Camera Flash】Lux Junior adopts a single-contact design and is compatible with most brands digital and film cameras such as compatible with Canon Nikon Sony Fuji Olympus cameras.

Bottom Line about A6400 Flash

When you purchase a6400 flash, it’s important to consider whether or not the item will actually serve its purpose. Sometimes we may think that an acquisition is necessary when really there are other options available at a lower cost, which would suffice just as well with no loss in value–reviewing these alternatives beforehand can help avoid wasting money on unnecessary purchases later down the line. 

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