[79245] Yongnuo YN660 Manual Flash/Speedlight 2.4GHz - GN66 (non-TTL)

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The new professional Yongnuo YN660 speedlite is a very powerful and well built manual flash that can be used both on or off-camera. It features plenty of light output (GN66) and a wide zoom range (24mm~200mm). Additionally, it can be used with an external battery pack (sold separately) to quicken the recycle time to about 1.5 seconds on full power. The YN660 has a built-in radio receiver that it directly compatible with Yongnuo's RF-602, RF-603, RF-605 and YN560-TX flash trigger systems -- All of which makes it a very attractive buy for serious flash work and professional strobists. 

Guide Number: 60 (200mm/ISO100) Manual, S1, S2 Modes (No TTL) Not High-Speed Sync
Recycle Time: 0.1~2.8s Power Range: 1/1 ~ 1/128th Built-in Yonguo 2.4GHz System
Zoom Range: 24~200mm Uses 4 x AA Batteries

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Flash Main Features:

    • Manual flash (no TTL) 
    • Plenty of light output: Guide Number: GN66(ISO100/200mm)
    • Wide zoom range: 24~200mm
    • Wide power range: 29 Levels (1/1~1/128th in full or 1/3rd stop increments)
    • Built-in radio receiver (compatible with Yongnuo RF-602, RF-603-II, RF-605 and YN560-TX systems)
    • Built-in MASTER transmitter (can trigger & control additional flashes)
    • Improved menu-dial and ergonomics
    • External battery pack input
    • Quick recycle time (3 seconds on full power & fresh batteries) 
    • Overheat protection
    • Optical Slave Mode (S1 – Flash; S2 – Pre-flash cancellation)
    • Lever-locking foot

Flash Technology:

    • Manual Powered Flash

The YN660 is completely manual flash. This means there are no TTL or automatic features included whatsoever. The flash output and zoom of the YN660 needs to be adjusted on the unit itself or via a Yongnuo YN560-TX flash controller (sold separately). By getting rid of the automatic features, the YN660 has a heavily reduced price in comparison to it TTL cousins. This leaves you with some extra cash to spend on other lighting accessories such as sofboxes, stands, brackets and umbrellas etc. A manual flash is perfect to use on static subjects: models, products, food, families, newborns etc. However, with moving objects you'd need to readjust the power everytime the subject moves away or closer to the flash. 

    • High Flash Output and Wide Power Range: 

This flash features plenty of power and a wide range or power levels to choose from. Boasting an incredible guide number of GN66, the YN660 can be used outdoors in broad daylight or in studio with large modifiers (softboxes, octoboxes, umbrellas etc.). This flash also has many levels of intensity (22 levels) which will allow you to fine-tune the exact amount of flash output you need. The power can be adjusted in full stops (double or half the amount of power) or in 1/3rd stops.  

    • Recycle Time and Overheat Protection:

A flash's recycle time is the amount of time a flash needs to recharge its power. When a flash is set on a higher intensity the recycle time will be a bit slower. To reduce a flash's recycle time, simply set it on a lower flash intensity or use an external battery pack. Also, when the batteries start to die out the recycle time will be slowed down quite considerably. Old batteries tend to have a big effect on a flash's recycle time too. 

This flash has a fast recycle time of about 3 seconds on full power (using a fresh set of batteries). You can shorten the recycle time to about 1.5 (full power) by using an external battery pack such as the Canon CP-E4 Battery Pack or JJC FB-1 Battery Pack. When this flash is set to its lowest setting (1/125th) the recycle time is a near-instantaneous 0.2 seconds.

There is a risk of the flash overheating when its triggered rapid succession on full power. Luckily Yongnuo flashes feature a couple of ways to reduce the risk of overheating your speedlite. Firstly, the Yongnuo flash will automatically slow down the recycle time to about 7-10 seconds when the flash gets too hot. If the flash is still overheating it will automatically shut down thanks to its thermal cut-off switch. If this happens, change the batteries and give the flash about 10-15 minutes to cool down. 

    • Wireless Connectivity and Control:

This flash has multiple ways of being used off-camera. It can be triggered with the use of radio controlled triggers, a PC sync cable or by using one of its SLAVE modes. The YN660 features a built-in radio receiver which is directly compatible with Yongnuo's RF-602, RF-603, RF605 and YN560-TX flash systems (see how this works).

The YN660 can be used with most types of radio-controlled flash triggers, but it works best Yongnuo's own systems -- especially in conjuction with the YN560-TX flash controller (sold separately). The YN560-TX is a wireless flash trigger that can also be used to wirelessly adjust the power and zoom settings of the YN660. Save 15% when you buy the flash and trigger together

A nifty new feature of the YN660 is that it includes its own built-in 2.4GHz MASTER transmitter. This means with the YN660 on your camera you can trigger additional & control YN560-III or YN660 speedlites off-camera. With the the YN660 you can control multiple speedlites in 6 Groups (A to F) and can even wirelessly adjuste the power & zoom of each flash group.  

The YN660 also features an optical slave mode (S1 & S2 modes). In this mode the flash can be triggered using another flash. When set to S1 mode, the YN660 will use its sensor to detect flash pulses coming from other speedlites or on-camera flashes. In other words, when the YN660 "sees" another flash firing it will simultaneously trigger itself too. This flash can also be used with any type of triggering device that implements PC (prontor compur) sync connectivity. On the side of the flash is a PC sync connector that uses a screw-in thread. A rubber-flap is used to protect the connector when not it use. 

    • Flash Zoom

A flash with zooming capabilities will allows you to spread or concentrate the amount of light. This is a very useful flash feature in regards to the size of the light you want to create. This flash has selectable zoom settings that range from 24mm to 200mm. At 24mm, the light will have a very widespread and even effect. At 200mm, the light will have a very concentrated, contrasty and long-reaching effect. With the use of the wide-angle diffuser, the zoom of the flash will have an even wider dispersion of light. 

Tecs & Specs

Specifications of Yongnuo YN660: Please note: N/A = Not Available
Flash Modes  
Manual Yes
Multi (Strobostic) Yes (Selectable Number of Flashes and Frequency (Hz))
Wireless Modes  
TTL Master N/A
TTL Optical Slave N/A
Built-in Radio Receiver Yes - Yongnuo RF-602, RF-603 & YN-560TX 
Built-in Radio Transmitter Yes, 6 Groups, 16 Channels
Manual Optical Slave Yes (S1 – Manual Optical / S2 – Pre-Flash Cancellation)
Flash Output (Power)  
Guide Number 66 (ISO 100, 200mm)
Flash Controls 8 Levels (1/128th to 1/1) & 29 Levels Fine-Tuning
Flash Adjustments Full Stops, 1/2th Stops or 1/3rd Stops
Auto Zoom N/A
Zoom Range 24, 28, 35, 50, 70, 80, 105 & 200mm (18mm with wide-angle diffuser) 
Type AA Batteries x 4
External Battery Pack Socket Yes
Recycle Time 3 seconds (on full power) ; 1.2 seconds (with battery pack)
Longevity +/- 150 ~ 1,500 flashes (depends on flash output and battery type)
Head Rotation  
Horizontal Angles 0 ~ 270 degrees
Vertical Angles -7 ~ 90 degrees
High Speed Sync (HSS) N/A
Flash Exposure Compensation N/A
Flash Exposure Bracketing N/A
Flash Exposure Value N/A
Rear Curtain Sync N/A
Modelling Flash N/A
Auto Assist Beams N/A
Sound Prompts Yes
Overheat Warning Visual Warning, Thermal Cut-Off & Auto Recycle Slowdown
Custom Functions Yes
Colour Temperature 5,600K
Flash Sync  
Flash Speed 1/200s ~ 1/20,000s
External Interface PC Sync (Metal Screw-in)
Flash Add-Ons  
Bounce Card Yes
Wide-Angle Diffuser Yes
Build & Dimensions  
Dimensions 66×77×200mm
Net Weight 380g
Hot Shoe Type Metal ;  Slide-Lock Mechanism
Body Type Plastic
LCD Panel Yes
Backlight Yes (Blue)
Batteries Not Included
Charger Not Included
Pouch Included
Foot Stand Included
Manual Included


Please note: N/A = Not Available
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