TTL metering and TTL flash – Speedlite flashes, studio strobes and flash triggers with TTL mode

In photography, TTL (through-the-lens) metering is a feature of cameras whereby light levels are measured through the lens that captures the picture, as opposed to a separate metering window. This information can then be used to set the correct exposure, and control the amount of light emitted by a flash connected to the camera. TTL Flash Metering is the standard metering mode that your camera employs where you’re using the camera’s built-in pop-up flash. You can also use this metering mode with some of the dedicated flash units available for your camera. TTL flash metering measures the burst of flash output light reflecting back from the subject and takes its reading through the lens. TTL manipulates the flash exposure with a dedicated sensor that measures the flash output reflected from the surface of the image sensor during active exposure.

TTL flashes and triggers are usually much easier to use than manual ones, especially for beginners. If you are using TTL speedlites like Yongnuo YN600EX-RT II or YN685, Pixel X800C, Shanny SN600N or any other TTL speedlite flash then you can simply take photos in camera auto mode, the camera and speedlite will choose the correct settings. If you prefer to shoot in manual mode, then everything you need is to set ISO, aperture and shutter speed, and speedlite flash will calculate the amount of light needed for the correct exposure. If you are using manual speedlite then you will have to set flash power also, which requires a little practice and experience.

TTL flashes and triggers have another big advantage over manual ones and that is AF assist lamp. Built in AF Assist lamp helps camera to focus in low light situations. Manual flashes do not have auto focus assist lamp so please take that in mind when choosing the flash for your needs. In our opinion, manual flashes like Yongnuo YN560 IV or Yongnuo YN660 are great, but we prefer to use them off-camera for 2nd or 3rd light, not for the on-camera flash.

When it comes to radio triggers then most higher-end triggers support ttl metering. These triggers will give you much more versatility than any other non-TTL triggers. Manual triggers do not allow you to remote control your flash from Camera like TTL triggers do. Imagine putting a flash speedlite into a softbox and adjusting it from your camera directly. Either you choose Yongnuo YN622 triggers, Godox X1 triggers, Pixel King pro triggers you can not go wrong. All of these systems support TTL, HSS, remote control and all other important features.

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$123.99

Yongnuo YN14EX II TTL Macro Ring Flash Kit for Canon

Yongnuo YN14EX II TTL Macro Ring Flash Kit for Canon allows you to evenly illuminate close subjects with soft, flattering light. YN-14EX II is a great alternative to much more expensive Canon MR-14EX II macro ring flash. YN14EX II is very powerful macro ring light and it recycles in approximately 3 seconds at full power.

$169.99

Yongnuo YN680EX-RT Lithium Wireless High-Speed TTL Speedlite

Yongnuo YN680EX-RT Lithium Wireless High-Speed TTL Speedlite utilizes a rechargeable lithium-ion battery pack, to provide a super quick recharge time of just 1.5 seconds at full power. The flash is Canon RT compatible and features TTL, HSS and high guide number of 60m

$84.99

Yongnuo YN320EX S TTL Flash for Sony Cameras

Yongnuo YN320EX S TTL Flash is an excellent compact size flash unit that provides TTL, HSS and has a radio receiver built-in. It is a perfect on-camera flash for any camera system and especially mirrorless system

$158.99

Godox V350F

Godox V350F is a compact speedlite with advanced functions including TTL, high-speed sync, a built-in 2.4 GHz radio system, and a rechargeable lithium-ion battery capable of 500 full power flashes. V350F is a perfect on-camera flash for any photographer who prefer smaller yet powerful flash

$158.99

Godox V350O

Godox V350O is a compact speedlite with advanced functions including TTL, high-speed sync, a built-in 2.4 GHz radio system, and a rechargeable lithium-ion battery capable of 500 full power flashes. V350O is a perfect on-camera flash for any photographer who prefer smaller yet powerful flash

$158.99

Godox V350S

Godox V350S is a compact speedlite with advanced functions including TTL, high-speed sync, a built-in 2.4 GHz radio system, and a rechargeable lithium-ion battery capable of 500 full power flashes. V350S is a perfect on-camera flash for any photographer who prefer smaller yet powerful flash

$158.99

Godox V350N

Godox V350N is a compact speedlite with advanced functions including TTL, high-speed sync, a built-in 2.4 GHz radio system, and a rechargeable lithium-ion battery capable of 500 full power flashes. V350N is a perfect on-camera flash for any photographer who prefer smaller yet powerful flash

$64.99

Yongnuo YN560-TX PRO Flash Controller for Canon

Yongnuo YN560-TX PRO Flash Controller for Canon is the new generation of flash triggers from Yongnuo which starts a completely new radio system that integrates the YN560-TX and YN-622 Radio Systems into one cohesive system

$64.99

Yongnuo YN560-TX PRO Flash Controller for Nikon

Yongnuo YN560-TX PRO Flash Controller for Nikon is the new generation of flash triggers from Yongnuo which starts a completely new radio system that integrates the YN560-TX and YN-622 Radio Systems into one cohesive system

$158.99

Godox V350C

Godox V350C is a compact speedlite with advanced functions including TTL, high-speed sync, a built-in 2.4 GHz radio system, and a rechargeable lithium-ion battery capable of 500 full power flashes. V350C is a perfect on-camera flash for any photographer who prefer smaller yet powerful flash

$89.99

Yongnuo YN585EX Speedlite for Pentax Cameras

Yongnuo YN585EX Speedlite for Pentax Cameras offers full P-TTL support, including rear curtain sync and red eye reduction. YN585EX offers a powerful guide number of 58m at ISO 100 and 105mm as well as a zoom head with coverage for lenses of 20-105mm. Also, it has a wide-angle diffusion panel that expands the beam to work with 14mm lenses. Along with these capabilities, the YN585EX can tilt from -7 to 90° and can rotate both left and right 180°.

$97.99

Yongnuo YN568EX III Speedlite for Nikon Cameras

Yongnuo YN568EX III Speedlite for Nikon Cameras is a great choice for both professional or advanced amateur Nikon shooters. It is features rich, supporting i-TTL, HSS, 2nd curtain sync, wireless master and optical slave modes, auto and manual zoom, flash exposure compensation, flash exposure bracketing and much more.