When speaking of a flash, a TTL flash is one that can understand the signalling protocol used to perform TTL When talking about flash radio triggers, the TTL/manual feature distinction is similar.

TTL-FP: Focal Plane flash: permits flash photography with a shutter speed faster than the camera sync speed, which is typically 1/250 sec or 1/200 sec on Nikon DSLRs. In the * TTL-FP mode: the flash...

A TTL enabled flash fires a "pre-flash" before the actual shot is taken. The camera then measures the pre-flash with the ambient light level to calculate the power needed from the actual flash to make a...

Godox V860II-S TTL Li-ion Camera Flash for Sony dlvr.it/RRCKgQ pic.twitter.com/MuOBH5gIF8
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REF: RSC1657 PRO: Davis, Madelyn TTL: Botswana trip DAT: 1850 EXT: 1 cyanotype S&C: Note on reverse "I kiss you, Joseph"
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