Sequence of Events for TTL Flash
Russ MacDonald (Arkayem)
Keywords: nikon, speedlights, lighting, flash, ttl
Several Nikon shooters have asked the question about how the sequence of Nikon flash units fire off the flash. This is a short wrap-up on how it works.
We have many resources specific to Nikon flashes and suggest you have a look at the Speedlight index.
You have a question regarding your Speedlight flash unit? No problem - just ask in our Speedlight and Lighting forum.
Let's assume we have these initial conditions:
Normal indoor ambient lighting, camera in A mode at f/3.5 and ISO 400.
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3 comments
Norman Thompson (Normanthompson) on September 7, 2013
The article takes all the mystery surrounding this subject and delivers a simplified explanation. Thanks Russ
steve hill (smh) on August 4, 2013
Before reading this topic, courtesy of Russ, I was perpetually confused with the Nikon CLS system. Even tho I had read books and attended classes on it. For me, reading his articles was like enlightenment. Russ succinctly and clearly distilled the essence of CLS, turing my confusion into understanding. I had many "eureka" hot flashes. He turned spinach into ice cream. Many many thanks. One thing I noticed that wasn't spelled-out is that, on my D7100 / sb900 combination, at least, the BL function is inhibited when in spot metering mode. Maybe that is common knowledge and I'm still into discovery. Thanks, again, Russ. Job very well done.
Richard Luse (DaddySS) on July 22, 2013
Thanks Russ, good reading as always.