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How-to's Accessories Reviews

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.

 

Post a Speedlight Question

 

Let's assume we have these initial conditions:
Normal indoor ambient lighting, camera in A mode at f/3.5 and ISO 400.

 

The Nikon SB-910 flash unit

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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

Ribbon awarded for his generous support to the Fundraising Campaign 2014 Ribbon awarded for his generous support to the Fundraising Campaign 2015 Ribbon awarded for  his generous support to the Fundraising Campaign 2017 Ribbon awarded for his generous contribution to the 2019 Fundraising campaign

Thanks Russ, good reading as always.

G