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How-to's

Speedlight Trick #1

Russ MacDonald (Arkayem)


Keywords: nikon, speedlights

One of the situations I run into regularly is that I am fairly far from a subject who is in a dim ambient setting, and there is something closer to me that will be affecting the flash metering. This could be a plant, a wall, another person, a wedding cake, or anything that can reflect the pre-flash pulses back to the camera.

For example, let’s say your subject is standing inside a dim room and you want to shoot a picture of her from outside the room through a doorway. If you simply set TTL on the SB-800 flash and place the subject in the center of the frame and shoot, the reflections from the doorway will make the system think your goal is to shoot the doorway and you will get a great shot of a slightly overexposed doorframe and the subject will be pitch dark. The doorframe will be slightly overexposed, because it is not in the center of the frame, but it will still cause the flash to reduce power drastically leaving the subject dark.

The trick is to first aim the head of the flash forward and remove any diffusers that don't push the little switch on the flash head (so distance information can be used by the flash). Then switch the flash to TTL-BL,  frame the shot and hit FV Lock.

 

20130819_085200_sb-800_distance-switch.jpg
SB-80 Distance Switch

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8 comments

Robert Kim Holwick (hillsidekim) on August 28, 2013

Richard Day (rdayas) take a look here. It will probably help. http://www.nikonians.org/reviews?alias=nikon-ttl-flash-metering-system

Patrick Galligan (pgalligan) on August 27, 2013

Thanks for another great flash article!

Richard Day (rdayas) on August 26, 2013

I hate to sound dumb but I don't see a TTL-BL setting on my SB800. What am I missing?

Robert Kim Holwick (hillsidekim) on August 25, 2013

Russ, I want to thank you for all the effort you have put forth, not only in this post, but in all the posts you have done that have helped me and countless others to better understand our flashes. The manuals for my current flashes are multiple times more difficult to understand than the manual on my first Nikon camera, the Nikon FA, which was a Nikon milestone. Again, many thanks for making all of this more understandable. My Nikonians membership again pays for itself. Thanks, Kim

William Richard Hollingsworth (hollingwD80) on August 23, 2013

Russ: The article is related to the SB0-800, but there is a similar switch on the 900, and 910. Will this work when using one of those as well? Thanks, Rich

Gerald Turk (turkgw) on August 21, 2013

Russ, you make my membership worthwhile. I have experienced this situation many times but never thought to switch to TTL-BL. Sometimes I have been able to set an SB-800 in a remote location but that often just doesn't work and it always takes a lot longer to set up. Thanks so much, Russ.

Ron Leifeste (ronp58leifeste) on August 21, 2013

Thank you Russ. First of all, due to laziness on my part, I didn't know the SB-800 HAD a distance switch. Great thing to know. and secondly I have run into this situation a few times and now I know how to handle them. I will make a list of steps to follow and check it twice when I am shooting. Thanks, Ron

Richard Luse (DaddySS) on August 20, 2013

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Thanks Russ. A little tough for me to follow, this is one you have to do and practice to get comfortable with how it works. I'll give it a try!

G