I set my Shutter Speed under Custom>Flash/Bracket>Shutter Speed (not Synch Speed) to 1/30 sec and the picture log says the photo was taken at 1/60/. I then set that same Menu to 1/15 sec, and got the 1/60 result again.
What am I doing wrong? Camera is in Rear Shutter and iTTL mode. Flash in an SB 800 in the shoe.
When you set the Shutter Speed, you are setting the lowest shutter speed that you will allow the camera to go to when using flash. If the ambient light is bright enough, the camera will select shutter speeds from that setting, e.g. 1/30th, all the way up to the highest sync speed to obtain correct ambient exposure. If you want to shoot at one selected shutter speed, choose manual exposure.
I got my answer reading The Hotshoe Diaries by Joe McNally. I spent 2 hours reading since no responses came in here to the forum.
They key is which Mode the camera is in. I was in S mode. It makes sense since I wanted to select the Shutter Speed myself. The problem arises with the camera's built-in programming.
With a flash -- built-in, remote or hot shoe -- the shutter is programmed to fire at 1/60 sec. No variation allowed. My inputs into the Custom>Bracket/Flash were being ignored. I could have pulled it off and captured the low ambient room light at a lower speed if only I'd switched to A or M Modes. I have no idea about the effect of P Mode.
Thanks RL. I printed out about 50-60 pages of that blog and have them in a 3-ring binder. That was going to come at a slightly later stage of my learning. And I've read most of Mike Hagen's CLS book published by RockyNook.
This minor idiosyncrasy in setting Flash shutter speeds wasn't mentioned. Perhaps in Darrell Young's Mastering the D7000 book. But Young deals with speedlights and built-in at the very end of his 400-page book, and by that time my head was awash with details. He might have mentioned it, but I don't recall.
It's an important detail. And I'll have to reread that section of the Hotshoe Diaries to see if he explains why the Nikon folks programmed in that parameter. Freezing 1/60 shutter speed for flash while in S Mode. There must be some justification. But shouldn't S Mode be where you can control the shutter? It just doesn't seem logical.
I'll report back here after I do some more reading.
>One of my "Go to" resources for understanding CLS is >from a Nikonian, Russell MacDonald. > >http://nikonclspracticalguide.blogspot.com/2008/01/nikon-flash-two-separate-metering.html > Wow! where has this gem been hiding. Thnx a million RLDubbya. I got so wrapped up in it I decided to print the whole blog. If you want to know anything about Speedlites this is the definitive place. Even altho I have the SB900 & Russ MacDonald talks mainly about the SB800 the information is so detailed & relevant I wish he would publish. If its ever updated to include the latest Speedlites he should.
Thanks for posting the link from Ross about flash and metering. I printed out about 70 pages of his advice, but it really warrants 3 or more readings to absorb.
The metering and the Mode (PASM), and Flash settings really call for some flexibility depending on the shooting job. Are you going for 'bear', or just a 'mouse'? It changes everything, and I think I'm ready to be selective about my settings.