It has been suggested that I use SB-600 focus assist with D7000, and that the only way to suppress the flash for the actual shot is to program the function button to FLASH OFF.
Q1: is it in fact necesary to set the fn button to FLASH OFF to defeat the flash for the actual exposure, when the SB-600 is set to focus assist mode (and, obviously to depress it when capturing the image)?
Q2: If the answer to Q1 = YES, if I depress the fn button (set to FLASH OFF) when acquiring focus, will this defeat the focus assist flaah?
Q3: Do any other custom (or other) settings specifically affect this procedure? In particular, is the built-in flash automatically disabled because the SB-600 is mounted & ON?
There is no "flash off" button. There is a flash value lock (FV Lock) button. It doesn't turn the flash off; it fires a preflash to calculate the flash exposure level before the shutter is released and to lock it at that level until you press the button again.
If the SB600 is in the shoe and turned on, it will flash when you press the shutter release. The only way to prevent that is to turn the flash off.
Yes the built in flash is disabled if the SB600 is mounted and turned on.
I don't believe there is any way to use the focus assist without triggering the flash when the shutter is released.
So, if I set the D7000 mode dial to NO FLASH, will that defeat the focus assist flash on the SB-600? If it does not defeat the focus assit flash, that would be easier than holding the fn button in to avoid the capture flash while using focus assist flash.
If, you Pete says, holding in the fn button (as set to FLASH OFF) does not defeat the focus assist flash, I wonder if taping a little padding over it would susccessfully hold it in. Otherwise, i just need to get used to constantly holding it in. I expect that both would be easier than triyng to locate the fn button while going from focussing to acquirirng.
>Q1: is it in fact necesary to set the fn button to FLASH OFF >to defeat the flash for the actual exposure, when the SB-600 >is set to focus assist mode (and, obviously to depress it when >capturing the image)?
Other than setting the Mode Dial to no flash it appears the only other way to use the focus assit on the SB unit while suppressing the flash.
> >Q2: If the answer to Q1 = YES, if I depress the fn button >(set to FLASH OFF) when acquiring focus, will this defeat the >focus assist flaah?
It didn't on my D7000 and SB800 combo.
> >Q3: Do any other custom (or other) settings specifically >affect this procedure? In particular, is the built-in flash >automatically disabled because the SB-600 is mounted & >ON?
If you have the AF set to AF-C, it will inhibit the AF assit. And yes when the SB600 is mounted and on, it will disable the built in flash as far as I know.