SB-28 exposure compensation and EV

[bill holland]

Hi, all!

 

Does manually setting the EV value on an N90 affect the exposure

compensation of an attached SB-28? For example, if I'm shooting a

wedding with 400 speed color film, I'll often manually set the EV to

+1/3 to set the ISO to 320. Flash compensation is almost always set

to -1.

 

So does setting the EV value to something other than zero affect the

flash, especially when using TTL? As an aside, I manually change the

EV rather than DX number because the N90 indicates when the EV value

is something other than zero, whereas it doesn't tell you the DX is

something other than the film's stated rated speed unless you

explicitly look.

 

Thanks for your help!

[Jerry_]

If you are using the 'matrix' metering, any adjustments to the exposure compensation will 'confuse' the camera indoors (and out-of-doors, I guess.) Since the N90 has the large spot and matrix for choices, if you adjust the exposure compensation + .3 for the large spot, the camera will add the exposure. For indoors shooting, a minus setting on the flash may work OK on the close shots...but a large group of folks (at a wedding) may need more light, which is the reverse of what you are doing by going -1 on the flash compensation selection.

 

The SB-28 is made for out door fill flash: it is not a 'flash-bulb' although many use it as such. Your final results will be what is 'produced' by your lab in the prints.

[hal_bissinger]

Exposure comp affects both the ambient and flash exposures. (Shouldn't matter if you adjust it by dialing in comp or changing the ISO). Flash comp affects only the flash exposure. <p>

That's all you need to remember.

[fotografz]

Hal is right on. The camera controls ambient sensitivity, so a plus #

will capture more of the background scene at a wedding for example.

Meanwhile you can control the light on the foreground subject with the

flash compensation controls...which I might add are very easy to do on

Nikon SB flashes. I use this all the time at weddings to produce full lit

but natural looking scenes at reception halls with a Bride in the

foreground and action in the background instead of the usual wall of

black.<div></div>