Need help with flash basics

Cabled, wireless, studio - anything do with using flash
olgafox2002
Acolyte
Posts: 12
Joined: Thu May 17, 2012 1:04 am

Need help with flash basics

Unread postby olgafox2002 » Sun Jul 21, 2013 3:15 pm

1)In manual mode, the manual says:"when the shutter button pressed half way down, the distance at which the proper exposure is obtained appears on the LCD panel. Now what does the following mean? " Set the aperture to match the displayed distance to the shooting distance." To adjust what aperture? On the camera?
2) "The power level range eg. 1/1 -1/2 corresponds to the aperture range, f4-5.6" What does that mean?

harvey
Oligarch
Posts: 210
Joined: Wed Jun 25, 2008 2:25 pm
Location: Scotland

Re: Need help with flash basics

Unread postby harvey » Sun Jul 21, 2013 10:28 pm

If you know the power of your flash (expressed as a guide number), the ISO of the film/sensor and the flash to subject distance then you can calculate an aperture to use.

You can find one explanation here.


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