#1. "RE: Looking for a speedlight..." In response to Reply # 0
San Pedro Garza García, MX
Yes, the SB-25 and the SB-26.
My old reliable SB-25 does allow for rear/normal sync with the F4 at the sliding of a switch on to flash. And also FP with my F100.
What one needs to do for FP with these two is: 1.- Mount the speedlight on the camera. 2.- Turn both the camera and the speedlight on. 3.- Slide the upper right switch on the SB-25 to M (should show on the LCD) 4.- Slide the upper left switch to Normal 5.- Confirm ISO speed and zoom head position according to lens (do not use a wide panel) 6.- Press M in the rear of the flash until a 1 or a 2 appear. 7.- Choose a speed from 1/250 to 1/4000 on the F100 8.- Set aperture for the lens, in the camera 9.- Focus on your subject/compose/confirm aperture 10.- Shoot! (Unless you are using a non-D lens; if this is the case, you will have to set the "aperture value" manually in the back LCD panel)