SB-900 vs. White Lightning X2400 comparison

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The BAT Cave

Huh? What?

SB-900 vs. White Lightning X2400 comparison

Test shot with no flash showing minimal contribution from ambient light. 1/250s f16 ISO 100.

Nikon SB-900 1/128 power. 1/250s f16 ISO 100.

Nikon SB-900 1/64 power. 1/250s f16 ISO 100.

Nikon SB-900 1/32 power. 1/250s f16 ISO 100.

Nikon SB-900 1/16 power. 1/250s f16 ISO 100.

Nikon SB-900 1/8 power. 1/250s f16 ISO 100.

Nikon SB-900 1/4 power. 1/250s f16 ISO 100.

Nikon SB-900 1/2 power. 1/250s f16 ISO 100.

Nikon SB-900 1/1 power. 1/250s f16 ISO 100.

White Lightning X2400 1/128 power (1/4 mode, stop setting 0). 1/250s f16 ISO 100.

White Lightning X2400 1/64 power (1/4 mode, stop setting 1). 1/250s f16 ISO 100.

White Lightning X2400 1/32 power (1/4 mode, stop setting 2). 1/250s f16 ISO 100.

White Lightning X2400 1/16 power (1/4 mode, stop setting 3). 1/250s f16 ISO 100.

White Lightning X2400 1/8 power (1/4 mode, stop setting 4). 1/250s f16 ISO 100.

White Lightning X2400 1/4 power (1/4 mode, stop setting 5). 1/250s f16 ISO 100.

White Lightning X2400 1/2 power (Full power mode, stop setting 4). 1/250s f16 ISO 100.

White Lightning X2400 1/1 power (Full power mode, stop setting 5). 1/250s f16 ISO 100.

For this test, my Nikon D7000 was on a tripod a few inches to the left of the White Lightning strobe on a light stand. I used the basic 7-inch reflector on the X2400, no modifiers on the SB-900, which was set at 35mm zoom. Both the camera (with SB-900 mounted on top) and the strobe were exactly 10 feet from the wall being photographed. The same manual exposure of 1/250 second and f16 at ISO 100 was used for all shots. The SB-900 pointed away from the wall at 1/128 power was used to slave-trigger the X2400.

So, to my eye, the 1/8 power White Lightning X2400 image plus 1/3 of a stop is about as bright as the full power Nikon SB-900 flash image, making the X2400 about 7 times as powerful as the SB-900.