Method

Setup

Camera, light position, and both subjects are fixed to marks on the table. For every frame, the modifier's front face is placed at the same distance from the subject (measured, not eyeballed). The shutter speed, aperture, and ISO are also fixed; flash power is adjusted so the lit area on the subject exposes the same. Ambient is killed — the no-flash frame proves it. The only processing is whitebalancing done with a netreul grea card. I am eyeballing the power and doing nothing post processing to balance it so there is some variation but I keep it as close as possible.

Gear

Measurements

"Distance" is the distance from the modifier's front face to the dot on the table I center the subject on, not the flash head itself. "Power" is the fractional output on the speedlight;

Log

Click a column header to sort.

Modifier Subject ISO Power Distance Notes
Bulb apples 64 1/2 46"
Bulb glass 64 1/2 46" Used the bulb head instead of the fresnel.
Double Grid apples 64 1/4 46"
Double Grid glass 64 1/4 46"
Grid apples 64 1/8 46"
Grid glass 64 1/8 46"
Speedlight apples 64 1/16 46"
Speedlight glass 64 1/16 46" Reference frame. All other shots are compared against this.