Her decisions also involve which of her Canon Mark IV cameras to shoot with.

WSJ: At the Belmont Stakes, Horse Photographer Barbara Livingston Will Be Ready | Creating

The Buhl Industries Mark IV Opus Opaque Overhead Projector.

FORBES: Talking Tech with Charlie Sheen

If I didn't have a Mark 4 (Canon EOS-1D Mark IV capable of shooting up to 10 frames per second, Ed) or some other really fast camera, I wouldn't have these pictures.

BBC: Tales from the frontline

Tenaya IV was a top quartile fund and Tenaya V is on track to meet that mark as well, Banahan said.

FORBES: Tenaya Capital Closes $372 Million For First Post-Lehman Fund