4x5 speed graphic shutter mounted on 8x10 camera

sorry for the poor composition in the last scene. This is a pacemaker speed graphic that’s been turned into a 1/30-1/1000 shutter for an 8x10 large format camera. I use this to shoot outdoors wide open and with sufficient light indoors. Lens is a 19“ B&L Sigmar softish portrait lens. Camera is an 8x10 Burke & James Rembrandt 1.