Sekonic Studio Deluxe III L-398A viewing filter 4 lens is designed for

4 lens is designed for pre-AI Nikon F mount cameras- so it'll mount to those

bellows and cable release are sold separately

nothing else does what this flash does

too: not much larger than a normal 50mm lens

It accommodates either an extra EN-EL15 battery or 6 AA batteries with the included trays (the batteries are sold separately)

Sekonic Studio Deluxe III L-398A viewing filter 4 lens is designed forThe Sekonic Studio Deluxe III L 398A is a classic battery free light meter for reflected and incident light metering. In excellent condition, with only minor cosmetic wear. Includes dome and flat diffuser for incident light measurement, Lumigrid for reflected light, original case, and box.