The Joe McNally 4 in 1 Umbrella is the largest ?mid-sized? umbrella available, 140cm (55?) open. It features four different lighting options (silver bounce, white bounce, translucent shoot through and translucent shoot through with square mask. The Joe McNally 4 in 1 Umbrella offers un-rivalled versatility and could be the only umbrella you will ever need. Large enough to light a full length portrait, the 4 in 1 also offers the photographer the options to create ?softbox? type catch-lights in the eyes with the translucent shoot through with mask. The different combinations are as follows: White Bounce Silver Bounce Shoot Through Shoot through with square mask The 4:1 can be used with studio flash and battery operated flashguns.