@@suhelsafeda Sir yahan par 860 flash number le jaati hai because usme ek glass panel laga hua hai jo ki aapko 14 mm tak ki wide flash coverage deta hai. Anyway ek glass dome bhi aata hai just like half cut cricket ball usko V1 flash ke head par laga Dene se light aur jyada wide spread hogi but kitna wide experiment se hi pata lagega but us milky dome ki vajah se light ka output bhi kam ho jaata hai. Ad 200 pro with bulb flash side attachment can cover a verrrry wide area with white transparent umbrella I think so. I have three 860 flashes with canon mark 4 but these flash has a problem with on camera shooting these after few months misfire problem.This is never so with canon branded flashes. Your opinion in this regard? I think I should buy Ad 200 pro as it can fire at high shutter speeds.