Up to 50
50 - 100
100 - 150
More than 150

Dedicated
Not Dedicated

With Bounce
Without Bounce

With TTL Metering
Without TTL Metering

Regular Flash
Ring Light
Underwater Strobe

Canon
Nikon
Sony
Olympus
Sigma
Metz
Panasonic
Pentax
Sunpak
Leica

Hot Shoe Mount
Handle Mount