The pentax af201 fg flashgun is a lightweight compact flashgun that weighs just 141g and is ideal for smaller bodies it has a dust proof wear resistant design with 18 seals applied in crucial parts of body making it perfect for outdoor shooting in harsh conditions with a guide number of 20 at iso 100m it has a flash range of 07m 80m and has a built in wide angle panel that slides out to cover angle of view of ultra wide lenses and flash head can be adjusted vertically to 10 differe