Guide Number for Godox - Flashpoint unit

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JOrtiz Regular Member • Posts: 173
Guide Number for Godox - Flashpoint unit

I am very, very confused when it comes to compare the output of flash units.

I believe the Godox TT600 unit is a very powerful unit. When I compare its Guide Number with some other bigger unit I do not see the enormous difference as pointed on some threads.

i.e.:

Godox TT600 GN is 196.85' at ISO 100 while

Godox AD200Pro is 170.6 at ISO 100  - Here, TT600 seems to be more powerful than AD200Pro .  .  .  on paper.

Godox AD400Pro Witstro GN is 236.22 at ISO 100

Godox AD600BM GN is 285' at ISO 100

While AD600BM shows a larger GN, AD200 shows to be less potent than TT600 and AD400 is not too far.

Why people way that three TT600 will roughly give the power or an AD200?

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