S2IS flash adjustments

Hi! I have a question about the S2IS flash adjustment, it has the auto adjust which actually is manual adjustment in 1/3 EV steps and manual which is three steps flash power adjustment.
In manual shooting mode only the manual three stage adjustment is available. So what does the automatic 1/3 EV step actually change if not the flash power? Hopefully someone understands what I mean.

Mazu wrote in post #2477503
Hi! I have a question about the S2IS flash adjustment, it has the auto adjust which actually is manual adjustment in 1/3 EV steps and manual which is three steps flash power adjustment. So what does the automatic 1/3 EV step actually change if not the flash power?

Not the same. In auto flash energy is adjusted from "ideal" in 1/3 EV steps, the camera will evaluate ideal for each individual shot and then adjust the power of the flash by the requested amount (if possible).

Mazu wrote in post #2477503
In manual shooting mode only the manual three stage adjustment is available.

In manual flash setting you only have 3 levels low-medium-high, it is up to you to adjust aperture and or ISO to get the exposure you want with one of these fixed energy levels.

Mazu wrote in post #2477503
Hopefully someone understands what I mean.

I hope I did?

Thanks for the reply, you did answer my question. It seems both modes have their advantages, I wish the M shooting mode had both available but can´t have everything I guess.