Re: Pourquoi?

[Michel Carr�re-G�e]

Joseph Tainter a �crit :

So why does the PZ-1p think that the 1/2 stop between f2.0 and 2.8 is f2.5, while the *ist D thinks that this is f2.4?

Pourquoi pas ?
Real values aren:
f:2 = 2
f: 2.4/2.5 = 2.449
f:2.8 = 2.828

Michel