What tuning is capo on 1st fret?
Let's say you place a capo on the first fret of this same guitar. You've essentially moved the nut one fret closer to the bridge and raised the pitch of each string by a half step. so your guitar is in essence tuned to F A# D# G# C F (Figure 2).
Is a capo on the first fret a half step down?
Place the capo on the first fret.
You'll tune the guitar into standard tuning, which is a half step lower than the first fret. Then when you remove the capo, you'll be tuned a half step lower.