Banjo Fmaj7 chord (Open G)F major seventh on the 5-string banjo: 3 2 1 2, and 3 more shapes

Frets, string 4 to string 1: 3 2 1 2 (first position)

1. String 4 (D): 3rd fret, little finger, F
2. String 3 (G): 2nd fret, middle finger, A
3. String 2 (B): 1st fret, index finger, C
4. String 1 (D): 2nd fret, ring finger, E
5. String 5, the short g: open, G, not in the chord

Sounds: F A C E  ·  Fmaj7 is F, A, C, E (1 · 3 · 5 · 7)

The 5th string: the short g adds the 9th over Fmaj7, a colour rather than a clash.

With a capo: on the 3rd fret it’s 0 2 2 4 (frets counted from the capo), an open Dmaj7 shape. Spike the 5th string at the 8th fret to keep it in tune with the capo.

Open G tuning: gDGBD, the short 5th string first, then strings 4 to 1.