Just for fun, 5 minutes playing with the crescent moon and shutter speed vs. film speed (ISO) settings. All at f/1.4
1/40 ISO 3200
1/30 ISO 3200
1/50 ISO 3200
1/50 ISO 1600
1/50 ISO 1000
1/50 ISO 800
1/40 ISO 500
Just for fun, 5 minutes playing with the crescent moon and shutter speed vs. film speed (ISO) settings. All at f/1.4
1/40 ISO 3200
1/30 ISO 3200
1/50 ISO 3200
1/50 ISO 1600
1/50 ISO 1000
1/50 ISO 800
1/40 ISO 500