The GIII/1.7 I had was only mediocre. I've heard folks say that it is amazingly sharp but I never experienced anything more amazing than snapshot quality. Maybe I should have looked for a 19 but dumped all interest in Canonet when I started using a RetinaIIIc. THAT camera is amazingly sharp!
I do agree. I've had several and found them to be below par. The Retina IIIC/c beats the ql17 hands down as does the Retina IIa..