Thanks for your input.
I also feel that shots are not as sharp asthey should be. I used this lens extensively three years ago during a six week stay in Japan, and the resulting photos were very sharp. Maybe my technique in shooting from the hip resulted in camera shake. As for the contrast, I am not sure. I have gotten some great results with this lens. That day [in Amsterdam] was a sunny day and I was taking photos at noon time.
... and Krosya, I suspected that all people at the "District" would resent a photographer taking photos of anyone there.
The C-41 film was developed and scanned by a Fuji Frontier machine, and they usually do a good job. Could it be that the scanning process itself is the cause of not seeing sharpness?
Raid