No, actually the Summitar is a pretty bad lens IMO, and mine is perfect. Even a Industar 61 can do better and one year ago I posted some pics on another board (rangefinder forum) just writing I used my Leica IIIb and the Leicisti immediately asked me which lens I used because it had more definition than a standard Summitar..they thought it was a collapsible Summicron I.
This is one of the pics of that film:
Film is BW400CN.
I don't have a scanned pic taken with the Summitar with me at the moment, but it's a classic low def low contrast vintage lens, the 'cron is light years better.
This is taken with the M3 and Neopan, sunny 16 rule:
Metered with the M5, same film:
Metered with the M5, in colour (Ektar 100):
Not the most flare resistant lens, but it's a 1960 lens: