One of the clean Summars will run rings around nearly any lens made, as long as it's at f4 or more. I actually have close up shots at f2 that were just fine. This lens gets a bad rap because many are in bad shape, but if you can find a clean one (not that hard) or get one CLA'd, they are astoundingly good, AND setting the aperture w/ a filter and hood on is easily done. Has it's own character too that screams "vintage Leica". W/ a decent hood they do not flare unless you shoot right into the sun.