For the LEICA man , this is LEICA's very best lens for travel and light weight, which is the whole point of the LEICA. This is also LEICA's newest real 90mm lens. (The newer SUMMARIT-M is a bargain lens with excellent optics, but sub-LEICA-standard mechanics.

Although too slow for hand held shots in real dim light, with my M9 either in my studio or outside even on cloudy days it's performance is excellent corner to corner. My 90 Apo might have a slight edge at f4.0 over the Macro wide open but only off a tripod.

This lens is small, very sharp and truly a macro.

I like it for its compact size and use it with the new #14652 macro adapter (live view). Nothing to complain about image quality so far. With f4, low-light use can be tricky, but, used for travel, compactness and low weight are usually more important to me than highest speed.

A macro lens it is not, as you are required to buy the macro ring to make it work, provided of course that you use liveview on the 240.What it is, is a slow 90 mm ( f 4) which is quite cumbersome to use unless you have a sturdy tripod, and even then the lens is not as sharp as the 75 cron.