[0.05 lb] ...and have an M body. It’s heavier but the image quality is untouched. Had a Leica 35mm ASPH summicron and I did not like the image quality produced by that lens. I even considered selling the M body because the output was disappointing.

Got the Zeiss lens and my opinion was entirely turned around. The M body is fun to shoot now and the output I get is rewarding.

[0.5 oz / 14.2 g] Its hard to mention anything revelatory given how well reviewed this lens is, so apologies it you've heard it all before. It is an excellent lens, perhaps the sharpest one I own at present with a subtly different character from modern Leica offerings. While I do own a 35mm Summilux, from a rendering perspective any comparison would be silly, as my copy is a pre-ASPH version from 1969. So I can't comment on how much more or less the current Leica brings to the party. Back on the Zeiss, I find there really are only 2 negatives and a few nits. For an M-mount optic, the lens is large and heavy. The other knock is noticeable vignetting when shooting wide open. Finder blockage is minimal and while others find it a boon, I'm not all that fond of the 1/3 of stop aperture clicks. My objection is that it substantially increases the amount of twist necessary to effect a change of a couple of stops over Leica's half stop system. Really speed vs control. The plus list is a bit longer. Subjectively sharpness, color rendition, bokeh, micro contrast are all wonderful. The blend of these characteristics borders on magical. All the detail without any harshness. When used with the M10 the result can be quite sublime and smooth enough to feel more analog than digital. The focus ring is wonderfully smooth, neither too quick nor too long in throw. Just right to be easily focused when wide open. Build quality and feel is impressive, easily up to the standard of comparably price Leica offerings. If you are well off enough to be considering an FLE, I'd suggest you might consider buying this and a nice used early Summilux instead. The Zeiss will satisfy your desire for a more modern rendering while the Summilux can compliment it with that special Leica glow. The early Summilux is tiny, sharp as a tack when stopped down and offers a completely different look when wide open. Pair them and you can go small, large, old, new, sharp, dreamy for around a grand less the the latest Summilux.

[0.5 oz / 14.2 g] using this on film Leica and fuji xpro2 . the lens renders images beautifully with a very smooth bokeh and great subject isolation. The microcontrast is like a classic zeiss optic. Highly recommended ; new lens is a fraction of a cost of even a used summilux 35.

[0.5 oz / 14.2 g] Fantastic lens for all around use. Razor sharp with wonderful bokeh.

[0.5 oz / 14.2 g] I've used this lens for about a month shooting up and down the coast of central California. This lens is extraordinary. It is highly resolving and sharp with zero vignetting, even at f1.4. Shot wide open the lens has a gorgeous band of sharpness and bokeh galore. Shot at f5.6, it's incredibly sharp throughout the range. The construction was stellar. The click stops on the aperture ring click positively into place and the focus is buttery smooth. I wasn't expecting it to be this good to be honest with you. It's as good as, or dare I say, even better than my Leica lenses.