Summary: Great lens, very sharp, small and beautiful. Handles great with tab for focussing. Build quality does not get any better. I have several leica lenses and they are all incredible. This one is new technology, but the 40 year old ones are spectacular as well.
Summary: This is true Leica product - compact, sharp and well built. 28 mm makes it compatible with the viewfinder lines on M9, compact size makes it perfect travel companion, and optical characteristics leave no upside potential for other comparable lenses. And 2.8 is more than enough for digital m9. Highly recommended if you look for a wide angle addition to your base 50 mm lens.
Summary: Do your research before buying your lens. The Leica R 28mm 4th version is known to be the final and best designed lens in this focal length pre aspherical. In my opinion the 4th version R28mm out performs the asph cousin.
Summary: Lens is well built but lacks the expensive feel of older Mandler optics. The physical length of the lens is a tad shorter than a 40mm Cron; very small. The rectangular hood arrangement is similar to current lenses and comes with a rectangular soft rubber cap. Viewing thruogh the finder the lens and hood cover the bottom 15% of the finder. Not a real issue.
Summary: i have been using it for less than 1 month, i shoot with an M8 . i use the 35/1.4 asph as well and used the 50/1.4 asph+ the 75/2.5. i like this tiny lense very much as it is sharp ,flare &distorsion free and is very light ( 180 gr) only, it does not block the viewfinder the only thing i miss sometimes is speed so whenever needed i switch to the 35/1.4 some people complain about its price-i think it is cheep compared to the benefits and quality of this lovely baby
Pros: light, sharp, flare free, distortion free ( even at 2.8)
Summary: It is a very compact lens with good ergonomics; though not as small as the 4th version 35mm F2.0 Summicron. I find it well-constructed, on par with all other Leica glass. It has a nice square lens hood, but an easily-detached square lens cap. For architectural and landscape photography, it would be quite useful. This is a good lens to get with an M8 body. I like to use this lens when I'm in close-quarters street situations.
Summary: This is a beautiful elegant lens capable of producing some of the most technically perfect images. It focuses easily and accurately every time with no perceptible distortion. It won't give you vision but it can give you inspiration. Ideal focal length for landscape and street photography, compact and light making it portable for any hiking trip.
Summary: I purchased this to give me a compact, 35mm-ish equivlent at a reasonable price, and I love it so far. With the camera, it makes for a great one-lens general shooting package. I wish it were faster, but I didn't want the extra weight & size of the F2.0 lens, and I can handhold with this easily at 1/15, so all is good in my world. Great images--good focus, contrast, and tonal range.
Summary: To those who feel this lens is expensive, yes I agree. I hesitated buying this Leica "starter" lens but let me tell you, the images you can get with this lens on an M8 are astounding in detail, depth, tonality and color. Amazing sharpness even at 2.8. I also bought a much more expensive 50 Lux ASPH but this little guy is my favorite on the M8.