Panasonic is announcing a commercialization of new digital interchangeable lens LEICA DG SUMMILUX 15mm / F1.7 ASPH. complying Micro Four Thirds System standard.
The LEICA DG SUMMILUX 15mm / F1.7 ASPH. is an excellent 15mm single focal length lens of F1.7 clearing LEICA’s stringent standard. It also features sophisticated exterior that matches the stylish design of the world’s smallest LUMIX GM digital single lens mirrorless (DSLM) camera.
In addition to “LEICA DG SUMMILUX 25mm / F1.4 ASPH.” and “LEICA DG MACRO-ELMARIT 45mm / F2.8 ASPH. / MEGA O.I.S.” which are already released to the market, Panasonic has also announced product commercialization of LEICA DG NOCTICRON 42.5mm / F1.2 to enhance the lineup of LEICA digital interchangeable lens, attracting professional photographers worldwide.
In the meanwhile, Panasonic is further expanding the range of LUMIX G digital interchangeable lens with the development of new LUMIX G VARIO telephoto zoom lens of 35-100mm in stylish, compact design that also matches the LUMIX GM camera.
http://panasonic.net/avc/lumix/pressrelease/leica_dg_summilux_15/
Available at:
Shooting experience
https://www.dpreview.com/articles/6606804762/panasonic-leica-dg-15mm-f1-7-lens-impressions
And this one now search for suitable food in dump
https://www.dpreview.com/samples/2113848080/panasonic-leica-dg-summilux-15mm-f1-7-sample-gallery
Cat must eat belt now after purchasing such lens
https://www.flickr.com/photos/songmatin/sets/72157662316415424
In the case of lenses with very fast apertures, there is often a noticeable decrease in sharpness before f/2.8. Not so with the 15mm f/1.7. The lens is almost as sharp at the center at f/1.7 as it is at f/2.8, which in turn, is nearly as sharp as the sharpest aperture of f/4.
http://www.mirrorlessons.com/2015/11/16/panasonic-15mm-1-7-review/
I decided don't buy Olympus 17mm 1.8 (less sharp than Lumix 20 1.7, makes noise at focusing), but 15mm could be good especially for x2.3 crop of 4K, it turns 15mm lens to 35mm POV full frame. I can't find answer to follow question: How Leica 15mm F1.7 dealing with AF-C autofocus (on GH4)? Now that will very interesting because of work with gimbals and steadicams (face detection autofocus mode). I can't touch manual focus ring during my work on gimbal. I upgraded from Leica 25mm 1.4 to Olympus 25 1.8 because of very bad autofocus AF-C. I very impressed of AF-C compatibility of Olympus prime lenses on GH4. Second Leica lens I have is 45mm 2.8 MACRO lens, it makes bad AF-C too, Olympus 45 1.8 real better.
Sharpness is perhaps the strongest feature of this lens. It’s wonderful wide open and you may not want to stop it down. In fact, it only marginally improves until you start to see diffraction at around f5.6.
http://www.thephoblographer.com/2014/11/17/review-panasonic-15mm-f1-7-micro-four-thirds/
Optically it's very good indeed. Even wide open. The point of focus is very sharp and the images have a slightly different look to other m4/3 lenses I've used. It's more like a (D)SLR lens type rendering with a nice rich colour depth and contrast.
After 2 months shooting exclusively with this lens attached to my GM1, here is my personal review of it (and I will say upfront that I've fallen in love with it), with plenty of pictures taken at the Spanish Pyrenees to illustrate my opinions: http://gonzalobroto.blogspot.com/2014/08/new-lens-old-grounds-review-of.html
The Summilux 15mm delivers high contrast images with very crisp details even with the aperture wide-open.
http://www.cameralabs.com/reviews/Panasonic_Leica_DG_Summilux_15mm_f1-7_H-X015/
Centre sharpness is respectable even wide open at f/1.7, sharpening up nicely by f/2.8, while the edges are acceptably sharp from f/2.8 to f/8.
http://www.photographyblog.com/reviews/panasonic_leica_dg_summilux_15mm_f1_7_asph_review/
Short test of the lens on the GH4. Really nice optics, compact and lightweight, good color and sharp.
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