adan Posted July 12, 2017 Share #141 Posted July 12, 2017 (edited) Advertisement (gone after registration) Asymmetric, disruptive, under-the-radar sales campaigns are "guerilla marketing." For "gorilla marketing," you have to look somewhere else: Edited July 12, 2017 by adan 2 Link to post Share on other sites More sharing options...
Advertisement Posted July 12, 2017 Posted July 12, 2017 Hi adan, Take a look here 7artisans 50mm F1.1 Leica M Mount. I'm sure you'll find what you were looking for!
ECohen Posted July 12, 2017 Share #142 Posted July 12, 2017 Asymmetric, disruptive, under-the-radar sales campaigns are "guerilla marketing." For "gorilla marketing," you have to look somewhere else: OOP's Link to post Share on other sites More sharing options...
jdlaing Posted July 13, 2017 Share #143 Posted July 13, 2017 a few...... Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! 8 Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! ' data-webShareUrl='https://www.l-camera-forum.com/topic/273821-7artisans-50mm-f11-leica-m-mount/?do=findComment&comment=3314682'>More sharing options...
TomB_tx Posted July 13, 2017 Share #144 Posted July 13, 2017 This thread caught my interest, but I don't want such a fast lens, and my M9 likely won't be back for 6 months anyway. While I continue shooting my film Ms, for digital I'll be using an A7 with old manual SLR lenses. I had no native mount lenses for the A7, and since 35 is my preferred FL, I couldn't resist a small gamble on the 7-Artisans 35 f2 E mount, which arrived today. For $160 I'm quite impressed. Mechanically it seems well made, at least comparable to VC. Ideal size for the A7, with a slide-out metal hood. Yes, f2 has a soft glow, but by 2.8 it seems quite good, and the corners don't smear badly on the A7 like most of my M-mount 35s. (The Summarit 35 corners hold up pretty well on the A7, but with added adapter bulk.) It also came with a stick-on focus tab, which I'll attach, as my left thumb recently encountered a table saw blade and is still awkward. Anyway, this sample makes me think they have potential to become an interesting supplier. 1 Link to post Share on other sites More sharing options...
ropo54 Posted July 13, 2017 Share #145 Posted July 13, 2017 I couldn't resist a small gamble on the 7-Artisans 35 f2 E mount, which arrived today. For $160 I'm quite impressed. Mechanically it seems well made, at least comparable to VC. Ideal size for the A7, with a slide-out metal hood. Yes, f2 has a soft glow, but by 2.8 it seems quite good, Would you post some photos? Thanks, Rob Link to post Share on other sites More sharing options...
DezFoto Posted July 13, 2017 Share #146 Posted July 13, 2017 More like "7 Patent Infringers". Want a CV? Just get one. It's a proven product. If you can afford a digital M, my bet is that you can afford a used CV or ZM. It's most definitely not a clone of any lens that I'm aware of. 1 Link to post Share on other sites More sharing options...
FrozenInTime Posted July 13, 2017 Share #147 Posted July 13, 2017 Advertisement (gone after registration) It's most definitely not a clone of any lens that I'm aware of. Three very different 'Sonnar' lenses ( at sunset ) 1 Link to post Share on other sites More sharing options...
adan Posted July 13, 2017 Share #148 Posted July 13, 2017 (edited) Depends on how you define "clones" - MOST relatively simple "classic" lenses are derived from some earlier type, with adjustments: splitting one element into two cemented elements, or vice-versa, etc. Just looking at the partially obscured diagram on the 7Artisans (7A) box on LeicaRumors, it looks, in rough outline, like yet another "seven-element Double Gauss" design. In which the last element is split into two thinner elements. Which goes back at least as far as the 1932 Schneider Xenon 50mm f/1.5, but has been used in many other lenses, including the Leitz Xenon/Summarit 50 f/1.5, the Summilux-M 50 pre-ASPH, the Noctilux f/1.0, an Olympus Pen 40mm, and the C/V Nokton f/1.5. The 7A, interestingly, reverses the group behind the aperture blades, which are usually concave/convex )((), but in this case are convex/concave ())(. You can see how "derivations" in fast-ish lenses have developed from the Petzval Portrait lens (f/3.6 in 1840!) in this chart. One site selling the 7Artisans (and also, I see, FrozeninTime) claims it's a Sonnar-type, but I don't buy that - classic Sonnars are defined by a second group of 3 (!) cemented elements, which the 7A f/1.1 doesn't use. A different "genetic pathway." To be clear, the 7A lens would fall into the "Advanced Xenon" or "Expanded Ultron" types in this chart. https://s-media-cache-ak0.pinimg.com/originals/d2/6c/a0/d26ca02a909f613867c1325bcebecd0d.jpg It should be noted that back between 1955-62, there was a "superfast 50mm arms race" with many entries: Nikkor-N f/1.1, Zunow f/1.1, Canon f/0.95. All for RF cameras, at that time. By comparison, Leica's original Noctilux (1966, f/1.2) was a day late and a dollar short joining in, but performed better (2 ASPH surfaces). So the C/V Nokton 50mm f/1.1 itself is also a derivative of - something - much earlier. The Nikkor-N (for Nine elements!), Canon and Zunow can all be seen here: https://www.cameraquest.com/5011.htm Edited July 13, 2017 by adan 4 Link to post Share on other sites More sharing options...
FrozenInTime Posted July 13, 2017 Share #149 Posted July 13, 2017 One site selling the 7Artisans (and also, I see, FrozeninTime) claims it's a Sonnar-type, but I don't buy that - classic Sonnars are defined by a second group of 3 (!) cemented elements, which the 7A f/1.1 doesn't use. A different "genetic pathway." I was also questioning the 'Sonnar' tag. 2 Link to post Share on other sites More sharing options...
FrozenInTime Posted July 13, 2017 Share #150 Posted July 13, 2017 Depends on how you define "clones" - MOST relatively simple "classic" lenses are derived from some earlier type, with adjustments: splitting one element into two cemented elements, or vice-versa, etc. Just looking at the partially obscured diagram on the 7Artisans (7A) box on LeicaRumors, Does this help 1 Link to post Share on other sites More sharing options...
pgk Posted July 13, 2017 Share #151 Posted July 13, 2017 MOST relatively simple "classic" lenses are derived from some earlier type, with adjustments: splitting one element into two cemented elements, or vice-versa, etc. Yes, its difficult to see how any patents could be infringed since there is little which could be patented in a classic, non-aspherical design. A modification to an existing and well out of patent design is unlikely to be ground breaking enough to be patentable I'd suggest. 1 Link to post Share on other sites More sharing options...
adan Posted July 13, 2017 Share #152 Posted July 13, 2017 Thanks. Confirms what I could already see. (Thankfully, lens elements are symmetrical, so seeing the top half told me what the bottom half looked like ) The 7Artisans 50mm images about like those c. 1960 f/1.1+ lenses. Not bokeh kings, just low-light kings. BTW - I finally found a (small) diagram of the Nikkor 50mm f/1.1. Not the same as the 7A, even though it also has a very protruding rear element group: http://allphotolenses.com/public/files/optical/51ab5be48778a8777b12e02b399ce5bf.jpg http://www.9days.hk/images/post/20140220-nikkor-n-c-50mm-f1_1/9days-post-20140220-nikkor-50mm-1_1-7.jpg 1 Link to post Share on other sites More sharing options...
jcblxpt Posted July 13, 2017 Share #153 Posted July 13, 2017 Hi, The lens has just arrived. A very fast dispatch (ordered 4 july). The first impression is above expectations with regard to appearance and weight. And best of all, I did not pay any other tax. (Came from amazon UK to Portugal).Soon and if necessary I will post more information about it here. Regards João 1 Link to post Share on other sites More sharing options...
Guest JMF Posted July 13, 2017 Share #154 Posted July 13, 2017 Hi, The lens has just arrived. A very fast dispatch (ordered 4 july). The first impression is above expectations with regard to appearance and weight. And best of all, I did not pay any other tax. (Came from amazon UK to Portugal). Soon and if necessary I will post more information about it here. Regards João Hi João, please share some pictures taken with the lens ! Pode compartilhar fotos, agradecemos ! Regards, Jean-Marc. Link to post Share on other sites More sharing options...
pyp Posted July 14, 2017 Share #155 Posted July 14, 2017 I've also just got the lens from Singapore. For those of you who wants to use it on the SL, the rear element extrude too long to the back and won't let you focus to infinity with the M-SL adapter. But works perfectly fine with my M10. 1 Link to post Share on other sites More sharing options...
jcblxpt Posted July 14, 2017 Share #156 Posted July 14, 2017 Hi, again, Unfortunately my copy features a strong back focus.I have to find time to calibrate it, but I think I have a problem .My copy did not have the small screwdriver, and I do not know how to find one that fits.The calibrate screws looks like hexagonal but are really very small, I think less than 1 mm.I'm going to try this lens this weekend, but only with the EVF.My advice is to buy it only with the screwdriver.I'll keep in touch, João (sorry my English) Link to post Share on other sites More sharing options...
mdg1371 Posted July 14, 2017 Share #157 Posted July 14, 2017 Just had my refund processed, to the credit of the company, their communication has been excellent. My copy was impossible to calibrate for both close focus and mid to long distance -- calibrating for one, caused strong mis-focus at the other. Link to post Share on other sites More sharing options...
TomB_tx Posted July 15, 2017 Share #158 Posted July 15, 2017 (edited) Would you post some photos? Thanks, Rob Since you asked - although this lens isn't (yet) an M lens they say they will release one in M mount. Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! It feels very well made - solid aluminum, smooth focus (easy 1-finger after attaching the tab), metal pull out hood and solid metal cap. A bit of glow at f2, and soap-bubble bokeh, but for $160US... A Voigt M to E adapter costs more than that. The lens has no electrical contacts to the A7, so no lens information recorded, and no auto magnify for focusing. Edited July 15, 2017 by TomB_tx 2 Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! It feels very well made - solid aluminum, smooth focus (easy 1-finger after attaching the tab), metal pull out hood and solid metal cap. A bit of glow at f2, and soap-bubble bokeh, but for $160US... A Voigt M to E adapter costs more than that. The lens has no electrical contacts to the A7, so no lens information recorded, and no auto magnify for focusing. ' data-webShareUrl='https://www.l-camera-forum.com/topic/273821-7artisans-50mm-f11-leica-m-mount/?do=findComment&comment=3316225'>More sharing options...
TomB_tx Posted July 15, 2017 Share #159 Posted July 15, 2017 And a 100% crop of the above, still at f2. Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! 1 Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! ' data-webShareUrl='https://www.l-camera-forum.com/topic/273821-7artisans-50mm-f11-leica-m-mount/?do=findComment&comment=3316231'>More sharing options...
6bit Posted July 16, 2017 Share #160 Posted July 16, 2017 Two videos regarding the 7artisan lens were posted recently in a Sony alpha Facebook group. It was tested on a Sony a7. Has raw files for download and included a Leica 50 Summicron. This was the earlier video. In this video he mentions the lens was calibrated for the range finder. It seems it may be a bit soft wide open but cleans up good enough at the $369 price point. I wouldn't mind a 90mm lens from this company. Link to post Share on other sites More sharing options...
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