inglis wrote:
Jon,
Would be great to crowd source a FE to R adaptor, or even test the waters to check interest. I would certainly be interested.
John
I think I could crowdfund production, perhaps even in the beta phase. E.g., design a proof of concept, reach out to a few photographers to be beta testers, backers in the first stage get a photobook of work from those beta testers (and also make further testing/refinement possible), then backers in the second stage get an actual adapter as a reward. But -- that's a ways out, and I still have hope that Leica will do the right thing by R users on this one.
teiki,
I doubt a fully featured R adapter-SL {there, are you happy now, Alpha? } would be feasible for a third party. The R mount is relatively simple and the FE mount specifications are available; I would be surprised if the SL specifications would be as easy to reverse engineer, especially when a testbed camera costs 10x as much. On the other hand, if I can make an R-FE, that might get Leica's attention and maybe they'd be interested in working with me to make an R-L solution.
JonPB wrote:
I know you say it in jest, but I'm curious if there's any logic to the ordering of the adapter names. For some reason, body-to-lens (e.g., FE to R) makes intuitive sense to me, perhaps because I think of photography gear as comprising lenses and lens accessories.
While we're at it, why are apertures represented as, e.g., 1:2/50, rather than just 50/2?
Cheers,
Jon
When it comes to adapter names, I've seen it as converting from lens mount "X" to body mount "Y". Then again, the only adapters I own are metabones (R to E), rayqual (LR to FX) and voigtlander (VM to E), which seem to follow the lens to body nomenclature. There probably are adapters out there that are labeled as you described (body to lens) that I'm not aware of.
At first I assumed inglis was referring to an adapter that you would use your R glass on Sony F(E) body, but I knew those adapters already existed. Therefore, I interpreted his statement as a FE mount lens being adapted to a R mount body.
The closest I could find about the 1:2/50 vs 50/2 is from the wikipedia page under F-number and "aperture ratio" and "intensity ratio", with 1:2 being a ratio, but no further exacting information regarding the 1:2/50 vs 50/2.
I'm sure someone here knows the maths and why behind it!
Alpha_Geist wrote:
When it comes to adapter names, I've seen it as converting from lens mount "X" to body mount "Y". Then again, the only adapters I own are metabones (R to E), rayqual (LR to FX) and voigtlander (VM to E), which seem to follow the lens to body nomenclature. There probably are adapters out there that are labeled as you described (body to lens) that I'm not aware of.
At first I assumed inglis was referring to an adapter that you would use your R glass on Sony F(E) body, but I knew those adapters already existed. Therefore, I interpreted his statement as a FE mount lens being adapted to a R mount body.
The closest I could find about the 1:2/50 vs 50/2 is from the wikipedia page under F-number and "aperture ratio" and "intensity ratio", with 1:2 being a ratio, but no further exacting information regarding the 1:2/50 vs 50/2.
I'm sure someone here knows the maths and why behind it! ...Show more →
Ah, so it wasn't in jest! My apologies.
Yes, there are straight mechanical adapters. (I'm rather a fan of my Rayqual.) But R lenses can work with full exposure automation. An adapter that reads the R cam and actuates the aperture lever can tell a camera what the wide-open aperture is and stop it down upon demand. An adapter that could read the ROM chip could tell the camera the focus distance and focal length as well, which is handy for flash and digital corrections in post. Which is to say, there's a lot of untapped potential there: focusing wide open and the camera stops down to the desired aperture upon exposure, having the camera vary aperture programmatically, automatic focal length selection for IBIS, etc.
Sort of the equivalent of making a chip for the EF mount. Except more complex for fewer added features and with a smaller market.
Cheers,
Jon
Oh, and the aperture ratio is in relation to the focal length. So the widest aperture in a 50mm f/2 lens is 25mm (optically if not mechanically), as is the aperture for a 35mm f/1.4. Which is why I prefer the 50/2 or 35/1.4 nomenclature, but I'm sure the lens manufacturers have their reason for using 1:1.4/35 or whatnot.
JonPB wrote:
Ah, so it wasn't in jest! My apologies.
Yes, there are straight mechanical adapters. (I'm rather a fan of my Rayqual.) But R lenses can work with full exposure automation. An adapter that reads the R cam and actuates the aperture lever can tell a camera what the wide-open aperture is and stop it down upon demand. An adapter that could read the ROM chip could tell the camera the focus distance and focal length as well, which is handy for flash and digital corrections in post. Which is to say, there's a lot of untapped potential there: focusing wide open and the camera stops down to the desired aperture upon exposure, having the camera vary aperture programmatically, automatic focal length selection for IBIS, etc.
Sort of the equivalent of making a chip for the EF mount. Except more complex for fewer added features and with a smaller market.
Cheers,
Jon
Oh, and the aperture ratio is in relation to the focal length. So the widest aperture in a 50mm f/2 lens is 25mm (optically if not mechanically), as is the aperture for a 35mm f/1.4. Which is why I prefer the 50/2 or 35/1.4 nomenclature, but I'm sure the lens manufacturers have their reason for using 1:1.4/35 or whatnot....Show more →
Haha, no worries!
Now an adapter that would at least electronically control aperture on R lenses would be AWESOME! Stop down metering isn't very fun. Especially when the viewfinder split prism blacks out!!!
Like you said, definitely untapped potential there. I hope there's enough interest in these older R lenses to bring a feature like that to the camera bodies of today and future into reality. Seems like a crowdfunding project would be the only solution to this...unless a rich Saudi prince takes it upon him to not only create an electronic adapter, but "share" *cough*$$$*cough* it with the rest of us humble photographers.
Visiting Japan was definitely a life-influencing experience, and every time I look at the pics again, I want to go back there to try out a couple more dishes and walk down a couple more alleys.
Bit of heresy for this thread: I've also had a recent change of heart. I don't really care about lenses anymore. I used to obsess over it too much, but I've found that simply using a 50mm cron (which is >30 years old), I'm able to take pictures of what I consider to be *interesting* and share it with family and friends. I'm able to control the image's appearance just enough to hone in on what I want the viewer to observe, and I can take pictures in day or night without a flash. If my eyes can see it, I can snap it. I think that's pretty much enough for me. Looking back on some of my photos from the last few years (since I got the 6D 50mm pair), I've noticed that many of my pics have turned out really great, and it seems time spent on taking pictures and seeing past the camera is the way for me. Anyway, I'll keep posting here in the meantime.
teiki arii wrote:
Nice post-production! Nice photos...
You take so many photos. Always hiden by your cameras, should your kids be able to recognize their father?
So many? I wish I can take more. I spent time with them whenever i can, We are in love like heaven
Hi shute,
I have a Leica-R 80-20/4 working on my two Eos 6D bodies via an adapter K&F Concept LER, and everything is fine! But if there is a canon mount on it, it should work on Eos directly and you just need an Canon-Sony FE adapter to fit with your A7.
best regards.
Photo cross posted in the Sony FE Image thread and taken at 2:09 PM on June 29, 2015 of a crashing wave, Mount Desert Island in Acadia National Park, Maine. Image taken with my tripod mounted Leica R 180mm f3.4 Apo Telyt lens and my A7r, ISO 100, lens set to about f8? for 1/200 second. Processed in LR6.
Rich
Dec 05, 2015 at 10:18 AM
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naturephoto1 wrote:
Photo cross posted in the Sony FE Image thread and taken at 2:09 PM on June 29, 2015 of a crashing wave, Mount Desert Island in Acadia National Park, Maine. Image taken with my tripod mounted Leica R 180mm f3.4 Apo Telyt lens and my A7r, ISO 100, lens set to about f8? for 1/200 second. Processed in LR6.
The more I limit myself to them, the more I think I could be happy with nothing other than the 21-35 and 35-70/4. I'm even contemplating selling a few others (28/2.8 mk ii, 90/2) to help fund an SL.
} would be feasible for a third party. The R mount is relatively simple and the FE mount specifications are available; I would be surprised if the SL specifications would be as easy to reverse engineer, especially when a testbed camera costs 10x as much. On the other hand, if I can make an R-FE, that might get Leica's attention and maybe they'd be interested in working with me to make an R-L solution. 
