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Hi, I have a new A7M2. I purchased a 18 year old Leica 35-70mm F4 Macro/Zoom lens. My question is, I will use this for traveling, generally street shots. I know that I should manually adjust the IBIS to the exact lens size, but at any given point that could change from a 35MM through to 70mm. I would rather not continually adjust the IBIS. What would be the difference or problem if I left it set at 70MM verses 35MM or maybe 50MM? I have searched for an answer, but have found nothing close to answering this question. Thank you,

Hi, I've decided to ditch my Canon gear & make the switch to Sony A7R II. I'm the 28-50-90 kinda guy. Since I travel a lot I need the gear to be small, light weight & sturdy. The results of the Sony 28mm f2 on flickr don't impress me much. I've decided on the following two lenses as my starting kit with the A7R II & novoflex adapter. 1.) Leica Elmarit-M 28mm f/2.8 asph 2.) Leica Summarit-M 90mm f/2.4 Considering the crop factor mode, I'll also be able to use the two lenses at approx. 42mm & 135mm respectively which gives me enough range (although with lesser megapixels which is a compromise I'm ok with). I intend to add a dedicated 50mm lens at a later time when budget allows. I'd like to know if anyone is using either of these lenses on their Sony? How do they perform? Should I rather look at the Leica Summicron-m 28mm since I've heard (but not seen much results) the Elmarit 28mm doesn't gel too well with the Sony? The extra stop of light isn't as big of a factor for me as the image quality. Also I'm investing in Leica lenses coz I like the look of the Leica glass and might someday purchase a Leica body which is clearly out of my budget in the near future. I'd consider loxia trilogy if a 28 & 90 existed but the closes they have is Batis 25mm & 85mm which both look bulky. Any advice or wisdom you have to offer is highly appreciated. Cheers.

Hey guys, I'm looking for a fast 90mm lens for my M 240 and maybe later an A7r to use for sports, concerts and portraits (like the stuff you can see on my Flickr: http://www.flickr.com/photos/48126456@N05/ ). However, I was not able to find any in-depth comparison of the two main options - the Leica Summicron M 90mm (1980 - 1998) and the Leica Summicron M 90mm APO (1998 - current). I only heard that the newer one is "better", but I haven't seen any proof of that. Does anybody have any experience with one or both lenses and can tell me how big the difference is? Or do you know any online comparison between the two? Full size samples would be incredibly helpful too. My budget isn't endless either, but I could get the non-APO version for about €900 and the APO one for about €1 800 used in very good condition - which one represents better value in your opinion? Thank you in advance for any help!

The new Techart adapter (M mount to E-mount) enables AF with Leitz lenses that do not have a built in focusing motor. The motor is in the adapter. As present adapters for e.g. Canon lenses do not allow AF with ALL lenses but only with a few newer ones, it may be a good idea to have the motor in the adapter instead of relying on the motor in the lens. Such an adapter would be a rather complex affair as the diaphragm would still have to be set by the camera body through the electrical contacts on the camera body and lens. But the system would not have to rely on a possibly not working focusing motor in the lens as that would be done by the adapter. Hopefully Techart, Metabones or whoever will take up this idea and construct an adapter which allows AF with all Canon/Nikon etc. lenses.

Inspired by the many lens adaptations going on , i picked up an old projector to attempt one myself, after some research this is my Frankenleicaony )) i managed to get 2 leica projector lenses , 90mm f2.5 and a 35mm f2.8 , the 35mm elmaron came with the focusing tube which was to me very important , the 90mm also fits into the elmarons focusing housing which is nothing but a black tube. taking into account the sizes and trying to attach it to a m42 helicoid did not work for me , so i ordered an m52 to m42 helicoid which the lenses and its black focusing tubes fitted into , sadly this is not perfect so a little electrical tape did the trick , this will be replaced by a step up ring when it arrives from timbuktu (hopefully) attaching all this to an m42 to nex does not work , but it works perfectly with an m39 to nex , the 2 adapter to nex were of the same brand so i took out the silver thread rings and tried swapping them over , the m42 thread rings outer rim was 3-4mm wider so out came the file and several hours later it slotted in to the m39 adapter housing perfect , everything works fine , intact beyond my expectations i can focus from about 30cms out to infinity and do some pretty good close ups ,

Since 2012 I've tested hundreds of legacy lenses on the SONY NEX7 and A7r. Here's a quick overview of some favorites Biggest bang for the buck - the Minolta MD Rokkor lenses. The 50mm 1.7 tests as well any other 50s until the FE55 and Otus 55 - especially as you head into f4 to f5.6. These lenses were as cheap as $17 from KEH. The MD 28 2.5 is also a fun lens that I prefer over the Zeiss Hollywood Distagon f2.0 depending on the situation. The best zoom value ever is probably the Contax Zeiss 28-85mm. It's a dust pump, it's heavy, the g'damn front element rotates, no one single hood works across its range, but it is very very sharp, has perfect Zeiss color and is cheaper and broader than the fragile 35-70mm. Coming up in focal lengths - The Rokinon 14mm 2.8 (not legacy really) but a screaming bargain at $300ish. I had to test several to get a great one, and the damn thing reaches infinity halfway in the throw. But otherwise perfect corner to corner. 21mm - hands down the Zeiss Distagon 21mm - we all know DXO is wrong again in their guesstimates. 28mm - in daylight and 3d effect - the Hollywood Distagon 28mm 2.0 AEG - but at night leave it at home - it absolutely sucks due to coma. 35mm - The Contax 35 f.15 AEG - some PF wide open but settles down nicely by 4.0 - 5.6 50mm - either C/Y 50mm 1,4 and 1.7 - same issues as 35mm 1.4 but nice by 4.0 - the Minolta's are a bargain 85mm - as many swear by as swear at the Contax 85mm lenses. I never missed them too much. 100mm - overrated Contax - the ones I've tested had crazy bad CA. I passed 135mm - never found a good one until the new Zeiss Apo-Sonnar - this is probably the finest lens bargain on the planet. It is a true APO. 180mm - The C/Y Sonnar 2.8 is good for reach as long as there isn't high contrast. 300mm - the 300 f4 is a piece of crap - not really good for anything other than clubbing a Leicaphile with. I never really found a Leica that performed really well but they do draw nicely if blurred pixels are your thing. There is almost always an issue with every Leica lens - flare, ca, poor resolution, it's always something. I tried a few Nikon manual focusing lenses out - they weren't that good either - the Contax always won over the Nikons in the 20mm-100mm range.