JINTU EF-NEX II Auto Focus Lens Mount Adapter Ring for Canon EOS EF/EF-S for Sony E Mount Mirrorless Camera Lens Converter NEX a7 a7 II a7 III a7R a7R II a7R III a7S a7S II a7S III A9 II a7R IV a6000

IS works perfectly on the lenses I've tried (10-18mm STM, 100-400 II).AF has worked on all lenses I've tried (24mm STM, 50mm II & 50mm STM, 75-300mm III, 100-400mm II, 18-55mm kit lens) with the exception of the 10-18mm STM. Manual focus works fine on all STM lenses though so this isn't a major issue - especially for a wide angle lens.AF performance is generally consistent but is a bit slow on my A6000 but is quickest in AF-S with the 'Wide' focus area set.

Having used both a Metabones adapter and this one on my A7Rii, I can say that the AF works as well as as the Metabones. The build quality isn't as strong, but is still adequate. However, after nearly a year, the front mount ring has started to come loose when used with heavier lenses (Canon 70-200mm 2.8 IS L II, 50mm 1.2 L, etc). This is a result of the top two screws working loose under the weight of the lens, and can be temporarily fixed by simply tightening them back up again (I might have to try glueing them in next time).The tripod mount on the adaptor wiggles about as it doesn't fit the body of the adaptor very well, but as it's only a cm or so infront of the tripod mount on the camera, and heavy lenses tend to come with their own tripod collar anyway, I tend not to use it at all.Considering this adaptor is almost 10x cheaper than a Metabones, it's a no-brainer. Just don't expect a native lens level of AF speed/accuracy or full lens compatibility, as no adaptor can give you this.

The autofocus is useless, and it doesn't work properly with zoom lenses.

Bought this for my Sony A7 and Sigma 28-300mm zoom lens. Build quality appears to be good with a good solid fit to both camera and lens. Exposure seems to be fine, but autofocus is just useless. Hunts for a long time and 9 out of 10 times doesn't achieve focus at all. However, will keep it, since decided to just use manual focus instead.

Great adapter, very solid build quality. It allows for the use of all ef-s lens functionality on my sony a6300.

*** edited please read ***The adapter feels solid and well built. No problems here. Auto focus was very slow as to be expected, however, I only have wide angle lenses so manual focussing is fine for me. IS still works as it should but most importantly this product is perfect for me and was rather cheap! If you really need excellent AF performance, look at the sigma mc11 or metabones.*After roughly a month or so, the adapter became incredibly loose, causing my lenses to wobble a lot. I've not decided yet on how I will fix this this issue, tightening the screws doesn't really help. Either, buy a better more reliable one, or keep in mind the build quality isn't that great.

Causes some vignetting on wider shots but all round good construction

Best purchase I've ever made, no regrets it's perfect

adaptation sur un boîtier Sony

Provato molte volte e il risultato è sempre uguale : appena inserito sul corpo macchina (con Obiettivo canon) mette a fuoco correttamente e velocemente per 5/6 scatti e poi non si riesce più a mettere a fuoco si deve usare solo in modalità manuale. Però si riesce comunque bene a variare l'apertura del diaframma in modo elettronico.

これで￥3299-は世界一安いしっかり動作で文句無し。高級感あります。

このお値段でAFの速さを期待する方がどうかと思いますので、笑っちゃうほど激遅なAFは度外視しまして外観の作りは意外としっかりしてますし、マウントのガタもありません素通しのアダプターでもこれくらいはするので、焦点距離や絞りが伝送されるだけで十分です因みにレンズ情報は表示されません追記です、ガタはないと言いましたが、結構ガタつきます、明るい場所で白飛びしますので、絞りも怪しいものです、マニュアル専用と割り切った方が良さそうです星一つ減です