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# ZUNOW 1:2.8 f=4.5cm lens adapter to Leica-L(L39)
This adapter enables to use "ZUNOW 1:2.8 f=4.5cm lens on Neoca SV camera" on SONY NEX, alpha 7 camera with Leica-L mount adapter with focusing helicoid.
* You have to remove lens from camera and modify always shutter opened.
* You need rear lens holding ring to adapt lens with this adapter.
* Lens flange back is pretty strict. 3D print machine that Shapeways has been updating often return different results. I usually make lens adapter a bit over-inf. If you couldn't get infinity focus, you maybe get infinity focus by cutting or scraping it.