The Fotodiox DLX Stretch Adapter allows you to extend the lens from the camera body giving the ability to focus closer than normal as well as correct for any possible back focus the lens may have, in effect this adapter acts like a small built-in bellows. Compatible Sony E-mount Cameras (including but not limited to): a7/7R/7S, a7/7R/7S II, a7/7R/7S III, a7R IV, a9, a5000, a5100, a6000, a6100, a6300, a6400, a6500, a6600, NEX-3, NEX-5/5N/5R/5T, NEX-6, NEX-7, NEX-C3, NEX-F3, QX1. Please Note: With enough shift movement on certain focal lengths, vignetting may occur. This is a manual adapter, so lens functions that rely on electronic communication with the camera body (autofocus, AE metering, image stabilization, etc. ) will be disrupted. Set your camera to “Manual' or ‘Aperture Priority' for metering. If camera does not release be sure to enable ‘shoot without lens' in camera settings. We state “infinity focus allowed” because our adapters are designed to be universal which can prevent some lenses from focusing to infinity at the infinity mark.