Building upon the success of the previous 2 generations, the new adapter and firmware has a big mechanical upgrade over the previous model.Big Upgrade Weather Sealed Design Compatible with Sony La-EA5 Adapter Adds Manual Lens Focus ConfirmationNever SaferWeather Sealed rubber ring designSet You Free Dust-proof, Water-proof, Slip-proof. Nothing Can Stop You from Getting Your Shots!Adds manual lens focus confirmation promptEven if this is a manual lens with no electronic contacts. Even if its a stack adaptation.Compatible with Sony La-EA5 AdapterSony A Mount Lens on Nikon Z Camera with Autofocus? Made possible.Patented Lens Release buttonQuick and Easy Release Button. Durable Stainless Steel Material.Electrical ContactImproved Durability, Prolonged Electrical Contacts Life. No more contact issues after long term usage.New Spring New RingUpgraded on Design and Materials, the New Spring Aims to Provide Improved Stability with Heavy Lens.Support Auto-FocusAdapt Sony E Mount Lenses to Nikon Z Mirrorless Camera with Autofocus Function Retained.Auto Aperture CouplingAble to Sync with Both Camera and Lenses Aperture Adjustment.Support Function Keys on the Sony Lens BodySupport All Function Keys including Customized Functions.Scratch proof2mm ThicknessPush the Limit to Replicate Native Lens User Experience.Ultra Sealed Pcb (Printed Circuit Board)Maximum Protection on the Pcb to Avoid Related Issues..