
K&F Concept adapters work very well. They fit exactly as they should and do their job well. Now I've bought 5 of these and use them on Canon and Nikon lenses and they all work perfectly. Because I use lenses from different manufacturers, including a Sony lens kit, I prefer to have an adapter for each lens than an adapter for each lens manufacturer. This allows me to switch lenses as quickly as if they were Sony lenses. With these adapters, I can use very inexpensive, high-quality manual focus lenses on my Sony A7II, regardless of the lens manufacturer.

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