It was specifically designed for the Sony E-mount lens and features autofocus for macro photography. It supports the camera's TTL functions and AE mode. In most cases, a single tube is sufficient to achieve the macro effect with excellent photo quality. It can be used alone or in combination to achieve three different magnifications and works perfectly with the camera's autofocus. The pure copper pin ensures perfect interaction, while the metal interface allows for better transmission. It can be used alone or in combination and works seamlessly with the camera's autofocus.