![Wimberley AP-609 Quick Release Replacement Foot for Sony: 400 f/2.8 GM OSS Wimberley AP-609 Quick Release Replacement Foot for Sony: 400 f/2.8 GM OSS](https://cdn11.bigcommerce.com/s-f9fok/images/stencil/370x488/products/17162/34005/wimberley_ap_609_replacement_foot_for_sony_1535023310_1431021__08860.1563630773.jpg?c=2)
Designed for the Sony FE 70-200mm f/2.8 GM OSS lens, the AP-611 Quick Release Replacement Foot from Wimberley is an anodized 6061 aluminum foot that is compatible with most Arca-type clamps and heads on the market. By replacing the original factory foot, the AP-611 adds rigidness and stability and reduces flex and vibration while mounted to a head. Additionally, a double dovetail allows accessories to attach to the bottom or the top of the foot. The lower profile of the plate provides better balance when mounted on a head as well. If you're going to use the optional safety stop screws, Wimberley recommends using a clamp with channels that allow the screws on the foot to slide back and forth.