Comments about Benro Benro PU-70 Extra Long Slide-In QR Accessory Plate with 1/4-20 Thread for All BallHeads:
I bought this longer slide-in plate to support a Nikon 70-200 plus lens extender mounted to a D700 camera. The extra length of the plate allows you to get the lens support point directly beneath the center of balance of the whole ensemble. With only the stock short tripod plate, proper balance can't be attained. With this longer plate all is rock steady.