Quickly mount your camera on your tripod in either landscape or portrait by using an L-plate. Shaped like an "L", the plate has two sets of mounting dovetails; mount using either set. No need to flop your camera over and down into the drop notch to go vertical. Instead, use an L-plate and save yourself the hassle and time you'd have to spend recomposing. Also, an L-plate keeps your load centered directly atop the tripod's apex—where you can retain the best vibration damping and mass coupling.