Kirk enterprises has solved the problem facing photographers who want to use dslr or medium format digital cameras attached to kirk custom l brackets in a vertical position while tethered to a computer the lba 1 is an extension that mounts to the side of any kirk custom l bracket allowing the camera to switch from horizontal to vertical with computer and power cables attached fits all kirk custom l brackets machined from 6061t6 aluminium with stainless steel hex screws can be left on or easi