NVFLX Castel Q Focusing Rack
The CASTEL-Q focusing rack is suitable for all DSLR and most medium format cameras, and has an Arca-pattern quick release clamp to accept Novoflex-Q or most other other Arca-type camera plates. Focusing racks are useful in macro photography because at very close distances, focusing with the lens becomes difficult or impossible. Moving the complete camera/lens assembly backwards and forwards is best, and rack enables precise focus to be achieved easily and quickly. The Castel-Q is formed from a solid aluminium extrusion, and uses rack-and-pinion gearing to give precise control, free from any backlash.