IDX Manual Focus Remote Controller for Canon and Fujinon B4 Lens Focus demand for Canon/Fujinon B4 Lens. Tech Specs: Applicable Lens: Fujinon, Canon (with some exceptions) Operating Temperature: 32-104?F Storage Temperature: -4-140?F Universal Shaft: 37.4 inches Dimensions (Main Body): 2.87(W) x 2.87(H) x 3.78(D) inches Weight: 3.53 lbs approx.