306) To focus a S-4 from soft to hard focus, you move the lens train which way from the lamp? 308) Patterns go in up-side down or right side up? 309) What is the relationship between the diameter and the thickness of a lens? 310) What is the Altman #100 3" Fresnel Inkie rated for in wattage? What is the normal Wattage and ANSI lamp used in it? 314) Why are stage lighting fixtures not recommended for use at home? 315) Why are moving lights illegal to use at home in reference to harmonics? 321) Why are normal mirrors bad to use with lasers? 327) Moving the focus towards the lens at the same time as closing the Iris will do what to a follow- spot? 328) What is the difference between a step lens and a Fresnel Lens? 329) What is the difference between an ellipsoidal and parabolic reflector? 336) When a C-Clamp is finger tight on a pipe, how much more should it be tightened to support a fixture even if roostered out? 337) What is the difference in beam between a Ellipsoidal, Spherical and Parabolic Reflector? 338) Bright spots in the beam of a Leko is generally caused by what? 339) What is the use of a top hat installed on a Leko? 340) Which should be done first on a leko: Run the barrel to focus the instrument or the shutter cut, why? 341) How long should you wait before replacing the lamp on a standard moving light? 344) On a Coemar Panorama Cyc, what address would the third instrument have? 345) What is the cause of fuzzy images on a technobeam? 346) What is the pan and tilt capacity of a Studio Spot? 347) What does Fchn 025 on a Colorram II do?