Using the ADJ Lighting EP Lens 2550Z is easy. First, make sure it's properly attached to your ADJ Encore Profile Pro WW or Encore Profile Pro Color ellipsoidals. You can use one hand to adjust the field angle and focus thanks to the smooth lens movement. The range is from 25 to 50 degrees, so just set it according to your projection needs. When it comes to the shutters, they're made of 20 - gauge stainless steel for sharp projections. The knobs and handles are built to last, but be gentle when using them. You can adjust the beam edges to get either a hard or soft look. As for the gel frame holders, you can put accessories in the two slots and use the quick - release retainer on top. For maintenance, keep the lens clean with a soft, dry cloth. Avoid using harsh chemicals as they might damage the anti - reflective coating. Also, store it in a dry and safe place when not in use to prevent any damage.