Types of Stage Lamps:

Other Lighting Aspects:

Spot light



Profile Spot Light

Variations on this lamp include fixed beam and variable beam. Fixed beam will have a fixed position lens listed by degree of projection angle. SAS currently has 10, and 40 degree from Colortran and 19, 26, and 36 degree from ETC (Source Four model). Variable beam profile spotlights are referred to as Zoom Ellipsoidal. Moving the lens changes the beam projection angle from large to small (15 to 35 degree)

Use: Used for special highlighted features of the set or an actor. This lamp provides a great amount of control of the light beam.


  • Pan (right and left) (Twisting post on the bar clamp.)
  • Tilt (up and down) (Twisting knob on the side of the lamp’s hanging bracket.)
  • Beam size (Change of lens position for large or small beam with the Zoom Ellipsoidal.)
  • Beam size / shape (Paddles can be pushed into the path of the light beam to produce a square shape and reduce the size of the beam.)
  • Beam size (Changed by adding an iris)
  • Beam focus (Change from soft to hard focus by changing lens position on both fixed and variable beam lamps.)

Accessories available:

  • Gel / Gel frame.
  • Iris. (Controls the circular size of the beam.)
  • Gobo / Gobo paddle. (Metal or glass insert that allows a pattern to be projected)
  • Top hat. (Metal cover that fits into the gel frame holder that cuts light spill and adds focus to the beam.
  • Doughnut. (Metal frame that fits into the gel frame holder with a small opening for the beam. The small opening cuts light spillage and adds focus to the beam.

Very Brief History:

The first spotlight was built in 1904 by Louis Hartmann. It had a 5" lens, called a baby lens, and was about 50 watts. As spotlights evolved, they began to be called Baby Spots. In 1933, the first ellipsoidal reflector spotlight was built.

For more information, go here.

Fixed Beam Profile Spot
Variable Beam Profile Spot