If you're looking for the field-angle versatility of a zoom ellipsoidal with the affordability and design of a smaller fixture, then you're looking for the Source Four Jr. Zoom. Great for application on the small stage or in clubs, retail events and industrials, the Source Four Jr. Zoom boasts rugged ETC fixture construction and all the celebrated precision optics of a Source Four.
Use this calculator to determine either the size of the circle of light, how far away you should place the light, or which degree of lens you should use. Put in two of the values and then hit calculate to find the third value.
Values can be in feet or meters, but both values must match.