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Ellipsoidals

Common Ellipsoidal Beam Sizes 
 When calculating the beam diameter of a given fixture you multiply its Multiplication Factor (MF) X the throw distance. The MF for many common beam spreads and lens sets are listed below. Please note these are not precision measurements, only approximate measurements. Example for a 5 fixture at a distance of 50' you would multiply 50 X .09 to find a beam diameter of 4.5'.
8" Lens
6" Lens

S4/Leko

Phoenix/ Pacific

MF #

Beam at 10'

Beam at 25'
Beam at 50'
Beam at 75'
Beam at 100'
5
5
0.09
4'-6"
6'-9"
9'-0"
8" X 14"
6" X 22"
10
10
0.17
8'-6"'
12'-9"
17'-0"
8" X 8"
6" X 16"
19
20
0.32
3'-2"
8'-0"
16'-0"
24'-0"
6" X 12"
26
30
0.46
4'-8"
11'-6"
23'-0"
6" X 9"
36
40
0.64
6'-5"
16'-0"
4.5" X 6"
50
50
0.93
9'-4"
90
 
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