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Projection Distance & Size information
The table below shows the image diameter from a 35mm Slide Projector with various focal lengths, for various throw distances.
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| 35 | 60 | 70 | 120 | 150 | 180 | 250 | |||||||||||
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4 | 4'0" | 2'4" | 2'0" | |||||||||||||
| 6 | 6'0" | 3'6" | 3'0" | ||||||||||||||
| 8 | 8'0" | 4'8" | 4'0" | 2'4" | |||||||||||||
| 10 | 10'0" | 5'10" | 5'0" | 2'11" | 2'3" | ||||||||||||
| 15 | 8'9" | 7'6" | 4'5" | 3'6" | 2'10" | ||||||||||||
| 20 | 11'8" | 10'0" | 5'11" | 4'7" | 3'9" | 2'8" | |||||||||||
| 30 | 17'6" | 15'0" | 8'11" | 7'0" | 5'8" | 4'1" | |||||||||||
| 40 | 23'4" | 20'0" | 11'10" | 9'4" | 7'7" | 5'7" | |||||||||||
| 50 | 25'0" | 14'10" | 11'8" | 9'6" | 7'0" | ||||||||||||
| 60 | 30'0" | 17'10" | 14'1" | 11'5" | 8'5" | ||||||||||||
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The table below shows the image diameter from a VSFX/Cadenza/Patt 252 Projector with various focal lengths, for various throw distances.
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| 2½" | 3" | 4" | 5½" | 6" | 8" | 10" | ||
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6 | 12'0" | 9'3" | 5'9" | 4'0" | 3'4" | 2'4" | 2'1" |
| 8 | 16'0" | 12'4" | 7'8" | 5'4" | 4'6" | 3'2" | 2'10" | |
| 10 | 20'0" | 15'5" | 9'7" | 6'8" | 5'7" | 3'0" | 3'6" | |
| 12 | 24'0" | 18'6" | 11'6" | 8'1" | 6'9" | 4'9" | 4'3" | |
| 15 | 30'0" | 23'0" | 14'4" | 10'1" | 8'5" | 5'11" | 5'4" | |
| 20 | 40'0" | 30'0" | 19'2" | 13'5" | 11'3" | 7'11" | 7'1" | |
| 25 | 50'0" | 38'5" | 23'1" | 16'9" | 14'1" | 9'11" | 8'10" | |
| 30 | 60'0" | 46'0" | 28'8" | 20'2" | 16'10" | 11'10" | 10'8" | |
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