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SKU
7750
MPN
7A9

Putora Sharpness Indicator Type 7A9

Questions about this product?
  • Resolution targets from 1 to 9; 10 to 97 lines per millimeter
  • Basic building block of the Sharpness Indicator System
  • Check sharpness and back focus of any optical system
Why is the Putora Sharpness Indicator called "The Magic Chart" by some users? The 7A9 chart has resolution targets from 1 to 9; 10 to 97 lines per millimeter when set up at a standard distance of 60x the focal length of the lens being tested. The frequency circles on the chart that donメt resolve will disappear like magic into the gray background making them invisible. The 7A9 Chart is the basic building block of the Sharpness Indicator System. It can be used independently or with the full size background. The 7A9 is useful with film, television, and still optical systems. At 10" x 10" it's a convenient addition to your equipment kit. Use it solo to check sharpness and back focus of any optical system. Use it to check critical focus on a production set. Instructions are included with the chart.
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SKU 7750
Brands ZGC
MPN 7A9
WARNING: This product may expose you to chemicals which are known to the State of California to cause cancer. For more information go to www.P65Warnings.ca.gov
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