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Vertex Back Focus Test Chart

Vertex Video Accucharts

Vertex Back Focus Test Chart


With an overall size of 16.5" x 10" with an image area measuring 9" x 12" (23 x 30.5 cm). For Precise adjustment of back focus in video cameras, essential for proper focus tracking with zoom lenses. Chart consists of converging wedge "star" patterns in center and at four corners of the field.

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