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The AbelCine Focus Bowtie Chart and Insert Slate is designed for high-resolution cameras and lenses that require analysis tools that are more informative than the legacy charts commonly used today. The inherent limitations of star-like patterns make it extremely challenging to determine accurate, repeatable measurements of any cameras and lenses that resolve 2K, 4K and higher. This chart designed by AbelCine solves this challenge, and provides many additional evaluation capabilities for camera techs, camera assistants and equipment owners. This chart also features an insert slate on the reverse, it is suitable for use with dry erase markers. The Focus Bowtie Chart includes: Discrete, Logarithmically Progressed Frequencies – for accurate, easy-to-read focus of all focal lengths and all resolutions. Colors – provides colors correlating to the six primary and secondary axes on a vector scope, as well as skin tones. Insert Slate – silkscreened insert slate on back, suitable for use with dry erase markers. Features: • Measures 9.15" x 7.15", 23.2cm x 18.2cm • Designed for checking focus in any environment • Ideal size for transport in AC bag or accessory case Using the Chart: With the chart in frame, as you turn the focus barrel on the lens and reach the point of optimum focus, the image will “pop,” with the circular patterns becoming more defined. You’ll see greater detail, and the image will be sharper and have higher contrast. When the lens is optimally focused, you will see high contrast in the coarser patterns, and maximum detail in the finer patterns. Also, the image as a whole will show a minimum of chromatic artifacts, which are seen as colored fringes on the edges of black lines. The band of colors under the focus pattern can be a handy reference for color matching between scenes or between cameras. The colors are designed to represent the 3 primary and 3 secondary colors, as well as flesh tones.
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