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Eider GranadaThe product and the service was excelent. it came to colombia without many problems (just aduana problems)..supplier 100% recomenmed -
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Back Focus Optical Resolution Test Chart SineImage YE0220 For Camera Lenses
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xProduct Details
| Brand | SineImage | Usage | For Resolution And Sharpness Measurements |
|---|---|---|---|
| Light Source | Can Be Equiped With Light Box | Standard | ISO12233(2014) |
| Model | YE0220 | Diameter Center Mark | 5 Mm |
| High Light | camera resolution chart,camera lens test chart |
||
Product Description
SineImage YE0220 Back Focus Test Chart for Camera Lenses
| Material | Film or HD photographic paper |
The Sineimage YE0220 back focus test chart is designed for adjustment of camera lenses and checking back focal distance. It consists of a large Siemens star in the center an four smaller ones positioned in the corners of the test chart.
With the aid of a low transmission filter and by means of low level lighting make sure that the camera is not over modulated with the aperture in the open position.
a) Optical focus: Adjust focus at shortest focal length.
b) Back focal distance (lens): Adjust focus at shortest focal length by regulating lens mechanically with adjustment screw and optimize alternatively with a).
c) Back focal distance (pick-up tubes): If focus varies from channel to channel between greatest and shortest focal length, the individual pick-up tubes must be adjusted mechanically in the optical axis.
1. Select white channel. Set optical focus at greatest focal length. With shortest focal length and divergent f ocus adjust the pick-up tube in W-channel until optimum focus is achieved. If necessary optimize by alternating with optical focus adjustment.
2. With unchanged optical focus adjustment and shortest focal length adjust the red and blue pick-up tube until optimum focus is achieved. Image focus (focus adjustment) is maintained at all focal lengths (zoomin) and constant distance from object by means of back focal distance adjustment.
Standard Transparent/Reflectance Test Chart Size
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Size Picture size(4:3) Picture size(16:9) Chart Size(16:9) A280 280*210mm 280*157.5mm 365*305mm D240 240*180mm 240*135mm 320*290mm D280 280*210mm 80*157.5mm 360*280mm - ISO 12233 Resolution Test Chart Size
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Model Specification Size Material NQ-10-50A 0.5X 10x17.8 cm photographic paper NQ-10-100A 1X 20x35.6 cm photographic paper NQ-10-200A 2X 40x71.1 cm photographic paper NQ-10-400A 4X 80x142.2 cm photographic paper NQ-10-800A 8X 160x284.4 cm photographic paper
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