The calculation of resolution test uses HYRes software, and the calculation will be done in two parts: vertical resolution and horizontal resolution.ĭigital camera assessment is different from other products. Resolution test uses ISO 12233 resolution test chart and adopts unified shooting angle and environment. Resolution test chart is the standard proof which can provide aided testing for vertical resolution and horizontal resolution of actual shooting. Image focus (focus adjustment) is maintained at all focal lengths (zoom-in) and constant distance from object by means of back focal distance adjustment. With unchanged optical focus adjustment and shortest focal length adjust the red and blue pick- up tube until optimum focus is achieved.If necessary optimize by alternating with optical focus adjustment. With shortest focal length and divergent focus adjust the pick-up tube in W-channel until optimum focus is achieved. Set optical focus at greatest focal length. 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.
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. It shows a 72 sector Siemens star on a white background. The YE0121 test chart is designed for the adjustment of camera lenses and checking back focal distance. Sineimage YE0121 Sector Star Test Chart (72 cycles) Transparent chart Siemens star target for the adjustment of camera lenses and checking back focal distance
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