BBC65是前BBC 59号测试图的新版本。它的开发是为了满足简化的工作室测试图的需要，只在最短的时间内提供日常的日常相机阵容所需的信息。

　　在设计图表时，选定的阵容级别已被限制在需要获得最佳平衡的重要中心区域。测试图使用与BBC64彩色相机灰度图表相同的踢脚板结构，并具有中央“超级黑色”，　分辨率测试卡用于调整耀斑校正器。闪光校正调整的灵敏度通过背景亮度增加，这是测试图BBC64的两倍。

　　包括黑色轻轻的中央条纹，以显示由于闪光和其他原因而在黑色附近的阴影效果的样本。该设备可以在匹配这些参数可能不同的相机时，实现黑电平平衡的最佳设置。

　　大面积的中性灰色将清楚地显示任何可能存在的“白色”阴影错误。

　　　分辨率测试卡BBC测试图65被视为与全范围灰度测试图BBC64的补充，当需要检查从黑色电平到峰值白色的完整信号偏移时，必须使用它。

　　背景反射率：34%“白”：60%

　　深灰色：7%黑色：1.5%

　　超级黑相对于白色水平超过100：1

　　施工

　　安装在22mm挡板上的测试图组件，全部凸起安装，以防止损坏边缘。塑料盖板提供额外的保护(类似于BBC64)。

　　BBC65放置在场景中心的照明支架上，并调整相机曝光，使中心的白色60%步进和大黑色电平参考符合正常的波形监视限制。然后调整色彩平衡控制，以在所有相机上实现最佳色彩平衡。 BBC65设计用于与需要非常接近的颜色匹配的测试图BBC61A“肉碱参考”一起使用。

　　The BBC65 is a new version of the former BBC No. 59 test chart. It was developed to fulfill the need for a simplified studio test chart giving only the necessary information for routine day-to-day camera line-up in the shortest possible time.

　Resolution test card　In designing the chart, the selected line-up level have been confined to the important central area where it is necessary to obtain optimum balance. The test chart use the same baseboard construction as the BBC64 Color Camera Gray Scale Chart and features a central “Super Black“ for the adjustment of flare correctors. The sensitivity of flare correction adjustment is increased by a background brightness which is twice that of test chart BBC64.

　　The central strip of black flick is included to display a sample of the shading effects near black level due to flare and other causes. This facility enables the optimum setting of black level balance to be achieved when matching cameras which may differ in these parameters.

　　The large area of neutral gray will clearly display any “white” shading errors that may be present.

　　The BBC Test Chart 65 is seen as complementary to the Resolution test card full-range gray scale test chart BBC64 which must be used when it is required to examine the complete signal excursion from black level to peak white.

　　Background reflectance: 34% “White”: 60%

　　Dark gray: 7% Black: 1.5 %

　　Super Black; over 100: 1 relative to white level

　　CONSTRUCTION

　　Test chart components mounted on 22mm block-board with raised mounting all round to prevent damage to edges. A plastic cover sheet provides additional protection (similar to BBC64).

　　A BBC65 is placed on a lighting stand in the center of the scene and the camera exposures adjusted so that the white 60% step in the center and the large black level reference conform to the normal waveform monitor limits. Color balance controls are then adjusted for optimum color balance on all cameras. The BBC65 is designed to be used in conjunction with the test chart BBC61A Flesh Tone Reference when very close color matching is required.