Imatest高精度36-补丁动态范围测试图
高精度36-补丁动态范围测试图36-Patch Dynamic Range Test Chart此图有36个低噪音密度补丁,密度范围是一个从约0.1密度级开始到最大3.2密度级。此测试图被制造用于最佳密度范围、低噪音、精致细节下检测高精度LVT电影录音过程。This chart has 36 low-noise density patches with density steps of approximately 0.1, for a density range of at least 3.2 (density from base to base + 3.1 minimum). A nearly circular patch arrangement ensures that vignetting has minimal effect on results. A CSV reference file with actual densities will be supplied. The chart has an active area of 197x235 mm (7.75x9.25 inches) on 203x254 mm (8x10 inch) film.It also contains slanted edges in the center and corners with 4:1 contrast for measuring MTF. The edges have an MTF50 = 16 cycles/mm, which is about 3 times better than the best inkjet charts. Registration marks make the regions easy to select. A neutral gray background helps ensure that the chart will be well-exposed in auto exposure cameras (compared to charts with black backgrounds, which are sometimes strongly overexposed).It is supported by Stepchart, Multicharts, Multitest and can be used with the Dynamic Range postprocessor if several manual exposures are available. Dmax = 3.4 is sufficient for camera phones and digital cameras with small pixel sizes, but high-end DSLRs generally have higher dynamic ranges (and also manual exposure), which makes them well suited for Dynamic Range.This chart is produced with a high-precision LVT film recording process for the best possible density range, low noise, and fine detail.LVT Targets with reference files are guaranteed to remain accurate for one year from first use. After this time the targets can be returned for re-calibration and will be returned with a new reference file.1、厂家货源正品官方直售,公司生产周期短,出厂严格检测,货品品质保障,可通过国家计量院计量。2、关于尺码机身和包装尺寸为手动测量,由于测量工具和测量方法不同的因素,会存在1cm误差,但是不用影响运输和使用。3、关于颜色本店产品都是实拍图片,但是由于不同显示器分辨不同以及色温和对比度差异有所不同。4、关于客服可以通过阿里旺旺随时联系我们,如果旺旺回复不及时,也可以拨打我们的热线电话 张工:13310057377 (技术与销售一体,直达客户需求)5、关于售后我们将提供完整的售后服务,包括15天退货,正品保证,交期保障等等。6、关于发货本店根据货物及客户需求,尽可能选择快捷方便的物流运输服务,一般情况发顺丰快递!