高精度36-補丁動態范圍測試圖高級定制測試圖卡

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產品型號36-patch

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深圳市賽麥吉圖形處理有限公司

經營模式：經銷商

商鋪產品：18條

所在地區：廣東深圳市

聯系人：董艷（SEO）

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產品簡介

高精度36-補丁動態范圍測試圖高級定制測試圖卡，此測試圖被制造用于調制好密度范圍、低噪音、精致細節下檢測高精度LVT電影錄音過程。

詳細介紹

高精度36-補丁動態范圍測試圖高級定制測試圖卡

此圖有36個低噪音密度補丁，密度范圍是一個從約0.1密度級開始到zui大3.2密度級。

此測試圖被制造用于調制好密度范圍、低噪音、精致細節下檢測高精度LVT電影錄音過程。

高精度36-補丁動態范圍測試圖高級定制測試圖卡

Details

This chart has 36 low-noise density patches with density steps of approximay 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 byStepchart, 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.

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