![]() ![]() The lowest luminance is limited by noise. Thus, if a bright object is rendered to the maximum digital value (for example, 255 for an 8-bit image), an even brighter object will not get a higher digital value, and the information is lost. The highest luminance that can be reproduced is limited by clipping. ![]() The dynamic range of a camera is defined by the contrast between the highest luminance that can be reproduced and the lowest luminance that can be reproduced. (The complete IE test methodology can be found here.) The measurements they perform are defined in the ISO14524 and ISO15739 standards. The analysis consists of checking how the camera renders the gray patches. The chart consists of gray patches that show a well-defined and regularly re-measured luminance (in unit cd/m2). Image Engineering (IE) uses a special transparent test target to measure dynamic range. How Image Engineering Tests for Dynamic Range We’ve broken the list into two categories: the dynamic range achieved at a camera’s base ISO as well as the widest dynamic range they can achieve irrespective of ISO. In this list, we’ve gathered up the test results from our lab partner, Image Engineering, to rank cameras by how many stops of dynamic range they provide when shooting still images. While camera makers frequently tout the dynamic range they can achieve in video, they’re typically mum about the dynamic range of their models when shooting stills. There are plenty of variables that go into still image quality but dynamic range is arguably one of the most important. This article, first published in December 2018, was updated on May 8, 2019. ![]()
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