![]() Overexposure (OE) indicator will show you exactly what areas of the shot are blown out and in which color channel(s) it happened (best if used in channel view). RawDigger 圆4 displays the real histogram of the raw data, which greatly differs from the in-camera histogram and histograms presented by most of the raw converters. Support for new cameras is usually implemented within few weeks after raw samples become available. RawDigger 圆4 supports nearly all cameras that have raw capability. ![]() Instead, it allows you to see the data that will be used by raw convertors. RawDigger 圆4 doesn’t alter the raw data in any way. In essence, it is a microscope of sorts that lets you drill down into raw data. You can see the value of Baseline Exposure in the "BLE" field in EXIF panel of FastRawViewer.įor your convenience, FastRawViewer Manual comes with the installation (main Menu - Help - "PDF Manual") and is fully searchable.A tool to visualize and examine pure raw data as the camera has recorded it. Adobe are referring to this calibration game w hile explaing the need for Baseline Exposure. ![]() The less "noisy" is the system, the more headroom in highlights could be afforded except mostly for "extended" ISO: for extended lo w ISO the calibration is offset to leave less room in highlights compared to regular ISO speed settings, for extended high ISO the opposite may take place there are other exceptions, too. Camera designers often deviate from this generic recomendation ensuring even more headroom to protect the highlights (thus the myth of cameramakers "overstating ISO speed"). Thus the generic calibration for ra w is about 1 2. T he standard suggests close to 3 EV headroom (the "distance" bet w een the midpoint and clipping). The EV0 point is based on our kno wledge of calibration of in-camera meters, for each individual camera model. The most common practice with cameras, in our experience, is to render the midpoint (the raw data number resulting from exposing according to a simple metering, like spot or centre-average) as 117 (assuming they use sRGB and Adobe w ith simple gamma 2.2, here is the supporting calculation: 0.18^(1/ 2.2)* 255 = 116.9).įastRawViewer determines dynamic range down from clipping point, clipping point being determined either by the explicit number in the file metadata ("camera provided highlight limit" in FastRawViewer Preferences -> "Image display" -> Exposure tab, this may be a bit conservative), or by recognizing the histogram shapes characterisical to clipping - please have a look at This allows inter-camera comparison 'in same conditions', but overestimates DR range for the case when full resolution is used (due to large pring and/or cropping)
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