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Dynamic range (or luminosity range) of the scene is the ratio between the largest and the smallest values of luminosity in the scene. Dynamic range of a sensor is the ratio between the largest and the smallest signal it can generate. When the dynamic range of the camera is not enough to capture the dynamic range of the scene, shadow or/and highlight details are lost (clipped).
1. Take a sequence of continuous photographs. 2. Transfer the photographs from the camera to PC. Photographs from a mobile phone can be transferred via Bluetooth or Infrared connection. 3. Launch PhotoAcute Studio. Load the photographs into PhotoAcute Studio. Click "Open" button to open the pop-up file browser or drag-and-drop the files to PhotoAcute Studio window. Loaded photographs are listed on the left panel. Marked photographs are shown tiled on the right, if the "Tile" box is checked. |
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Click "Start" button to open the processing options dialog and start processing.
By using the advanced weighting technique, PhotoAcute Studio is able to restore shadows and clipped highlights from the photographs taken in exposure-bracketing mode. It produces the image that could only be taken with the camera that had much wider dynamic range.
This feature becomes especially handy for objects photographed on back-lit background (e.g. window, alight snow, direct sunlight), or scenes that have important details in the shadow.
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| highlights captured, shadows lost | shadows captured, highlights lost | both shadow and highlight details are visible |
Usage: Dynamic range expansion is turned on/off by ticking the corresponding checkbox in the processing options dialog -- Expand dynamic range. It is recommended to use brightness equalization in conjunction with this mode.
5. Examine the result.
PhotoAcute Studio provides you with an easy and effective tool for comparing the result to the original images. Once the processing is successfully completed, PhotoAcute Studio displays one of the original images and the resultant image side by side. When you drag one of the images (by mouse), the other one is moved correspondingly. You can drag single image without moving the other one by pressing [Ctrl] key while dragging.
6. Save the result.
Select the photograph you want to save from the photographs list. Click the "Save" button.