Automatic Bracketing Exposure and HDR Merging: Using Sony α6700 and Lightroom Classic as Examples
Explain the model-specific behavior of single-shot bracketed exposure on the Sony α6700, as well as the HDR merge steps recorded in the official Lightroom Classic documentation; no promise of dynamic range gain or ghost-free output is made.
What is Auto Exposure Bracketing
The Single Bracket of the Sony α6700 takes multiple photos in the order of base exposure, darker, then brighter; you can choose the exposure difference and the number of shots, and select the desired photo after shooting. This explanation is limited to single-shot bracketing on the α6700. [G-HDR-01]
Check the Actual Exposure Parameter Changes on the Camera
The α6700 manual states that in manual exposure mode with ISO set to AUTO, bracketing exposure is achieved by changing the ISO; if a fixed ISO is selected, it is adjusted via shutter speed. This behavior is limited to the models and modes described in the manual. [G-HDR-02]
Merging Exposure Sequences in Lightroom Classic
In Lightroom Classic, select the photos with different exposures, use Photo → Photo Merge → HDR, or press Ctrl+H to open the merge preview. Enable Auto Align if shots were handheld and there is slight movement between frames. If translucent ghosting appears in the preview, you can start reducing ghosting from Low and then try higher levels based on the preview; if there are no ghosting artifacts, enabling it is unnecessary. After clicking Merge, Lightroom Classic creates a DNG. [G-HDR-03]
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