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So I forgot to switch my camera to M mode; my bracketed images are taken in auto exposure mode. Can I still stitch them to HDR in PTGui Pro?

April 26, 2017Auto bracketed camera exposure Forgot images mode Switch

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So I forgot to switch my camera to M mode; my bracketed images are taken in auto exposure mode. Can I still stitch them to HDR in PTGui Pro?

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You can trick PTGui into recognizing your images as bracketed exposures by modifying the exposure data in the Image Parameters tab. If you took sets of 3 bracketed exposures, copy the exposure times of the first three images into the remaining images. The result should be a repeating sequence, e.g. 1/25, 1/100, 1/400, 1/25, 1/100, 1/400, and so on. Switch PTGui Pro to Advanced mode to make the Image Parameters tab visible. However, the result will not be perfect. The automatic exposure has caused brightness differences between neighbouring images. The blender is able to make gradual adjustments, but it does not actually correct the exposure differences. Therefore we recommend to go back and take the bracketed images in manual exposure mode.