HDR using a single exposure is usually called psuedo HDR, because(as already said) there is no more digital information in a single image psuedo HDR as there is in a single image.
You could easily forego the convoluted process of creating the various exposure compensated images from the single exposure .. and then merging again, and simply process in the normal manner (dodging/burning)! It's the same information in the file that's being used.
Most modern digital cameras have the ability to recover at least 3 stop of 'lost' information in the SOOC raw file. That's usually 1 stop in the highlights, and 2 stops in the shadows.
Most commonly made multi exposure HDR images are created with the aim to capture more than this extra 3stops of dynamic range that the camera can't reveal.
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HDR using a single exposure is usually called psuedo HDR, because(as already said) there is no more digital information in a single image psuedo HDR as there is in a single image.
You could easily forego the convoluted process of creating the various exposure compensated images from the single exposure .. and then merging again, and simply process in the normal manner (dodging/burning)! It's the same information in the file that's being used.
Most modern digital cameras have the ability to recover at least 3 stop of 'lost' information in the SOOC raw file. That's usually 1 stop in the highlights, and 2 stops in the shadows.
Most commonly made multi exposure HDR images are created with the aim to capture more than this extra 3stops of dynamic range that the camera can't reveal.