A double exposure is literally one picture exposed on top of another, usually a completely different subject and composition. The “ghost” effect in this case is intentional.
What you and the guy above you are talking about is a high dynamic range (HDR) photo, where you take two or more exposures of the same scene with bright and dark areas that couldn’t both be properly exposed in the same exposure, and combine them to achieve the desired exposure throughout.
OP’s photo looks like a more traditional double exposure of two different cityscapes at night, but it’s also only double exposed in certain areas. Probably post-processing, rather than done in-camera.
A double exposure is literally one picture exposed on top of another, usually a completely different subject and composition. The “ghost” effect in this case is intentional.
What you and the guy above you are talking about is a high dynamic range (HDR) photo, where you take two or more exposures of the same scene with bright and dark areas that couldn’t both be properly exposed in the same exposure, and combine them to achieve the desired exposure throughout.
OP’s photo looks like a more traditional double exposure of two different cityscapes at night, but it’s also only double exposed in certain areas. Probably post-processing, rather than done in-camera.
I see. Thanks for the explanation.