Nidelva river through Trondheim Norway

Nidelva river through Trondheim Norway
by Saaru Lindestokke                

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At a high level, this is an EXIF value that represents the APEX average luminance value of a scene. Luminance, in this case, is basically the intensity of light travelling travelling towards the camera. This is why it's typically positive for a daytime shot, because there is much more light present, reflecting off of the surface of the subjects. The EXIF ...


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I suspect operator error is always much more likely than a hardware defect. Possibly the lighting is NOT the same in both instances. You did not mention the lighting, so it seems reasonable to first of all to assume this is the problem. Any darker scene will require more exposure. Tell us how the lighting is known to be the same light level in both cases? ...


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One other point, is the camera spot metering or using some other metering? It could be that the "brightness" meter is focusing on one part of the picture than the rest or related.


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What it looks like from your comments is that the software you are using is not taking into account your display and simply sending the image-data (either from the embedded JPEG or after RAW interpolation) as is. The result is that images look dark which just says that your display has a darker tone-curve than is usual. Firefox and Chrome correct for this ...


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You can try this: http://www.granitebaysoftware.com/products/productgbd.aspx It claims to do what you need (Although I have no experience with it) by normalising a sequence as either an Adobe plugin (Premiere or After Effects) or as a standalone application.



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