From the data above, Top - Bottom + 1 = 3456, Right - Left + 1 = 5184 The finished dimensions (eg, JPG) from this Canon are 5184x3456. I think that’s so that ‘edge effects’ due to demosaicing algorithms, etc, can be trimmed away, or maybe it has something to do with stabilization. Both produce raw files a few pixels larger than the ‘finished’ dimensions produced by the camera (eg., the JPG dimensions). I have two raw file types on-hand: A CR2 from a Canon T3i and a ORF from a Olympus OM-D E-M5 mark II. You can crop the image in RawTherapee if you wan’t it smaller, though why would you. But this number is not special or holy in any way. Every raw image contains one or more embedded JPEG images. The metadata contained in your image reflects the size of something, but of what? Probably of the size of the embedded JPEG image. Some programs don’t handle them well and so crop them off which makes the image a little smaller others, like RawTherapee, do handle them well and don’t need to waste them (or crop less of them off). The image size discrepancy depends on how the demosaicing algorithm handles the information from the sensels (photosites) around the edges of the sensor. But these photosites are not pixels, and the data from them needs to be translated to arrive at what we called a pixel. The sensor contains a certain number of photosites, this number does not change. ![]() Your starting assumption, that your “raw files are 4928 x 3264”, is incorrect.
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