I am having a competition in which I have to submit images in RAW format. But I have already clicked some images with Nikon D3200 in JPEG.
Is there any way to convert JPEG to RAW format in Photoshop or any other similar software.
Answer
RAW is not (or minimally) processed image data from camera sensor. JPEG is processed image data. Typically, raw-files from modern cameras have 12-14-bit per pixel which means up to 16384 values (for more details see Michael Clark's comment). JPEG can have only 256 luminance values per RGB channel. This means that jpeg contains much less data than a corresponding raw-file. So no, there is no way to convert a jpeg to raw.
Technically, it's possible of course to convert jpeg data format to raw data format (like it's possible to convert a jpg to png or gif) but this will not make a raw-file and the organizers of competition will surely see that it's not a true raw file. However i have never seen such a tool and doubt that any exists.
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