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I've been told it's best to crop an image in RAW (rather that in Photoshop as a JPEG image) because doing it this way you don't loose any quality.
I have always cropped an image in Photoshop after a RAW conversion.
What I would like to know is:- when I crop an image in RAW how do I keep the image at the ORIGINAL size . . . . or do I re-size it in Photoshop?
Depends on your workflow.
If you're converting RAW to JPEG then reopening in Photoshop you're losing quality when you resave as JPEG.
If you transfer from the RAW converter to Photoshop by way of an intermediary lossless file (like the temporary TIFFs that DPP produces) then it doesn't matter where you crop.
Which RAW converter do you use? If you're using Photoshop to load the RAW then it doesn't matter - there isn't a JPEG involved til you save one when you've finished.
You can't keep the image at the original size and crop unless you invent some new pixels to replace the ones you just cropped off. You'd do that by resizing in Photoshop and interpolating existing pixels.
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Depending on which version of PS you have, you can open the RAW file as a 'Smart Object' (hold down the 'shift' key and the 'Open Image' button changes temporarily to 'Open Object'). Opening the file in this way keeps the RAW version editable and you can do what you like with it until you come to save in whatever file format you wish. The main benefit aside from retaining editing versatility is a non-destructive workflow.
If you are talking about keeping the original size in RAW, nothing changes in RAW. When you reload the RAW file at a later date it will show the crop but all you have to do is click on the crop tool, hit escape and you are back where you started.
Malcolm
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