P: Incorrect Error Message during Copy as DNG operation with Apple ProRaw DNG

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@Rikk Flohr: Photography,

The bug here is that when you import an Apple Proraw with the option Copy As DNG, the Proraw is correctly converted to a new DNG and imported, but LR gives an incorrect error message:

Note that the menu command Library > Convert Photo To DNG will correctly "convert" an Apple Proraw to a new DNG and not issue that error message.

"The new PS CR feature to remove reflections from shooting through glass gives error message that this applies only for RAW files"

You should file a bug report about this in the Camera Raw forum:

https://community.adobe.com/t5/camera-raw/ct-p/ct-camera-raw?page=1&sort=latest_replies&filter=all&lang=all&tabid=bugs

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LR Classic does indeed treat Apple Proraw files as true raws.  The bug is with LR's Copy As DNG.  It correctly imports the Proraw and "converts" it into a new DNG, as it should, but it then issues that incorrect message.  You can ignore the message or click Don't Show Again.

Apple Proraw photos are already in DNG format, stored as linear raw. So there's no need to use Copy As DNG -- a simple Copy will produce the same result. When you use Copy As DNG, it makes a copy of the original Proraw, a new linear-raw DNG.  Note that you can do the menu command Library > Convert Photo To DNG, and that will also make a DNG copy of a Proraw.

To demonstrate that LR treats Proraws as true raws, import one with the Add, Move, or Copy option and go to Develop:

The Profile popup menu shows other raw profiles (e.g. Adobe Color), and the Temp slider has the Kelvin scale rather than the -100..+100 range for non-raws. You can invoke Enhance > Denoise on it, which you can't do for non-raws.

On the one sample Iphone 14 Pro Max Proraw I tried above, the Auto button makes modest but noticeable changes: