Photoshop

Can you be more specific about how it happens? For example, how many megapixels is the raw file, and how many megapixels is the “drastically reduced” version that comes back from Photoshop?

Normally, that shouldn’t be happening. The only major change should be that it can no longer be raw. The single data stream in the raw file must always end up in an multi-channel (RGB) Photoshop document, even if the raw file is contained as a Smart Object within the new document. That expansion, by the way, will always result in a larger file size, which is unavoidable if you want Photoshop (or any other non-raw photo editor) to be able to work with the image. If you have set up Lightroom Classic to send files to Photoshop at 16 bits per channel, then you should expect the file size increase to be even higher.

But nothing about that process will reduce the number of megapixels. If the number of megapixels is actually being reduced, the cause is something else, which we can probably figure out. But first we need to know more, like exactly how much the width and height in pixels is being reduced during the round trip. Where in Photoshop and Lightroom Classic do you see that the number of megapixels was reduced?

in the future, to find the best place to post your message, use the list here, https://community.adobe.com/

p.s. i don't think the adobe website, and forums in particular, are easy to navigate, so don't spend a lot of time searching that forum list. do your best and we'll move the post (like this one has already been moved) if it helps you get responses.

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