JPG imbedded in the RAW and any Windows 10 RAW viewer

When I view a Canon RAW CR2 image the image will change slightly after a few seconds. It may darken, it may become more saturated.,

Is Win 10 initially displaying the RAW or the imbedded JPG?

chuckmiller wrote in post #19253094
When I view a Canon RAW CR2 image the image will change slightly after a few seconds. It may darken, it may become more saturated.,

Is Win 10 initially displaying the RAW or the imbedded JPG?

It is my understanding that the JPG preview embedded in the RAW is what is being viewed, not a realtime RAW conversion; the preview camera created for itself using the Style chosen, so photographer could see the taken photo.

What camera's files are you seeing this observation?

I believe the RAW image extension by Microsoft lets you directly view the RAW image. Download from https://www.microsoft.​com …ge-extension/9nctdw2w1bh8.

John from PA wrote in post #19253114
I believe the RAW image extension by Microsoft lets you directly view the RAW image. Download from https://www.microsoft.​com …ge-extension/9nctdw2w1bh8.

But a RAW file is merely the amount of response of each single-color sensel, it means nothing until the neighboring responses are merged into a Bayer interpretation of RGB pixels which results in the JPG preview.

Wilt wrote in post #19253135
But a RAW file is merely the amount of response of each single-color sensel, it means nothing until the neighboring responses are merged into a Bayer interpretation of RGB pixels which results in the JPG preview.

Yes.

chuckmiller wrote in post #19253094
When I view a Canon RAW CR2 image the image will change slightly after a few seconds. It may darken, it may become more saturated.,

Is Win 10 initially displaying the RAW or the imbedded JPG?

It will be showing the embedded JPEG to start with, then replacing it with it's own thumbnail rendered from the RAW file.
Adobe Bridge does the same thing, as do most image viewers.

Wilt wrote in post #19253135
But a RAW file is merely the amount of response of each single-color sensel, it means nothing until the neighboring responses are merged into a Bayer interpretation of RGB pixels which results in the JPG preview.

Does that mean the Windows RAW viewer can't do that merging?

Capn Jack wrote in post #19253153
Does that mean the Windows RAW viewer can't do that merging?

...not unless Microsoft had built a 'RAW convertor' into Windows!...far simpler and less expensive simply to display the embedded JPG preview put there by the camera. Adobe originally had to buy the software that did RAW conversion, rather than write it from scratch for LR and ACR.

Wilt wrote in post #19253155
...not unless Microsoft had built a 'RAW convertor' into Windows!

And that what that link allows you to download. It is a RAW convertor that becomes part of Windows. Why do you feel it isn't one?

Capn Jack wrote in post #19253156
And that what that link allows you to download. It is a RAW convertor that becomes part of Windows. Why do you feel it isn't one?

And if most raw files contain a full size JPEG conversion of the image, which is used to preview the file on the camera's LCD panel, why would Microsoft choose instead to get a RAW conversion code of its own and embed it in Windows, to do what is aleady done (in fact, other companies offer RAW viewers on the Microsoft store)?!

In fact, the linked extension description says:

"By installing the package, you will be able to view thumbnails and metadata of supported raw file formats right in Windows File Explorer or view images in the Photos app."

Wilt wrote in post #19253159
And if most raw files contain a full size JPEG conversion of the image, which is used to preview the file on the camera's LCD panel, why would Microsoft choose instead to get a RAW conversion code of its own and embed it in Windows, to do what is aleady done (in fact, other companies offer RAW viewers on the Microsoft store)?!

Are you saying the other companies only show the JPEG? They don't do a RAW conversion?

Wilt wrote in post #19253159
And if most raw files contain a full size JPEG conversion of the image, which is used to preview the file on the camera's LCD panel, why would Microsoft choose instead to get a RAW conversion code of its own and embed it in Windows, to do what is aleady done (in fact, other companies offer RAW viewers on the Microsoft store)?!

In fact, the linked extension description says:

"By installing the package, you will be able to view thumbnails and metadata of supported raw file formats right in Windows File Explorer or view images in the Photos app."

I see you edited your post- I'm glad you read the link, where they describe how they use open source software, and where they get the code
Follow that link and it takes you to:
https://www.libraw.org​/

Microsoft uses this to open files in the Photos app, so it doesn't just give you thumbnails.

Capn Jack wrote in post #19253166
Are you saying the other companies only show the JPEG? They don't do a RAW conversion?

Re-read my last post...Microsoft says what their extension does, "view thumbnail"

Wilt wrote in post #19253172
Re-read my last post...Microsoft says what their extension does, "view thumbnail"

I did. And it does more, too. Please read their link. It also drives the photos app.

Capn Jack wrote in post #19253182
I did. And it does more, too. Please read their link. It also drives the photos app.

While LibRaw states, "LibRaw is a library for reading RAW files from digital photo cameras (CRW/CR2, NEF, RAF, DNG, MOS, KDC, DCR, etc.; virtually all RAW formats are supported). It pays special attention to correct retrieval of data required for subsequent RAW conversion." Microsoft does not imply it uses that open source library fully. It explicity said "view Thumbnail and metdata" and no more. Based upon that very explicit statement, I think it is presumptious to assume they use the open source for more.