Thumbnail quality versus image type (v1.96?)

[PSHRutPark]

Hello Pierre,

Since you are working on v1.96 I think it is timely that I mention a problem/inconvenience that I have experienced for some time when generating thumbnails of new images.

For the thumbnails of NEF files to show any editing (eg cropping) that has been performed on the NEF image the Options/Browser/Thumbnails/Appearance "Use Embedded thumbnails" needs to be set to ON. This results in a high quality thumbnail showing edits. This option is also good for TIFFs.

However the same setting for generating thumbnails for JPG files results in very poor quality thumbnails. As a result, I have to continually change the "Use Embedded thumbnails" option depending on what file type I'm working with.

My question is: would it be easy to implement a "Don't Apply to JPGs" sub-option under "Use Embedded thumbnails" . This would be very useful.

Thanks

PETER

[xnview]

You have bad quality for embedded thumbnail in your jpeg files?

[PSHRutPark]

You have bad quality for embedded thumbnail in your jpeg files?

Yes. Here are screen captures of JPG images to illustrate:

Use Embedded OFF




Use Embedded ON



I have tried changing thumbnail size to see if that has any affect and it doesn't.

PETER

[xnview]

You have bad quality for embedded thumbnail in your jpeg files?

Yes. Here are screen captures of JPG images to illustrate:

Strange, which thumb size do you use? Could you send me a sample (for example the last picture file on your screenshot)

[PSHRutPark]

You have bad quality for embedded thumbnail in your jpeg files?

Yes. Here are screen captures of JPG images to illustrate:

Strange, which thumb size do you use? Could you send me a sample (for example the last picture file on your screenshot)

128 x 128

Emailing the requested image now (to "contact" at ...).

Thanks

PETER

[xnview]

Strange the embedded thumbnail in your file has a very bad quality...
If you use 128x128, you can enabled 'Create thumbnail from original ...'

[PSHRutPark]

Strange the embedded thumbnail in your file has a very bad quality...
If you use 128x128, you can enabled 'Create thumbnail from original ...'

Unfortunately 'Create thumbnail from original ...' doesn't make any difference. Even if I increase the thumbnail size to 150x150.

What was the size of the "internal" thumbnail of poor quality in the image I emailed you?

Thanks

PETER

[xnview]

Strange the embedded thumbnail in your file has a very bad quality...
If you use 128x128, you can enabled 'Create thumbnail from original ...'

Unfortunately 'Create thumbnail from original ...' doesn't make any difference. Even if I increase the thumbnail size to 150x150.

Do you have used 'rebuild thumbnail'?

What was the size of the "internal" thumbnail of poor quality in the image I emailed you?

160, but with poor quality...

[PSHRutPark]

Do you have used 'rebuild thumbnail'?

160, but with poor quality...

Yes, I did use rebuild.

Increased the thumbnail size to 161 and good quality thumbnails are produced!

Thanks.

PETER

PS How do you find out the internal thumbnail details. XnView?

[xnview]

PS How do you find out the internal thumbnail details. XnView?

I've checked the thumbnail info