Quality of thumbnails in 'Create Web Page'

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Boo

Quality of thumbnails in 'Create Web Page'

Post by Boo »

I have done a search and couldn't find an answer. One post suggested that the 'Convert always in JPEG' option might be worth trying, but it made no difference.

XnView has some features I like very much - one of which is the creation of a web page index - this is something I do routinely of all my Canon 20D .CR2 RAW files - these pages are purely for my indexing purposes, not publication - I like to see an identifying thumbnail of a decent size and some basic EXIF to hand. I do it this way as a quick reference to shot information, even to image files on other drives and computers.

After some trial and error and creating my own template, I've got XnView to create a web page how I like.

The only thing I don't like is the quality of the thumbnail images themselves - it seemingly creates them from the full res. RAW file and seems to change the basic exposure/brightness to some sort of average - some that were too lightly exposed it has darkened to the extent that all detail has vanished in the areas that were actually correct. I'd prefer it to use the embedded JPEGs to create a thumbnail from, as I set my parameters to get what I want from those as reference and I'd prefer to see an unadulterated version.

These on the left are the untouched low contrast embedded JPEG for such shots and to the right, the XnView version of the web page based thumbnail - which makes it hard for me to judge how the original shot was when quickly previewing a set. Many seem to have been adjusted in this manner - but certainly not all or by the same factor. The thumbnails in the application itself are correct, they're based on the JPEG which is in the preview pane.

Image
Image

Does anyone know it it's possible to make it use the JPEG, or to leave the RAW version 'as shot'. You can make changes in other places, to gamma, WB and the like, but I can't see if for the web page. I've tried the camera RAW options and it doesn't make any difference to the web page thumbnails.

I really like this function, it's faster than doing the same task in my RAW developer that I was doing before and I can use it for several cameras and get the same format of output.
Boo

Post by Boo »

After 31 views and no replies, am I safe to assume then that there is no obvious and immediate fix for this and it's not just me doing it wrong, which was my assumption? I was hoping it was me just missing something obvious.

Which is a real shame as I really like this feature and would have used it daily, but the quality of the generated thumbnails renders the function pretty much useless to me in this format and for this use. I can re-create the thumbnails by another method to slot in to the sub-directory of course, but that rather defeats the object of using it because it's quicker and easier than other applications.

It seemingly does okay with JPEGs, it just doesn't seem to like the RAW files.
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Post by xnview »

Boo wrote:After 31 views and no replies, am I safe to assume then that there is no obvious and immediate fix for this and it's not just me doing it wrong, which was my assumption? I was hoping it was me just missing something obvious.

Which is a real shame as I really like this feature and would have used it daily, but the quality of the generated thumbnails renders the function pretty much useless to me in this format and for this use. I can re-create the thumbnails by another method to slot in to the sub-directory of course, but that rather defeats the object of using it because it's quicker and easier than other applications.

It seemingly does okay with JPEGs, it just doesn't seem to like the RAW files.
Could you send a sample?
Pierre.
Boo

Post by Boo »

Do you mean of an original RAW file?

I could send the first one shown above, as it's slightly over-exposed and shows a dramatic change when exported to a web page with XnView.

I'll put it in my web space and PM you the URL to save filling your inbox as it's over 8MB. The RAW files contain a 1.57MP JPEG preview image and in most viewers, including XnView, it is this that is seen when previewing etc., rather than developing the full res. image from the raw data. If I could create a thumbnail for the web pages using the embedded JPEG without touching the raw data, I'd be very happy. In this instance, I only use a 220px thumb with EXIF as an index, I don't link to the full res images or publish the web pages, it's purely as a source of information for my own use.

The same change in appearance occurs when viewing the image full res., it seemingly accesses the raw data to do so - it takes several seconds - but doesn't seem to render the image as I'd expect if it were created 'as shot'.
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