Image brightness changing upon upload Image brightness changing upon upload
 

News:

CPG Release 1.6.26
Correct PHP8.2 issues with user and language managers.
Additional fixes for PHP 8.2
Correct PHP8 error with SMF 2.0 bridge.
Correct IPTC supplimental category parsing.
Download and info HERE

Main Menu

Image brightness changing upon upload

Started by dleewo, September 03, 2004, 10:53:12 PM

Previous topic - Next topic

0 Members and 1 Guest are viewing this topic.

dleewo

I've just started playing with CPG today and I noticed that images I upload seem to display much brighter than the ones I originally uploaded.

E.g, I have an image that I resized to 600pixels wide.  If I upload it and display it with Coppermine, it is much brighter than if I display the original local file in a browser.

Thinking it might be a color-space issue, I made sure to set the JPG color space to sRGB, but that didn't help.

If I right-click on the image in Coppermine and save it and then display that in a browser, that image is also displayed much brighter.

Is some kind of processing done on images when they are uploaded, e.g, does Coppermine try to do any auto-levels, or something similar?  If so, can I disable that?

Derek


Joachim Müller

post direct (deep) links to the files you're refering to.

Joachim

dleewo

Here is the IMG link from the HTML source:

<img src="albums/userpics/crw_0936_f6.3_640s_iso200.jpg" width="600" height="400" class="image" border="0" />

Is that what you were looking for?

Here is the original image that I just FTPed to the root of my website for comparison:

http://www.photosbyderek.com/crw_0936_f6.3_640s_iso200.jpg

Interestingly, if I go straight to the Coppermine image via:

http://www.photosbyderek.com/gallery/albums/userpics/crw_0936_f6.3_640s_iso200.jpg

The image is displayed fine.  Maybe something in the "IMG SRC" link is cause the image to be changed? The class?

dleewo

Please disregard this....it turns out to be a browser caching issue.  I had made the image darker and uploaded a new one (deleting the previous image), but when I reloaded the web page, IE displayed the original image.

Sorry for wasting your time......

kegobeer

Do not send me a private message unless I ask for one.  Make your post public so everyone can benefit.

There are no stupid questions
But there are a LOT of inquisitive idiots