Image upload quality

Hi all,
When my users are uploading JPEG images on the forum using the attachment control panel, the resulting image quality is often very poor, have a look:
http://www.rebirthoflight.net/portail/f ... ue_176.jpg
I had the same problem with the photo album when I firstly installed IM but in this case the control panel allow us to define accurately the maximum pictures properties (size in pixels and bytes) so I managed to solve the problem there by increasing the different size a lot.
Unfortunately In the attachement mod control panel we can only set a maximum size in byte for all type of files to upload, images or not, and I set it up to 20Mb which should be strongly enough for a jpeg image of about 300Ko, unfortunately, the resulting uploaded image quality is still very poor <img>
Any help would be apprecied!
Cheers
When my users are uploading JPEG images on the forum using the attachment control panel, the resulting image quality is often very poor, have a look:
http://www.rebirthoflight.net/portail/f ... ue_176.jpg
I had the same problem with the photo album when I firstly installed IM but in this case the control panel allow us to define accurately the maximum pictures properties (size in pixels and bytes) so I managed to solve the problem there by increasing the different size a lot.
Unfortunately In the attachement mod control panel we can only set a maximum size in byte for all type of files to upload, images or not, and I set it up to 20Mb which should be strongly enough for a jpeg image of about 300Ko, unfortunately, the resulting uploaded image quality is still very poor <img>
Any help would be apprecied!
Cheers