[TYPO3-dev] JPEG quality

[Ernesto Baschny [cron IT]]

Hi,

if you have "color" problems in your jpegs, it is most likely not
related to quality settings, but due to the fact that they come from a
source using CMYK color spectrum (as oposed to a RGB spectrum).

This usually leads to a different result when converted and scaled (by
TYPO3) to a RGB jpg to be used on the Web.

Solution is to convert the files using Photoshop et al to jpg using a
proper color profiles, before converting them to RGB.

For an "quick start" check out this instructions:
http://www.ws-online.de/software/cmyk_rgb.html

Cheers,
Ernesto

Thomas "Thasmo" Deinhamer schrieb am 31.08.2010 15:31:
> Hello folks!
> 
> Just beeing curious; to what value do you set the
> JPEG quality in the install tool for your projects?
> 
> I tend to have a default of 55 and raise it up to
> 75 if needed.
> 
> The problem we have with clients is that they sometimes
> complain that images (especiall RED ones) look "awful"
> in their oppinion. Unfortunately this is true to a
> certain degree - red images/jpegs look not as good
> as other colors.
> 
> This ends up in setting the quality to 90 or even higher
> to satisfy the customer - but imo this really bugs me!!
> 
> How do you handle this? How to you argument a higher
> compression ratio?
> 
> Thanks for your oppinions,
> Thomas