On 01/19/10 22:51, Liam R E Quin wrote:
> On Tue, 2010-01-19 at 22:38 +0100, yahvuu wrote:
> [...]
>> II. Range of actually useful values for IJG quality value
>>      For GIMP's target users less than half of all possible settings
>> are useful:
> possibly - I've often used values as low as 35% or sometimes lower.
> "The sweet spot" depends hugely on your image and your purpose -
> consider providing a "lowsrc" alternate image for low bandwidth
> Web users for example, or a thumnail.
> Most of the preview images on www.fromoldbooks.org are saved at 75%
> (usually with "smoothing" to reduce artifacts a little)
>>       95
>>        .  no-go: just wastes disk space -- ever heard of XCF?
>>      100
> Actually I use 97% a lot, and 100% too -- because I want jpeg format,
> not some application-specific thing that won't work for most users.
> Export is about interchange, the end product, you shouldn't ever use
> jpg for a file you're going to edit again, and you shouldn't normally
> use xcf for interchange unless you know they're using (a compatible
> version of) GIMP...

Once a user starts to use jpeg they have to decide what to do with 
"quality" setting. Bigger number = better quality is not too hard to get 
your head around. A bit of experimenting quickly reveals what works best 
for a particular task.

You quickly realise what ranges don't fit your needs and focus on those 
that do. End of story.

I see no use what so ever in creating some new, grouped setting in its 
place. This would essentially involve exactly the same learning process 
and reduce control and compromise results.

>> III. Parameter Triaging
>>       The "Subsampling" parameter is more important than its current
>>       position inside the "advanced parameters" section suggests.
> Yes - in particular it affects colours, especially reds.
> Liam

I agree , this setting could come out be more visible. It's annoying 
having to dig in there just to check what it is set at.

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