2012/3/23 Liam R E Quin l...@holoweb.net:
On Fri, 2012-03-23 at 21:52 +0100, Olivier wrote:
Considering the quality rating in JPEG as a percentage would mean that
a quality equal to 100 would be perfect, i.e. no loss at all.
Nonsense. A quality of 100% means you have chosen 100 out of a
I've noticed that every time I save an image in GIMP as JPG the quality
slider bar defaults to 85. Even though I keep changing it to 75. If this
numeric value is a Photoshop equivalent like other GIMP features, then 85
is probably a wasted effort. The research* I'm aware of* (note emphasis)
says
On Fri, 23 Mar 2012 20:09:37 +0530, Keith Purtell kpurt...@imirus.com
wrote:
I've noticed that every time I save an image in GIMP as JPG the quality
slider bar defaults to 85. Even though I keep changing it to 75. If this
numeric value is a Photoshop equivalent like other GIMP features, then
On 03/23/2012 10:39 AM, Keith Purtell wrote:
I've noticed that every time I save an image in GIMP as JPG the
quality slider bar defaults to 85. Even though I keep changing it to
75.
That's odd. Every version of the GIMP I have ever used defaulted to
the legacy Photoshop value of 75 for JPG
The quality rate of JPEG is not a percentage, simply a rate between 0 and 100.
To my knowledge, the suggested quality rate is a part of the
photograph. My camera suggests 90, my daughter's camera suggests 93,
and I always decrease it to 85, or export to PNG.
Olivier Lecarme
2012/3/23 Liam R E Quin l...@w3.org:
On Fri, 2012-03-23 at 17:17 +0100, Olivier wrote:
The quality rate of JPEG is not a percentage, simply a rate between 0 and
100.
A number in the range 0 to 100 is actually by definition a
percentage ;-)
That's a weird definition of a percentage!
On Fri, 2012-03-23 at 21:52 +0100, Olivier wrote:
Considering the quality rating in JPEG as a percentage would mean that
a quality equal to 100 would be perfect, i.e. no loss at all.
Nonsense. A quality of 100% means you have chosen 100 out of a
possible 100. per cent means out of 100 in Latin.
I suppose the reason I didn't go the preview route is that I'm a bit
annoyed that GIMP doesn't remember that I've changed that setting to 75
every single time I've made a JPG. Now that you suggest it, I could run a
test and see if GIMP's apparent 85 default really does/doesn't make a
significant
On Fri, Mar 23, 2012 at 4:31 PM, Liam R E Quin l...@holoweb.net wrote:
Maybe it would be less confusing to make the numbers go from 0 to 255 or
something. Then 255 would be 100% of the allowed value.
I can hear the wailing and gnashing of users now: I followed the
tutorial exactly and saved the
Keith Purtell wrote:
I suppose the reason I didn't go the preview route is that I'm a bit
annoyed that GIMP doesn't remember that I've changed that setting to 75
every single time I've made a JPG. Now that you suggest it, I could run
a test and see if GIMP's apparent 85 default really
I've noticed that every time I save an image in GIMP as JPG the
quality
slider bar defaults to 85. Even though I keep changing it to 75. If
this
numeric value is a Photoshop equivalent like other GIMP features, then
85
is probably a wasted effort. The research* I'm aware of* (note
On 03/23/2012 09:20 PM, Liam R E Quin wrote:
every time you load and
save a JPEG file the quality is reduced and information is lost.
Not true... if nothing changes the algorithm is stable (decoded values
get re-encoded to the same values). You lose quality if you recompute
something
* Ofnuts ofn...@laposte.net [01-01-70 12:34]:
On 03/23/2012 09:20 PM, Liam R E Quin wrote:
every time you load and
save a JPEG file the quality is reduced and information is lost.
Not true... if nothing changes the algorithm is stable (decoded values get
re-encoded to the same values). You
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