PI 12 optimizer versus PI 6 -different file size

[bernd888]

Hi,

after using the search function without getting the right answer here my question:

I've two versions of PI installed (PI12 - with 07 update/ PI 6) and found out that the image optimizers are working out different results on the same jpg-image:

Original size: 28182 bytes

after using image optimizer....:
result in PI 12 at 50% quality: 24393 bytes
result in PI 6 at 50% quality: 18430 bytes !!!

That obviously looks like a serious bug in PI 12, doesn't it???

Anyone here who had similiar experiences with the "new" image optimizer?

Is there a workaround or patch for that issue?

regards,
Bernd

[heinz-oz]

PI 6 obviously is using a different algorithm for the compression to the much newer PI 12. I fail to see where that constitutes a "serious" bug.

[bernd888]

PI 6 obviously is using a different algorithm for the compression to the much newer PI 12. I fail to see where that constitutes a "serious" bug.

....since I 've to put my brand new PI 12 back to my "book shelf" and to restart my work on more than 120 images for a web shop with PI 6 now I might be right to call that missing feature for getting comparable compression rates a "serious bug"!

A socalled web optimizer is a good tool to get small file size for an image but what can be called "optimization" if you get almost as big images as you have in the start?

A "new" algorithm which isn't able to create the same benefit for web related work on images as the one of the older version IMHO isn't worth anything.

Amazingly the algorithm produces an new file size of 61kb for an image of 28kb at a 100% rate.
The orginal file size finally then is reached at 72% compression rate....

So again there are only "features" and no "bugs"? That sounds like B. Gates in his best times of MS.

[heinz-oz]

If file size is your only concern, why don't you stipulate the file size you want in the optimizer rather than a quality level?

[bernd888]

..that I just found "no such bug" with the PI 12 on my office pc (XP pro)!???

Sometimes even in small jokes (->the B. Gates quote in my post) there seems to be a tiny piece of truth!

Why? =>cause at home I'm using Gates' MS - Vista (home premium ed.) on a new dual core pc!
It again seems to be Bill Gates fault and might be an unknown Vista/PI 12 conflict!

However, I' ve to alter my question into: "did anyone experience such a bug on a vista machine?"

(...stipulating the file size didn't work either on my home pc...)

cu
Bernd