PHOTOSHOIP HELP …….?

As soon as saving document in illustrator, photoshop requests quality(from 0 to be able to 12).
it is possible to difference if we help save same document with O scale in addition to 12 (while photograph dimension along with megapixels are generally same for both scales).

Used to do some experiments with this, found simply no difference throughout image high quality however, image dimension decreased 1 was all-around 3 Mb within 12 size and a different was 523 Kb with 0 Quality)

if people zoom the particular pictures in 0 quality you obtain some pixel at this time there.
in 16 quality have a very good zoom to the next pictures,