Saturday, October 16, 2010

JPEG Noise & Artifact

In my previous article "JPEG Hell!" I show you how high JPEG compression in Paint Shop Pro can really damage your image file.

One of my young reader argued that he cannot see much damage when his image is being compressed in Photoshop, even at a very high compression / low quality setting.

He wonder if I can "show" him that JPEG in Photoshop really damage his original file!

Your wish is my command ;)

To do this demonstration I selected this "grab shot" I captured in K.L., 1998.

I was shooting a street market scene in Petaling Jaya, Malaysia, this kind Malay family let me used their veranda for an overhead view.

While I was shooting, at the corner of my eyes I saw her with the baby... quick shot with my EOS1n and 80-200 at about 200mm.

What can I say? Just pure innocent.

I was surprise how well the ISO 400 Kodak Ektapress negative film rendered her flawless complexion so well!

The colour negative was scanned with my Nikon Coolscan 4000 ED.

Now, back to our JPEG noise demo...