what are they called?

[ErectedGryphon]

This is my favorite camera, really expensive though

 

[Rifleman1776]

This is my favorite camera, really expensive though

Good point. I'm still waiting for a definition of "quality".
BTW, since I'm new here, I must confess that I do, occasionally, stick a needle in things to stimulate discussion.
My brag about my big prints, BTW, taken with a Sony DSC-H2, hasn't been addressed. They shout QUALITY.

 

[ErectedGryphon]

Maybe this will answer the "quality" question, all 12Mp sensors are not equal.

Digital Camera Sensor Sizes: How it Influences Your Photography

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[Rifleman1776]

Maybe this will answer the "quality" question, all 12Mp sensors are not equal.

Digital Camera Sensor Sizes: How it Influences Your Photography

.

That is an excellently written article and articulate explanation. Thanks for the post.
Specifically, I'm looking for an explanation of why one has, or hasn't, better final result quality. Somebody look at my earlier post about my two big enlargements and please present a logical explanation of where I lost out on 'quality'.