Okay here is how resizing works below as its more like size and dimensions.
Thumbnail image max width and height in pixels
THIS WILL BE THE SIZE OF THE THUMBNAILS
Max allowable image width in pixels
MAX WIDTH IS JUST THAT ANY IMAGE WIDER THAN THIS WILL BE RESIZED DOWN TO THIS MAX WIDTH
Max allowable image height in pixels
MAX HEIGHT IS JUST THAT ANY IMAGE WIDER THAN THIS WILL BE RESIZED DOWN TO THIS MAX HEIGHT
Trigger medium graphic height and width
An uploaded larger than this will create a medium image of this size.
JUST AS IT SOUNDS THE SYSTEM WILL CREATE A MEDIUM IMAGE. THIS IS USEFUL FOR USERS WITH LARGE MAX SETTINGS SO AS NOT TO SPAN A PAGE OUT
Quality setting for image resizing/thumbnails?
THIS DETERMINES THE LEVEL OF COMPRESSION/QUALITY. MORE QUALITY IS LESS COMPRESSION LESS QUALITY IS MORE COMPRESSION 70 is default
If photo upload width or height exceeds maximums, resize upload down to max dimensions?
THE MASTER SWITCH SHALL WE SAY 