image handler and zen 1.3.8

Can someone give me direction on my image issue, installed image handler on zen 1.3.8 all works fine but for some reason my images are sizing funny please look a this link https://www.suzannecoxdesigns.com and check some of the images on the braclets link, I do not know how these images are getting so small. Is it because of the image setting in admin area? Is it because of the way the images shot and sized? What would be the proper way to size the main image uploaded to the product, 800x600 or what, I need some direction here have read the post but no clear solution.

I have found that with IH2, there is no need to use the _MED and _LRG image folders anymore. I just load all my large images into the images folder and let IH do the rest. I don't name them xxx_MED.jpg or xxx_LRG.jpg (just xxx.jpg).

My large images are roughly the same size as yours (360 wide X 550 tall).

Then, in ADMIN>>>CONFIGURATION>>>IMAGES, I enlarge the size of the Product Info - Image Width to about 210 and the height to 275.

I do not understand what you mean when I look in the admin area I see those folders, should I delete?

It is the image on the products page that is so small the others are good any advice on how to reslove?