I am new to K2 and have a problem when displaying the image for an item. Here are my settings:

Item: The Item View options Image size is set to Inherit from Category.
Category: The Item View Options Image Size is set to XSmall (I have tried every setting)

No matter what setting I try and change in the Category (or even if I override this in the item) it makes no difference to the image size. The image is being displayed at a whopping 100px × 107px (scaled to 1,140px × 1,220px)

In the parameters, I have set the sizes as
XSmall - 100
Small - 200
Medium - 400
Large - 600
XLarge - 900

I am very confused and really need help.

Can anyone assist?

This must be a very common question for all you seasoned K2 people?