A slider exists to select custom zoom, and in most filter tabs, a magnifying class can be used to view portions of a picture at higher magnification. In some filters, an "edit map" can be used to view which areas which will be affected from those filters. There is also a filter-guide wizard to help in going through a workflow of the different filter tabs.
A slider exists for custom zoom selection, and in most filter tabs, a magnifying class can be used to examine specific parts of an image at higher magnification. In some filters, an "edit map" feature allows viewing which areas will be affected by the filters. Additionally, there is a wizard guide to help through the workflow involving different filter tabs.