I added the scrollable collection via storyboard, so it created a scrollview containing a clip containing the collection, and then the collection is a set of customized collectionviewitems. The scrollable view has an option 'zoom', which I've turned on. So zoom is applying to the view of the collection, visually you see the items in the collection get larger / smaller depending on the zoom. So not the image itself, but the collection. There are constraints, relative to leading/trailing, no other constraints on the text.