User blog comment:Ducksoup/The Future of Infoboxes on Wikia/@comment-4088096-20150824221845/@comment-2240397-20150825110237

Hi. We are aware of the super tall image problem. Sometimes the tower-like images tend to endup being super big (for example images of swords or magical staffs). I'd suggest applying max-height in CSS as an intermediate fix.

I'd avoid the tag solution in this case, as knowledge that this particular field hold representative image helps us generate article metadata (for mobile infoboxes, facebook sharing, etc.).