One thing I've always admired about The Legend of Zelda series of video games is how fairly modern technology and even groundbreaking futuristic technology is intertwined into a fantasy setting so well. Inspired by the Pictograph Box from Majora's Mask that's essentially a primitive handheld greyscale camera, I want to do something similar with my world.
In real-life the camera didn't exist way until the 19th century, many a century after the dark ages came and passed, and even then it was long before the advent of the handheld camera or colored pictures. I'm not quite sure if I want my fictional culture having colored cameras yet, but I definitely do want them to have handheld ones that are capable of printing photos.
In terms of other technological advancements they've made, they're pretty much what you'd expect. Melee weapons are the go to form of armaments, but they do own very primitive firearms. They have the knowledge to create such contraptions such as catapults and trebuchets, but they have no knowledge of electricity outside of magical electricity.
They make up for their scientific simplicity with vast arcane knowledge. Magic is very integral to their culture, as well as their day to day lives. They could use their magical aptitudes to enchant or imbue physical objects with things like lights, or maybe even alter the physics of items.
Maybe the camera could be less of a technological marvel and more of a magitech creation. Dunno how it would be able to print photographs though.