I couldn't tell you what it is. Perhaps it's analogue romanticism, or holding a little negative in your hand. But maybe it's the feel of having the camera all that much closer to the subject. Without the hassle of checking all sorts of settings, and especially without the need to check the photo immediately afterwards, the subject is so much closer to you. The photographer can feel one layer closer to being part of their picture.
And those colours. Gosh, those colours. Archipelago islands of thought and image, connected with a name