The Orton Effect was originally developed by Michael Orton in the mid-1980s and uses 2 variations of the same exposure to give a scene a dream-like glow while still holding onto fine details.
Although there are multiple ways to achieve this kind of look I recently came across a great youtube video by Michael Shainblum explaining his recipe:
Give your images some character and glow using the Orton Effect in Adobe Photoshop. Subscribe to my newsletter to keep updated on tutorial and workshops http://eepurl.com/bBFenf Check out my website and pages for more. http://shainblumphoto.com/ https://instagram.com/shainblumphotography/ https://www.facebook.com/shainblumphoto
Applying this to one my own images gave a subtle but pleasing outcome:
