I often get confused with all the new mirrorless lenses. If you are like me, the new Mirrorless Lenses iPhone app will help you find all currently available mirrorless lenses and provide you with some the basic specs. The app is available for free on iTunes:
The Mirrorless Lenses app allows you to browse the full range of mirrorless interchangeable lens camera (MILC) lenses. It allows you to browse all the camera and lens manufacturers based on the lens mount. This includes Micro Four Thirds, Sony E, Samsung NX and Four Thirds Mount lenses.
This app allows you to add lenses to a Favorites page so you can keep an inventory of what lenses you own or which lenses you want to have on your wish list.
When you bring up the page for an individual lens, it shows you a picture of the lens as well details for the lens. Lens details include the type of lens, focal length, maximum and minimum apertures, filter size, dimensions and weight.