1. Since the release of the EL line back in 2000 There have been a total of 3 major changes or versions.
2. The first generation didn’t have HD glass but it was very close. It also didn’t have a fast focus mechanism that eventually changed in 2004. In 2006 we came out with Easy to Clean outer coating. In 2010 we redesigned the entire line and called it the EL Swarovision, the major changes were field flattener lenses for edge to edge clarity, bigger eyepieces for more eye relief, a closer focus up to 4.9ft., All new rubber armor coatings, and True HD glass. In 2015 we made the Swarovision line even better and called it the field pro. We basically improved every accessory that people complained about. The major changes were a new and easier neck strap system, a locking diopter, hinged objective covers, all new field bag, neckstrap, and covers. There was also a change to the rubber armored coating.
3. Swarobright is a prism mirror anti reflective coating optimizes color transmission to 95%, Swarodur is a scratch resistant coating, Swarotop anti reflective coating which allows more light to be transmitted. Swaroclean allows for easy removal and cleaning of tree resin or mineral residue from the lens. Swarovision is an optical system, HD Glass, Field flattener lenses, Extended eye relief and all the coatings make up Swarovision. Field Pro Package is the new accessory upgrade.
