Many photographers have delayed their entry into the world of interchangeable lens cameras (ILCs) because of one missing feature — viewfinders. Coming from the world of SLRs, doing without a viewfinder as part of many ILC configurations can cause much chagrin.
This is where accessories like the LVF2 enter; add-on electronic viewfinder purchases for ILCs. In this case it's for the Panasoniconly, and is not backwards compatible with any of the previous Panasonic cameras.
As the LVF2 is connected via the accessory port, it has to sit on the hotshoe to work. So, you can't connect any other accessory such as an external flash while using the viewfinder. It sits neatly at the top of the camera and doesn't add much extra bulk as it only weighs 36 grams.
There's a small button that switches between the viewfinder and the LCD screen, but apart from that no other physical buttons appear on the unit. One design omission is the lack of automatic sensor to switch between the viewfinder and screen when you put your eye up to the level. It's not a deal-breaker, and some might prefer the ability to switch manually, but we would have liked to see the option included nonetheless. The LVF2 offers a 100 per cent field of view and is higher resolution than the GX1's LCD screen, at 1.4 million dots.