I bought this for my Leica D-Lux 5, the screen of which is unusable in bright sunlight (yes, we have had a few short periods this summer!). It works beautifully. OK you wouldn't want to focus with it, but then you can't focus with a standard 'compact' camera viewfinder anyway. I can use it with my glasses off or on, the dioptric adjustment has a good range. Was a bit nervous when I opened the box as it says it is only for use with the Panasonic camera, but the other reviews are right. It looks and works fine on the Leica and is a lot cheaper: the info display at the bottom is also easy to read. I like the button which switches between screen and viewfinder, so it will remain permanently on my camera now.