Olympus 25mm f/2.8
|Focusing distance:||20cm / 7.9in|
|Lens size:||ø64mm x 23.5mm / ø25.2in x 9.3in|
|Weight:||95g / 3.4oz|
|Construction:||5 elements in 4 groups|
Eddie's take on it
If you want a small pancake lens, you have no choice - this is the only one. The only alternatives are zooms and much larger primes.
Image quality is about the same as the 14-42mm kit lens. You get much smaller size and brighter aperture - at 25mm, the kit lens is f/4.7, so you gain 1.5 stops.
It was one of the last lenses Olympus produced for 4/3, and thus not many people bought one. Pair that up with re-surgence in interest in old digital cameras and a larger interest in small, portable lenses, and this becomes a pretty expensive proposition. It was only $250 new, so it has probably lost less value than any other 4/3 lens.
The ubiquitous Olympus 14-54mm f/2.8-3.5 at 25mm is f/3.1, which less than 1/3 of a stop difference, and it takes higher quality pictures, and chances are you can get it cheaper.