Excerpt: I just bought an Olympus camera, and then wanted a zoom lense, to be able to take more of the photos I envisioned. But, I did not want to have to carry a huge lense. So, I really like this lense. The photos turn out well.
Pros: Consistent Output, Easily Interchangeable, Fast / accurate auto-focus, Lightweight
Excerpt: This is considered to be a 'kit' lens. Kit lenses are generally speaking not very good. Imagine my surprise when I first used this and saw the results. Nothing less than amazing - and considering the price - this has to be the best bang for the buck in M43 lenses. You give up nothing with this lens other than max aperture. Light, fast to focus, and wonderful results.
Summary: I would normally give a lens like this a four star, it is not the sharpest, it is not the fastest AF, but it is a real winner. There is a small amount of vignetting when at 150mm, there is a small amount of chromatic aberration(clearly fixed with lightroom, both of these cases), but all that aside none of it is a deal-breaker. At this price, you will have to make some sacrifices. However, they did not sacrifice the image quality, or the usability.
Summary: For the price, you won't find any other lens as good as this. The aperture is nothing to write home about, and the lens barrel and mount are plastic, but the lens is small and light, the image quality is very good, and the lens focuses very quickly.
Excerpt: Have only had my new Olympus for a few weeks, but I am enjoying getting to the camera and the M.Zuiko Digital ED 40-150mm lens is a nice, clean shooting performer as a basic lens. It has a nice range; clean, crisp shots and very little grain even at the high ISOs. A good starter lens for the OM-Ds or the PEN.
Summary: This lens is a true bargain. Images are sharp and contrasty. It's light weight and reasonably compact for the focal range you get. It focuses fast too on most modern m43 cameras. (tested on EM5 & EPM2) A fantastic lens for gong to the Zoo with the family, kids sports, air shows, etc. The 40mm starting focal length (80mm in 35mm film terms) is good enough for portraits and walking around as long as you have room, like outdoors. Then we get to the price.