I bought this lens with an Olympus PEN E-PL1 for a safari in Tanzania. While I loved my film SLR and lens collection, it didn't fit the trip (film and lens changes in clouds of dust, airport X-rays and nearly 2,000 exposures) so I had to go digital with a single zoom lens. . I decided to buy a Micro Four Thirds system instead of a DSLR, hoping that the compromise between sensor size, weight and price would be good. Total cost was about $1100 ($500 for the camera (with 14-32 lens), $600 for the 14-150mm lens). At Micro 4/3, the effective focal length is twice the nominal focal length, making this lens equivalent to a traditional 28-300mm zoom. I could buy an equivalent DSLR mount and lens for about the same price, but it would weigh over 6 pounds. My combination was about 4 pounds. This was important when most of the filming involved waiting several minutes for the animal to "do" something and there wasn't even room to set up a monopod from the hatch of a safari truck. My biggest concern was the image quality. A 4/3 sensor is about 30% smaller than a DSLR sensor, but still 5-9 times larger than a compact digital sensor. Luckily we were able to do a direct comparison with photos of my daughters. The larger sensor was significantly better at everything - it blows any compact. For example, I was able to get some great shots of a leopard in the shade of a tree from about 200 meters away. That wasn't possible with the compact cameras that we had. In general I am very satisfied. While a 4/3 sensor is clearly not up to the quality possible with a DSLR, it's fine for the serious hobbyist. This lens is our new travel companion.
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