R one of the best lenses for travel photography if you're looking to keep your setup light, compact yet capable. These capable cameras should be solid and well-built, have both the speed and focus to capture fast action and offer professional-level image quality. When you extend the lens for use, that increases in length by less than an inch, making it smaller than the “Plastic Fantastic” entry-level Olympus Zuiko 40-150mm f/4-5.

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As you can see from the 100 percent crops below, with stabilisation enabled you can shoot handheld with the 40-150mm f2. All Olympus Micro Four Thirds bodies employ built-in stabilisation with the most sophisticated five-axis system employed on the OMD EM1.

Once you switch to C-AF, the limitations of the contrast-detect auto focus system employed by Micro Four Thirds cameras become obvious. To prevent heartburn and acid indigestion, take it 30-60 minutes before eating food or drinking beverages that can lead to indigestion. Tiny, lightweight and ridiculously cheap, this lens delivers sharpness way above its pay grade and is simply one of the best bargain optics on the market.

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Ideal for an everyday, walkabout or travel lens, it's equally handy to shoot the wildlife in your back garden or to keep in your camera bag for those occasions when you need a bit of extra range.Contrary to a lot of comments, I am very pleased with the image quality I get at full zoom and wide open with mine. The lens is also balanced on my camera and even fits nicely on the much smaller E-M5 range of cameras. There is little difference in edges sharpness with the lens stopped down, although sharpness in the centre does reach excellent levels at f/8 at this focal length. This gave me a chance to perform before and after tests, and I’m pleased to report a visible improvement. To wit, a contrast-detect AF system has no way of knowing if the subject is moving towards or away from the camera, and regularly has to make adjustments that cause it to go completely out of focus before becoming sharp again.