![]() ![]() Unlike when buying regular lenses, it’s not really about wide-angle coverage or telephoto reach. Focal lengthĪ crucial consideration when choosing a macro lens is the focal length. They’re generally not much larger, heavier or more expensive, and you’ll avoid any heartache if you upgrade to a full-frame camera body in the future. However, you’re often better off buying a full-frame compatible macro lens. There are several macro prime lenses on the market that are designed exclusively for APS-C format cameras. It’s a similar effect to the way that crop-sensor cameras boost the effective telephoto reach of a lens. ![]() There’s a bonus if you’re using an APS-C format camera with a 1.5x or 1.6x crop factor, as you’ll fill more of the image frame with smaller objects, giving greater ‘effective’ magnification. Taking things to the extreme, the Canon MP-E 65mm f/2.8 delivers a monstrous 5.0x maximum magnification, but it’s notoriously difficult and fiddly to use, and generally best avoided.Īs we’ve mentioned, a 1.0x magnification factor reproduces an object at full life size on a camera’s sensor. ![]() But if you’re buying a lens for close-up photography, a macro prime that gives a full 1.0x magnification is the best choice. Zoom lenses, and even some prime lenses with a ‘macro’ badge, give a greater magnification of around 0.5x. Most standard zoom lenses give a maximum magnification factor of about 0.3x. The key question is: what makes a ‘good’ macro lens? Let’s take a look at the specifications and features that are important to consider. You’re therefore filling the entire image frame with something very small and, once the captured image is displayed on a screen or printed on paper, the degree of enlargement is enormous – a macro lens can reveal almost microscopic levels of detail, and make tiny bugs look like giant alien invaders. That might not sound particularly impressive, but bear in mind that an APS-C format image sensor is only about the size of a standard postage stamp. ![]()
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