Short telephoto lenses usually display some distortion, and some can be measured here, but at -0.01% barrel it is as near to zero and perfect drawing as could be wished for. It can be cured in software.Īpochromatic lenses have special lens elements (aspheric, extra-low dispersion etc) to minimize the problem, hence they usually cost more.įor this review, the lens was tested on a Lumix G6 using Imatest. Severe chromatic aberration gives a noticeable fringing or a halo effect around sharp edges within the picture. Olympus M.ZUIKO DIGITAL ED 30mm 1:3.5 Macro MTF ChartsĬhromatic aberration (CA) is the lens' inability to focus on the sensor or film all colours of visible light at the same point. The edges do not quite match this, but are very good from f/3.5 to f/16, again dropping to just fair at f/22 as diffraction takes hold. Diffraction reduces this to very good at f/16 and just fair at f/22. Sharpness at the centre is excellent from f/3.5 through to f/11. Zuiko Premium 30mm f/3.5 Macro ED Performance This makes for a powerful slightly long standard lens, in all respects except of course a large, bright aperture. We are given the greatest freedom, though, with the lens's ability to focus from infinity all the way down to ultra-close macro seamlessly. However, in practice, it proves to be very convenient and it does lend itself well to the shooting of portraits. Lens construction is 7 elements in 6 groups, with 1 Aspherical ED (Extra Low Dispersion), 1 DSA (Dual Super Aspherical) and 1 Aspherical element.Īs mentioned, 30mm (60mm equivalent) is slightly unusual for a macro lens – most would be 50mm or 100mm in 35mm-equivalent terms. Most macro lenses stop at 1x magnification (1:1). To be fair, the absence of these features may not impact greatly on general macro shooting and the extra magnification is very welcome. Unfortunately, there are no distance scales and no depth of field scale, so some useful information is sacrificed to give us this ultra-compact form. There is no hunting.įocusing is down to 0.095m, a maximum magnification of 1.25x and a working distance of 14mm from the front element. The AF system is fast, accurate and locks on very positively. Nothing else adorns the lens as all functions are controlled by the camera body. There is no facility to tweak the focusing point in AF mode, a feature that can prove to be advantageous. The large manual focus ring is electronic in operation and very smooth. The front element is not so recessed that it would be redundant. No lens hood is provided, which is a pity as it is always a desirable accessory for any lens. The filter size is 46mm, which is in keeping with the overall size of the lens. The front element is also tiny and we can see the 7 bladed, rounded diaphragm quite clearly. It weighs in at a very modest 128g and although it may be tiny it is also obviously well made using high-grade plastic materials. The lens can only be described as compact, and as such, it is ideal wherever it is desired to keep equipment to a minimum. Zuiko Premium 30mm f/3.5 Macro ED Handling and Features Let's have a look in more detail and see how the lens handles and performs, using the Lumix G6 body for this review. 30mm equates to a “35mm format equivalent” of 60mm, quite a useful focal length, if somewhat unusual. This new lens from Olympus is part of the Premium range, a selection of high-quality prime lenses for the MFT system cameras.
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