Posted 20 hours ago

Olympus M.Zuiko Digital ED 40-150 mm F4-5.6 Lens, Telephoto Zoom, Suitable for All MFT Cameras (Olympus OM-D & PEN Models, Panasonic G Series), Black

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It’s superfast on both of the cameras used in the test. Fast focus is essential for me because my subjects are rarely still, and catching the static moments seen in the pictures above took a degree of concentration – animals will sometimes only pause for a split second and I like to grab key moments as they happen. It’s also wonderfully accurate and better than the standard quality tele zooms I’ve been relying on so far. The autofocus slows down slightly in very dim light indoors, but not to the extent where it would bother you. This is quite a feat for a lens of this type. The Olympus 40-150 F4 Pro is a wonderful lens that sensibly fills the void between the top-end Olympus 40-150mm F2.8 Pro and the budget-friendly Olympus 40-150mm F4-5.6 R.

Again, compare that to an equivalent DSLR lens like the Canon EF 70-300mm f/4-5.6 IS II USM (notwithstanding the additional size and weight from mounting that lens to a DSLR body) and this is the smallest and lightest 70/80-300mm lens we've ever used. Summing this section up, the OM System 40-150mm F4 PRO lens is easy to use, easy to carry and delivers good performance across the board. OM System 40-150mm F4 PRO M.Zuiko Hands-on Review Summary This compact telephoto zoom is an excellent addition to the OM System Then there’s that constant aperture. At telephoto, the Olympus 40-150 Pro’s larger F4 aperture is twice as bright as the F5.6 aperture on the cheaper Olympus F/4-5.6. And since you must use faster shutter speeds at telephoto to avoid camera shake – it does make a difference. So the "40-150mm f4-5.6" kit lens would be more accurately labeled a "43-135mm f4-6.3" lens. Still a bargain for the price, but some truth in labelling would be nice. And the recorded EXIF data on focal length and exposure with this lens will be somewhat off." It has an optical formula comprised of 19 elements arranged in 9 groups, including two aspherical, two ED, one Super ED and one HR elements.Overall, the Olympus 40-150mm F4 Pro is better by every measure except price and weight. And if you’re outdoors, you might feel more confident using the IP53-rated F4 Pro. That said, you could write off the cheaper lens 4-times over for the price of one Olympus 40-150 F4 Pro. OM-S 40-150mm F4 Pro vs Olympus 40-150mm F2.8 In terms of features, the M.Zuiko Digital ED 40-150mm F4.0 Pro is simpler than some of the the bigger, faster Olympus Pro lenses. Chromatic aberration is the lens' inability to focus on the sensor or film all colours of visible light at the same point. Severe chromatic aberration gives a noticeable fringing or a halo effect around sharp edges within the picture. It can be cured in software.

Of course, size is not everything (not always). If you’re looking to shoot moving subjects in light conditions – the larger and brighter Olympus 40-150mm F2.8 Pro will get the better shot more often. The OM System M.Zuiko Digital ED 40-150mm F4.0 Pro is capable of producing quite nice sunstars when stopped-down to f/22, as shown below, although the lens is susceptible to flare when shooting directly into the sun, even with the supplied lens hood fitted. Olympus E-M1 Mark III with OM System 40-150mm F4 PRO M.Zuiko lens at 70mm (140mm equiv.), F5.6, 1/1250s, ISO 200. There's some light distortion evident in photographs taken with the 40-150mm; some barrel (bloated) distortion less than 70mm, and pincushion (squeezed) distortion between 70mm and 150mm. There is a nice point of parity just shy of 70mm where there is essentially zero distortion.In-camera corrections remove distortion from JPGs, and Adobe Lightroom already has a profile to correct Raw shots. If you use a different processor, you might see some pincushion distortion when you zoom in, but that's pretty easy to remove. Olympus E-M1 Mark III with OM System 40-150mm F4 PRO M.Zuiko lens at 117mm (234mm equiv.), F4, 1/20s, ISO 200. OM System OM-1 with OM System 40-150mm F4 PRO M.Zuiko lens at 117mm (234mm equiv.), F4, 1/160s, ISO 16000.

The scale on the left side is an indication of actual image resolution. The taller the column, the better the lens performance. Simple. But if 150mm is long enough and you typically shoot in good light or static subjects in any light, the tiny Olympus 40-150mm F/4 Pro might be all the lens you need.

In case you missed it, the Olympus 40-150mm R measures just 63.5 x 83mm – which shorter than a soda can –and weighs a mere 190g –which is just over half the weight of a can of soda.

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