As for the “equivalency” goofiness regarding aperture, it is indeed a goofy stretch whereby “Fool Frame Fanatics” manage to convince people that you have to double the ƒ ratio of µ4/3rds lenses. This is a significant difference. Note however that while the older Four Thirds lens is essentially at its close-focus point here, the new professional Micro Four Thirds telezoom can focus down to 0.7m. Chromatic Aberrations What surprised me was the performance of the E-M1/40-150 in low-light. Aside from dance show, I also decided to test the lens for the Electric Run 2014 where people participate in a non-competitive marathon at night wearing fluorescent and brightly-lit clothing. I was curious to see how the lens would behave in such a difficult situation where even other photographers with DSLR cameras were having a hard time. Surprisingly the camera and the lens worked really well and I only really found myself in trouble when the scene had a too little contrast or almost no light.

Close focus is a very close 2.3 feet (0.7m), which gives it a reasonable 1:5 maximum magnification. Panasonic body owners need to know that this lens does not have image stabilization; it relies on the camera body to stabilize shots.The Leica DG 50-200mm f2.8-4 is a compact and high quality telephoto zoom for Micro Four Thirds bodies. When mounted on a Panasonic or Olympus mirrorless camera, it delivers a 4x range equivalent to 100-400mm, making it ideal for sports, action, distant portraiture and some wildlife too. The focal ratio may not be constant through the range, but is sufficiently bright to give it the edge in low light and shallow depth-of-field performance over cheaper models. The best part? That exact same lens hood — the LH-76D — also works great with the 40-150mm f/2.8 PRO lens. Plus, it stores on your lens easily.

You should have the impression that I like this lens. I do. I like it an awful lot. Enough so that I’m going to sell my Panasonic 35-100mm f/2.8 and get this one. As I noted above, if a lens tends to stay on your camera more, it’s more convenient, and that extra 50mm and good close focus distance mean that the Olympus was staying on my camera more than the Panasonic.Mylio Photos – Access your photos from anywhere, without the cloud! Easily showcase your photos on-the-go, resolve duplicates, find faces and look for those stunning locations.

The Olympus M.Zuiko Digital ED 40-150mm can be bought on its own, or in a kit with the MC-14, a 1.4x teleconversion lens that goes between the lens and the camera body, as shown in the picture below. Of course, such a lens does come with some built-in downsides. While it’s absurdly light for a zoom of its capabilities, it’s still a big heavy lens by most other measures. Therefore, its leave-at-home factor is higher than the smaller, less capable Olympus 40-150mm F4 Pro. And, of course, the Olympus 40-150mm F2.8 is one of Olympus’s more expensive lenses. The Olympus also maintains a maximum aperture of f2.8 throughout its focal range, and again it’s very usable at this setting. At its maximum focal length of 150mm, the corner performance may not be as crisp as the Leica, but there’s no issues towards the middle of the frame and remember at 150mm the Olympus is essentially one stop brighter / faster too, allowing you to maintain lower ISOs or faster shutters. Olympus M.ZUIKO DIGITAL ED 40-150mm f/2.8 PROThe Olympus M.ZUIKO DIGITAL ED 40-150mm 1:2.8 PRO Telephoto Lens delivers high quality imaging and durable construction to Micro Four Thirds cameras. With a 40-150mm focal length and a constant maximum aperture of f/2.8, this versatile lens is perfect for professionals looking for the absolute best performance from a telephoto lens. Of course, the µ4/3rds image will be 1/4 the area, and if you blow it up to have the same print size as the full-frame image, it will have less DoF. But what you’ve done in that case is you’ve enlarged the pixels — depth-of-field is dependent on reproduction ratio! Which is where the “Fool Frame Fanatics” come up with their DoF goofiness.Offering long reach with an advanced feature-set and optical design, the M.Zuiko Digital ED 40-150mm f/2.8 PRO from Olympus is a versatile 80-300mm equivalent telephoto zoom for Micro Four Thirds mirrorless cameras. As part of the PRO series of advanced lenses, this zoom distinguishes itself with a bright f/2.8 constant maximum aperture for consistent illumination throughout the zoom range to suit working in a variety of lighting conditions. Its optical design makes use of a series of aspherical and low dispersion glass elements to suppress chromatic and spherical aberrations for notable sharpness and clarity, and a ZERO coating is also used to reduce flare and ghosting for high contrast, color-accurate imaging. One thing that I can't test is how does this compare the to the Oly 75-300. I've seen on there that it is assumed that the 40-150+ MC-20 would be better than that lens at 300. @Phocal and some others can make that lens sing, so I'm not sure how cut and dry that would be. I do know that this combo is weather sealed and I will have a very hard time leaving my house without the 40-150 2.8 and the MC-20 is way smaller than toting another lens. The 40-150mm f2.8 has a closest focus distance of 70cm. That’s constant regardless of the focal length so you can get close in at 150mm to produce very shallow depth of field shots.

When fitted to the OMD EM1, the camera and lens combination is beautifully balanced. It feels just right, not just when carrying it around but when you raise the camera to your eye and shift your left hand from the tripod mount to the zoom ring. Surprisingly, it didn’t seem to matter what focal length I chose. 40mm, 70mm, 150mm, they were all excellent corner to corner, and right from f/2.8 (no real need to stop down unless you need DOF). And I mean excellent, as in about the best you can obtain from the 16mp E-M1 sensor. If you nail focus, you have acuity. Excellent acuity. Indeed, in the Imatest charts it basically boiled down to this: The lens performed great wide open and didn’t really change much until I started hitting diffraction limits, at which point I could clearly see the diffraction impacts. That’s pretty much as good as it gets in terms of sharpness. OM System says the 40-150mm f4 Pro is the lightest, most compact 300mm equivalent zoom with a fixed aperture. It weighs just over 13 ounces and, when retracted, is less than four inches long. Indeed, it felt more like carrying a wide-angle prime than a 300mm lens. Of course, much of that weight savings comes from the narrower f4 aperture and the crop factor of Micro Four Thirds that pushes this lens to a 300mm equivalent.For me though, I will be keeping the 40-150 + MC-20 combination even though it's more difficult to get sharp shots, requires more post processing, and is optically inferior. Why would I do this? The first thing a full-frame fanboy, like me, might say about the Olympus 40-150mm F2.8 Pro is that it’s ‘only’ equivalent to an 80-300mm F5.6 lens on a full-frame camera. True enough. Unique