February 14, 2015
This lens (and the E-M1) has been my first foray into mirrors cameras, and my first step away from over a decade's use of Canon equipment.
To say I'm impressed is an understatement. The image quality, colour rendition and sharpness are fantastic. The focus is silent and lightning quick.
On top of all of this, the build quality and attention to detail are superb; this lens is so nice that it makes look for excuses to use it (as does the 40-150 PRO). I was initially very hesitant to move to Olympus: I had regarded them as a tier two manufacturer, and not in the same league as Canon and Nikon. Boy, was I wrong. I rate the build quality, finish and attention to detail over some of the Canon L lenses I own. The lens is beautifully machined. The focus ring has a nice smooth action in either position, and has a very satisfying 'click' when changing operation.
I really commend Olympus on their PRO series of products: lightweight, fantastic design and quality, and weatherproof. I have been searching for a system like this for years, and have always felt that I'd need to compromise. I have absolutely no complaints with this lineup and cannot wait for more products in the series to be released.
January 07, 2015
Not going to bore you with what hasn't been already been said about how superlative this lens is, because it is. Sharp corner to corner throughout the entire zoom range, comparable to the primes. Color is accurate and well rendered, chromatic aberration and other such things are well controlled. The ability to focus closely really makes this lens apart from its competitor.
I will note that compared to some of the primes, the color saturation is a bit lower, needing a slight boost in post processing to correct.
I use this lens a lot, and enjoy it immensely. The only thing I would keep in mind is that it is neither compact, nor light for a m4/3 body. I the world of APS-C and FF bodies this lens is tiny and light, but relative to its own ecosystem, just be aware that this lens doesn't balance well on the more compact m4/3 bodies.
December 23, 2014
Simply the best lens I've ever owned! Olympus has made a great system even better by adding the Pro Series! Two words in my recommendation, "Buy It!" I can't wait for the other lenses in this series to be released in 2015.
November 05, 2014
I've been using the E-5 with a couple of very nice lenses for the last several years. Thought it would be my last camera, but arthritis decided otherwise. I still use the E-5 for tripod work, but for walking around and handheld work, I just love my new E-M1 camera and the M.12-40mm PRO lens. My photos are tack-sharp, even handheld ones.
Tonight I took some photos off our sundeck - after dark: ISO 200, Aperture f/16, Exposure 60 seconds, focal length 40mm. And yes, on a tripod. I was tickled pink when the streetlights, about 3 city blocks away showed up as beautiful 14-pointed stars. The only part of the photo that is not sharp, is a tree, whose foliage is the kind that moves if you only look at it, let alone if there is even the slightest puff of wind.
This lens is a keeper, and even when I get the longer lens later this month, I think that this one will be my go-to lens.
Thank you, Olympus!
October 06, 2014
I bought my E-M5 for travel photography on my motorcycle adventures. The camera is perfect, and before my latest trip I added this great lens. Space was very limited on this trip, a cross country, off-pavement ride on a small dual sport bike from Tennessee to the coast in Oregon. I kept the E-M5 on with this lens for the entire trip (though I had other lenses) and it was fantastic. Very pleased with the crisp pictures, great color, and terrific auto focus.
I am already planning on selling the 12-50 kit lens and saving my pennies for the 40-150 pro lens. If it is anything like this beauty, I don't know if I will need any other lenses (though I have another telephoto zoom and some primes). Great job!!
September 15, 2014
I’ve been shooting Canon SLR cameras since I was a teenager, but as I get older, weight is becoming more of a factor. This standard range zoom lens is 382g, which is heavy for a Micro Four-Thirds lens, and together with the M.Zuiko ED 75-300mm f4.8-6.7 II, which weighs even more at 423g, is exactly the same combined as the Canon EF 24-70mmf/2.8 L II at 805g. So, I can carry my Olympus PEN E-P5 (420g) with the M.Zuiko 17mm f1.8 (120g), the Olympus FL-300R wireless flash (97g) with a small bounce reflector, and the 2 aforementioned lenses, but still be less than my Canon 5D Mark III (950g) with just one lens.
Moreover, this lens is fast to focus and solidly made. If I ever get the E-M1, it would be just as weather-sealed as my Canon setup. In any case, the combination I commented above makes for a wonderfully light combination to keep in my bag to catch almost anything on a trip. I can even throw in the M.Zuiko 45mm f1.8 (116g) and the M.Zuiko ED 9-18mm f4.0-5.6 (155g) along with a few filters and still be fleet of foot.
Ultimately, photography is about composition and getting the shot off, which I can seemingly do faster with this than my bulkier Canon cameras. For the pixel peepers, it's not quite as good as my Canon lens, but the Canon lens almost 3 times the price, too, and won't cramp my neck or shoulders after a long day.
August 25, 2014
I took an Olympus OM-D E-M1 and this lens to go to three countries in Africa in April, the system was awesome, and the weatherproofing turned out to be essential.
I fully agree with the super high build quality combined with the great image quality mentioned below. The compact size was perfect for travel, and not having to worry about dropping everything in to zip lock storage bags when rain hit was perfect.
July 27, 2014
This lens is a revelation. Super high build quality combined with excellent image quality make it one of the best lenses I've used. I love it's close focusing ability combined with the E-M1's image stabilization make it very useful for close up work. The lens hood attaches firmly. The center pinch lens cap works very well. Despite it's relatively high price, I would say this lens is a very good value.
March 22, 2014
I bought this as a first lens to go with my new OMD EM-1 camera. The lens is solid and definitely a quality product. It seems to be a good choice as a general purpose lens for the EM1, although I am already eyeing a couple of the fixed focal length Olympus lenses in order to have a lighter and more compact package. Since this was my first micro 4:3 camera, I have nothing to compare it to, but so far I am delighted with its low-light capabilities, the extraordinarily fast focus, and the useful zoom range.