I have had this m-4/3 14-150 f/4.0-5.6 mark-2 lens for four days now, and I use it on the E-M1. There are some impressive updates that have been applied to the mark-2 upgrade.
First, the original version 14-150 sported 13 lens elements in 10 groups; the mark-2 model had 15 lenses in 11 groups. And the original had only one ED lens element; the mk-2 has 1 ED, 1 DSA, one Aspherical ED, 3 HR lenses, an E-HR lens, and one Aspherical lens. This is a Major update! Half the lens structure has been updated!! I decided to shoot some flowers, to test the corner to corner resolution and contrast, and get a feel for the bokeh and image detail. My images came out very sharp and crisp, with fine contrast… and colors so accurate, rich and saturated… nice creamy out-of-focus backgrounds.
Anyway, that is the most impressive, for me. The lens hood is included, and it stores easily over the lens barrel, as expected. I like the texture of the focus ring and zoom ring. (I never used the original version, so I cannot compare the change, but only state the new texture of the focus and zoom rings is very good). Also to note, the lens mount is stainless (not plastic) which I prefer exclusively. The zero coating does a good job… I found no ghosting in any image.
Focusing was mostly very quick and accurate. Sometimes, when focusing on an object 30 or 40 feet away, then moving the focus point over a flower maybe 6 to 15 inches away, I could not get the lens to focus (bright yellow blurred flower in front of blurred green background). I finally had to back up a foot or so, and got focused, so maybe I was too close to the flower to come into focus, to begin with.
I always set my camera to Spot Metering, single point focus, and S-AF +M focus mode, all stored as MySet-1. I use C-AF (for video) in MySet-2.
The lens is really light wt and compact, but to mount it to my E-M1 I had to first remove the 12-40mm Pro lens. After removing the 12-40 Pro, I was certain the 14-150 was Never going to measure up... it just seemed so “less” of a lens. But surprisingly, it performed well. I was very impressed with the images I shot. I got great sharpness, corner to corner, and very good contrast as well. This lens Does appear to be a major improvement over the original 14-150. (I have seen some rather soft images from the previous version lens). I have yet to get an image that seems soft (out of focus or with low contrast).
I still plan on getting the 40-150mm f/2.8 Pro, but for now I intend to get a lot of use from this 14-150. The 14-150 mk-2 may not be quite as sharp as the 40-150 Pro, but it is closer than expected.
I would also seriously recommend this lens to anyone not able to afford the 40-150 Pro (as is my present case). This lens seems like it can perform under any demand.