Reviews and image samples I've been seeing all seem to indicate that this lens is by far the sharpest m43 telephoto zoom lens with better color and contrast especially at the longer end compared to both Oly 40-150 and Pana 45-200. I've tried Oly 40-150 in the past. While it's definitely a good bang for the buck (if purchased at or under $150), I always considered the lens somewhat average. It’s sharp at close distances but softens up as it gets closer to infinity (mind you, I don't use slow telephoto zooms for portraits, prefer bright primes for that). The color and contrast are no match to the primes I shoot most of the time (Panny 20, 14 and Oly 45). Its build quality is below decency level, IMO. So eventually I sold this lens due to low rate of keepers. I was never really interested in Pana 45-200 due to much larger size and weight. Now, Panasonic 45-175 seem to be the smallest overall package due to internal zooming and 46mm filter thread. But it also seems to be the sharpest at all focal lengths with noticeably better contrast and well controlled CAs? The only issues I was reading about were all related to OIS which I won’t be using on Oly body. It’s a daytime lens for me so just like with Oly 40-150 I would have no problem reaching at least 1/800s. I like to use telephoto zoom to shoot my friends surfing and sailing including video. Also, I go to national and state parks several times a year (Yosemite, Yellowstone, Everglades, Grand Canyon, you name it...). By all accounts Pana 100-300 seem to be an excellent lens and more appropriate for some of those types of shooting but it's way too bulky at which point photography becomes a burden and not fun anymore. Therefore, pixel level sharpness is rather critical to me as I am cropping quite a bit and hoping to achieve that with Pana 45-175. Thoughts?