Originally posted by LeeRunge The Oly lens is way to expensive. I mean for the price of that Oly lens you can get a D850 with the Tamron or Sigma (which both have good image quality) and have a much better combo for under 4k.
If by image quality you mean the amount of detail captured (resolution and sharpness), then of course the Tamron and Sigma matched with a 48 MP FF camera should win. But in my experience selling images online, what sells images is not primarily sharpness and resolution, but content — and after content, it's color and contrast. The amount of detail captured only becomes factor when people looking for large prints — so there is something to be said for it, since larger prints bring greater profit — but in the hierarchy of aesthetic values, sharpness is lower in the scale than is generally thought. So the Tamron and Sigma are nice options — if the Tamron was available in the K-mount, I'd be tempted by it (although it is a little on the heavy side) — but I don't see either of those lenses matching the color and contrast of an Oly pro lens.
Originally posted by LeeRunge I love the OMD's but once in the EM1 series and pro lenses they loose a lot of the compactness that makes them attractive.
My biggest frustration with m43 was the fact that, until the release last Spring of the 12-45, all the pro zooms were just too heavy for my tastes. Olympus refused to play to the strengths of m43, believing that somehow they could make a complete m43 system like Canon and Nikon have for DSLRs and that would somehow work, whereas in reality m43 is a niche format and they should have been playing to the strengths of that niche (e.g., compact travel cameras and compact wildlife system).