Originally Posted by teddy
Hi Peter, I'm not sure if my reply is any good after a while but the OM Zuiko 100/2.8 is a very practical focal length for me and wide open I find it rather sharp in detail although just a touch lower contrast wide open but that is no problem. The out of focus areas are really smooth for it's type and the angle of view very practical. The colour is consistent like all Zuiko's and the contrast is good to excellent from f4. The best thing is the size. It is a small and light lens. Practical and easy to carry. A joy to use. I prefer the later multi-coated versions because they tend to work best on digital I find, like my Sony a7. Sharpness is plenty good, I cannot see how one cannot acquire a sharp image with it. Even wide open, slight increase in contrast in Photoshop or what ever is not an issue. It does not render like an 85/2 or Sonnar type, if you want a Sonnar - well, you know who you are but this is one of the best little telephoto lenses out there. If used on digital, the contrast is just right even wide open.
Here are some examples:
Sony a7, OM Zuiko 100/2.8 MC @ f2.8, VSCO Astia Filter
Wallaroo Sunset and Pine Silhouette
Sports Day Portrait
Sony a7, OM Zuiko 100/2.8 MC @ f2.8, VSCO Provia Filter
Teddy hi and thank you for this. I discovered your response belatedly. And its good to hear from another South Aussie.
I think I agree with you on the 100mm f2.8. It has a very "clean" and modern rendering which I would certainly not complain about. It makes it perfect as a walkabout longer standard lens. I have a soft spot for 100mm lenses in any event for some reason and this one is right up there. You are correct in saying it is not like a Sonnar - it does not have that kind of Sonnar character. But as as lens for everyday use its perfect. In particular I like its tiny size and how it "sits" on digital mirrorless cameras.
Since then I have gone out of my way to acquire a couple of other Olympus lenses too. The first is a 135mm f3.5 (135's tend to be cheap to buy but good - though I have not yet had a chance to test it properly yet I expect the same of this one.) The second is a 35-70mm f3.6 (yes - f3.6) zoom. This is supposed to be their best performing 35-70mm being the "pro" one with a non variable maximum aperture. But for an OM lens its a monster - both comparatively big and heavy. Though still not overly big by the standards of other SLR systems. Again, I have been out of action photographically for a few months and am yet to really give it a run. My initial impression though is while optically it is excellent, on an M4/3 its slowish maximum aperture makes it a bit harder to nail correct focus requiring the viewfinder image to be enlarged as focus peaking will not always show.
Another non OM Olympus I am using and really like is the little Auto T 100mm f3.5 for the Pen FT system. It is tiny but sharp and nice to work with.
The Olympus systems are ones I have not tried much until the above lenses came into my life and i can say they are very good. I am certainly not disappointed.