"All In" No Going Back Now

The 25mm produces very good results, I like it. But it is a somewhat cumbersome lens, especially when you add the big rectangular hood which you can't reverse for transport. It is also a little redundant with your 20mm a remarkably sharp, yet fast and tiny lens.

The 17mm F1.8 Olympus is not as sharp as the 20mm or the 25mm, but a beautifully built lens, able to zone focus and fast to AF. But like the 25mm it may be a little to redundant with your 20mm.

Unless you don't shoot much at the wide angle end, I'd rather go for a wide angle : 14mm pancake is a cheap pancake lens, but very good, save for the fact it has quite a bit of distorsion left even after the auto correction. I used it for group shots and the people near the edge got nasty deformations. The 12mm Olympus is a wonderfully built lens and light and sharp. It allows zone focusing, but it is expensive. You could also get one of the wide zooms : 7-14mm Pany is very sharp, but slower F4and expensive. The Olympus 9-18mm would allow more versatility. But if your next lens will be a wide angle lens, then I'd wait to see the reviews of the announced Schneider-Kreuznach 14mm. It will be very expensive, but hopefully have great IQ !

The Voigtländer are manual lenses only, no AF and very big compared to other MFT lenses. They are the fastest lenses available for MFT (F0.95), but with such shallow DOF I'd prefer them to have AF. I do also find them too big and heavy for the mft philosophy. Plus they are expensive. But they have some strong supporters especially among videographers like appreciate the fast aperture and the manual focusing.

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rrr_hhh