What can I say about this lens. Well, it's metal, weatherproof, and damn sharp. Even at f/1.4 it's sharp all around with little to no lateral vignetting. I could pay $1000 for this lens and be happy as a clam. All I can say is BUY THIS LENS. I photographed the rings at 1.4 on my GH5. The video is even clearer. The colors are very pleasant and the contrast is excellent. The autofocus was spot on, once I got used to belaying I got used to macro photography. Everything around this lens is a masterpiece. For videos, IS was great. Almost smooth gimbal but that was with my 5 axis camera. The focus ring is nice and smooth, made from rubber that feels almost like metal on the lens but is easier to hold, especially when wet. If you look closely you can clearly see how I am photographing through the eyes of the model.
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