I am impressed with the quality, size and weight of this lens. It focuses fast enough for most purposes. I have several Panasonic lenses - a 7-14mm, a Panasonic 45-200 and a non-professional Olympus 14-150 lens, none of which are particularly sharp. However, it far surpasses them in sharpness. It's also the first "fast lens" I've owned since I had my Minolta set 101 days ago when I had the standard 50mm f1.7 lens, and it made me realize I had the joy of the additional control over speed and depth of field. . I like my other lenses and they're certainly a lot more versatile, but for the right subject, this lens is fantastic, especially when paired with my high-resolution EM5 ii mode. I expect the macro tube set to make a great macro lens. Of course, since it is a prime number, it is not as convenient and useful as a zoom. I just wish I could afford the Pro range zooms, which I've been told are almost as sharp. I'd love to hear the thoughts of those who did. Is it worth the money? Yes, as long as you're willing to use old-fashioned zoom, your legs.