Today I just received my 20mm Panasonic lens and while I've only had it for a brief time, I am not happy with it. Upon arrival, my courier had dropped my package off on my front porch unattended for more than an hour. A $400+ product unattended is quite concerning for me.
When opening my package I found out that the original Panasonic 20mm lens box had been opened already. On top of that, the lens seems to be lightly used already. I found specks of dust on the front glass lens, near the filter threading and small cosmetic scuffs in between its focus ring / front body lens. However, the most upsetting part of this lens for me is the sound it makes when trying to focus. I am not sure if this is a defective or damaged item since it is making these odd motor sounds when trying to autofocus.
Whether it is focusing on stills or video, the motor of this lens creates a noticeable sound. This is really unattractive for me, and comparing my experiences when using my friends Panasonic 20mm lens, theirs do not make such an unwanted noise. This sound does not stop when taking pictures. When pressing my shutter button halfway to hunt images in focus, the motor has a continuous loop of winding/ticking sounds. With that said, the autofocus itself is not the best. It takes a while to autofocus and can be inaccurate when tracking moving objects.
Though I will be returning this, the image quality and bokeh is great considering its price point. The IQ is sharp and bokeh is quite smooth.