I only used a short time so I cannot comment on the long term quality. It appears to be good in the little time I used it. It has good life and the battery charges well. It is much cheaper than a replacement from Panasonic so if it holds up it was a great buy.
For portraits, this lens does not disappoint. The images are stunning and very film-like. For best results, close one stop to f1.7 . This gives enough room for error, while still providing lush background blur. The depth-of-field wide-open is too shallow and the focus shifts slighty toward the front of the subject, making it a bit difficult to nail focus.
If you need further help or information please visit our Online Help Center