Summary: Purchased this specifically for Macro work for my Panasonic Lumix G6. The lens documentation suggested a firmware upgrade on the camera might be needed for maximum compatibility with the lens.
Summary: MY EXPERIENCE > There is no doubt that the Leica DG Macro-Elmarit 45mm F2.8 Macro is an excellent lens--indeed I purchased a Lumix GX7 system largely to be able to use this lens, largely based on a 20-year love affair with a Vivitar 90mm f2.8 macro (90mm in 35mm format = 45mm in M4/3 format).
Up to the moment it failed I was quite pleased with the lens
john konrath, Amazon
2 September 2014
Summary: Panasonic will not repair, for free, an 18 month old $900 lens that simply stopped focusing. Numerous other people report the same problem on a not widely purchased lens (i.e. DPREVIEW). This lens obviously has some sort of defect which the company will not acknowledge, or remedy.
Summary: The pictures are incredible, macro can't be beat, I couldn't ask for more beautiful up close shots. Works well as a general purpose lens for landscape or set portraits. Autofocus is almost totally useless on any moving subject or when really close in.
Summary: The 90mm macro lens is a staple of 35mm photography; this lens is certainly a worthy successor in the m43 format. I can't fault its optical performance at all - sharp, good contrast, good color.
Summary: It is heavier and better built than other non-Leica Panasonic lens. The focusing range is 0.5 ft to infinity. The macro photos taken with this lens are very good. Considering the cost of the lens, it might not be wise to buy it if one only takes occasional macro shots.