Got this long range lens for a while on my Oly OM-D E-M5
Would like to share some of my photos (Resize and USM @ (Amount 100, Radius 1, Threshold 10)
The optic quality looks good for me...
I saw some review claiming the optic quality is so bad, and was not improved stopping down... This contradict to my case...
My finding was that image quality was good at F4.5, getting better at F5.6, and give it best result at F8
The reasons I didn't keep it was
1) It's weight,
2) For me, it's hard to make right focus since it is 600mm on M4/3.