iLuvs90,
This is my plan.
First, pair with E-PL5, eventually EM1.
1a) Pana M4/3 100~300mm or
1b) Oly M4/3 75~300mm MarkII
2) Oly 4/3 75~300mm with MMF3
3) Ultimately Oly 4/3 F2.8 300mm
I unable to decide 1a) or 1b) because I do not know whether that Pana's F4.0 can be opened at the 300mm.
On the other hand I know most zoom lens has a sweet spot between the 2 ends of the focal length.
Someone pointed to me, unless it was a constant F4.0, did it matter it has a F4.0 or F4.8 to start with?
CameraRental Singapore did not have a 4/3 300mm lens to rent nor I have extra money now to buy and try.
Hence always ask around and learn from others or internet.
Thank You
EisMann