Super telephoto with OIS - compact and fast for trips

Immediately after the release I bought the 5.6 / 100-300 mm, because I need a lot of focal length for my favorite animal motifs and also like to have to travel a super telephoto here. At home, I like to use EOS lenses as 2.8 / 300 and 2.8 / 400 mm with converter but when traveling I take only when I have relevant contracts or longer in one place am (Safari).
But I was not really impressed, the AF was not perfect with the G2 and GH2 and then the much more expensive Olympus 75-300mm appeared even more compact and lighter.
At present, I had tested it against two 6.7 / 75-300mm Olympus lenses - even my faintness and housing quality did not like in relation to the price at Olympus.
But Olympus recorded at 300 mm always sharper than the 100-300 mm and not vignetted and the image stabilization is very usable since the OM-D. I have worked for a year with the lightweight 75-300mm Olympus.

But recently I have made new tests. The occasion was my dissatisfaction with the OM-D, in practice, be added that I had 2 x dust hooch in 75-300 mm. They were free and quickly eliminated from Olympus both times. But my confidence in the design has not improved.

Lo and behold, Panasonic has obviously optimized its serial production, because now two 5.6 / 100-300 mm at full aperture and 300 mm were sharper than my re-aligned 6.7 / 75-300mm Olympus
and vignetting can be seen, at least on newer cameras also no trace. And many attempts to bring the image stabilizer to its limits, the internal OIS cut off always better than the faint 6.7 / 75-300 mm at the OM-D EM5.

Only the AF I have the impression that at 300 mm, the OM-D is faster than the G5 - but that will change with the Panasonic GH3 probably.

Sold So 75-300mm and when buying from 100-300 mm even left money - what more could you want.
Moreover for me the advantage of a Panasonic Tele on each camera is always to use with optimum image stabilizer
and sun visor and soft bag are included.

The Olympus lens policy without sun visor for sale is unworthy of Olympus and raises for me the shade on the Zuiko production.
The processing of all previous Zuiko MFT zoom lenses leaves much to be desired for me - especially in direct comparison to Panasonic.
Even in a Test against the Panasonic FZ200 is brought by the larger sensors, despite the lower light intensity is always the better image results.

Price and performance are here in the balance.

Light:
+ Visually good sharp best at f: 8 and 250 mm
+ Relatively compact
+ Good Closest focusing distance
+ Faster AF
+ Image Stabilizer OIS always very good
+ Good, stable and dense mechanics
+ Rubberized adjustment rings
Included + sunshade & Weichtasche
+ Fair price

Shadows:
- A bit soft not perfect at 300 mm and edges
- Not super easy and also not super compact
- Probably a little stronger scattering series