[el-ray]

Da würde ich auch das 70-400 bevorzugen.

Zitat von kurtmunger.com:

An alternative to the Minolta AF 300mm F/4 might be the Sony 70-400mm F/4-5.6 SSM G. Obviously it's a stop slower, and focuses slower, (but more accurately at longer distances based on my use) and costs more. However, contrast seems slightly better, (go here for a comp), it's more versatile, and color fringing is almost non-existent. If color fringing doesn't bother you, the Minolta may be a better choice, especially if you need F/4. Bird shooters will need at least 300mm to pick up feather detail at longer distances. For the ultimate in 300mm enjoyment, get the uber-expensive Sony 300mm F/2.8 SSM G.

Zudem hast du beim 70-400 auch noch Garantie und Service, beim Minolta weiß man nicht, wie lange die Ersatzteile noch reichen.... bei über 1000 Euro durchaus erwähnenswert