D500 + 200-500 / singma 150-600c / tamron g2
邊個好??
一定 200-500,crop 完都靚過另外兩支@600mm
lab test http://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx?Lens=990&Camera=453&Sample=0&FLI=6&API=0&LensComp=1035&CameraComp=614&SampleComp=0&FLIComp=3&APIComp=1
可以compare any two of them