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Now for the long refractors. Not too many surprises here, although I 'bout cried when I first saw the Zuiko 180/2.8 wide open. But now I know it cleans up well for 4/3rds use when stopped down a bit.


Here are the wide-open shots. (The 1.4X-A will not fit the Zuiko 600, due to the protruding front element.)
Tamron 300/2.8@2.8Zuiko 300/4.5@4.5Zuiko 600/6.5@6.5
  • Tamron 300mm ƒ2.8, ƒ2.8
  • Zuiko 300mm ƒ4.5, ƒ4.5
  • Zuiko 600mm ƒ6.5
1.4x
  • Olympus 1.4X-A teleconverter, Tamron 300mm ƒ2.8, ƒ2.8
  • ƒ4.5, Olympus 1.4X-A teleconverter, Zuiko 300mm ƒ4.5, ƒ4.5
2x
  • Olympus 2X-A teleconverter, Tamron 300mm ƒ2.8, ƒ2.8
  • Olympus 2X-A teleconverter, Zuiko 300mm ƒ4.5, ƒ4.5
  • Olympus 2X-A teleconverter, Zuiko 600mm ƒ6.5, ƒ6.5
Here are the detail images:

  • Tamron 300mm ƒ2.8, ƒ2.8, CROP
  • Zuiko 300mm ƒ4.5, ƒ4.5, CROP
  • Zuiko 600mm ƒ6.5, CROP
1.4x
  • Olympus 1.4X-A teleconverter, Tamron 300mm ƒ2.8, ƒ2.8, CROP
  • ƒ4.5, Olympus 1.4X-A teleconverter, Zuiko 300mm ƒ4.5, ƒ4.5, CROP
2x
  • Olympus 2X-A teleconverter, Tamron 300mm ƒ2.8, ƒ2.8, CROP
  • Olympus 2X-A teleconverter, Zuiko 300mm ƒ4.5, ƒ4.5, CROP
  • Olympus 2X-A teleconverter, Zuiko 600mm ƒ6.5, ƒ6.5, CROP
Boy, the Tamron is a bow-wow wide open! Adding teleconverters actually cleans it up quite a bit. This was surprising, and I thought it may have been operator error of some sort, but I since checked it again, and it really seems that bad wide open. Kinda negates the whole reason to be carrying around a couple kilograms of glass, when you have to stop down to the open aperture of the Zuiko 300, which did fine wide open and is much lighter.

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