Bad 1.4 Teleconverter or normal?

Started 4 weeks ago | Discussions thread
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win10-64 Regular Member • Posts: 120
Bad 1.4 Teleconverter or normal?

Is the sharpness of the starting aperture of TC's like starting at the same open wide aperture as the native lens, even it is starting at what would be the higher stopped down aperture of the native lens?

It appears on my copy, the starting aperture of f9 with the TC+200-600mm lens, is the same level of sharpness as the native lens at 6.3, not at the stopped down level of sharpness at f9 without TC, but at F11 with TC it is the same level as the native lens stopped down to f11.

Normal or do I have a bad copy? Thanks.

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