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DR

Comments by DR, unless otherwise noted;
"X" in the rating column indicates that the performance of the converter/lens combination varies a lot; the rated converters work with virtually everything they will fit

TC14A

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4.8

2 samples; 1.4X for short lenses that do not have rear elements recessed enough to accept the long-lens TC14s; works well with most lenses it fits that are 200mm and shorter
TC14 and TC14B

4.5/5

4.8

4 samples; 1.4X for lenses that have rear elements recessed enough to accept converters with projecting front elements (mostly long lenses); can be used with other lenses for macro macro work when using tubes on the front of the converter (TC14 is AI, TC14B is AIS)
TC14C

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5

2 samples; 1.4X for lenses that have rear elements recessed enough to accept converters with projecting front elements (mostly long lenses); can be used with other lenses for macro macro work when using tubes on the front of the converter; this unusual converter is near perfect on some lenses, and out-performs the excellent TC14/14B on all lenses they will fit except the older 500mm f8 mirror (the 80-200mm f2.8 AF with the TC14C by f4 is as good as prime lenses, and betters the excellent 100-300mm f5.6 at similar stops); came with the Nikkor 300mm f2
TC14E

4.5/5

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1.4X; designed for AFI/S (long) lenses, and will not fit others without modification of the converter bayonet
TC16

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1.6X; designed for F3AF, adds limited focus range AF ability to MF lenses f2.8 and faster
TC16A

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4~4.6

2 samples; 1.6X; adds limited focus range AF ability to MF lenses f2.8 and faster; does not pass AF lens electrical signals to the camera body; does not match as many lenses as the TC14A does
TC-1, TC200, TC201

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"X"

4 samples; 2X for lenses that do not have rear elements recessed enough to accept the long-lens TCs; works well on some lenses, adequately on some, and poorly on some; f5.6 is the widest stop for good performance even with the best lenses on it; excellent for increasing magnification in macro work when using small stops (TC-1 is non-AI, TC200 is AI, TC201 is AIS)
TC-2, TC300, TC301

4.2/4.5

3.5~4.5

3 samples; 2X for long lenses that have rear elements recessed enough to accept converters with projecting front elements (mostly long lenses); can be used with tubes on front of converter for macro work, results are good with most lenses that it fits, except the 300mm f4.5 non-ED, and 300mm f4.5 EDIF (TC-2 is non-AI, TC300 is AI, TC301 is AIS)
TC20E

4.8/5

"X"

1 sample; 2X; designed for AFI/S (long) lenses, and it will not fit others without modification of the converter bayonet; works fairly well with the 80-200mm f2.8 AF (better than the TC200/1), but not well on other non I/S lenses I tried it on
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