Compare 17HF with 20HC (2)

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	Tamron 17HF	Tamron 20HC
	Contact manufacturer	Contact manufacturer
Zoom type	Manual	Manual
Lens Format inches	2/3	2/3
Focal Length mm	16	25
Iris Type	Manual Iris	Manual Iris
Lens Mount	C	C
F-Stop	1.4 ~ 16	1.6 ~ 16
Filter Size mm	0.5	0.5
Minimum Object Distance m	0.29	0.21

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