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Thread: Tokina 80-200mm f/2.8 AF on D3100

  1. #1

    Default Tokina 80-200mm f/2.8 AF on D3100

    Hi guys, I have a question to ask, as I checked this lens Tokina AT-X 828 AF Pro 80-200mm f/2.8 on tokinalens main site and found out that it have IF. But when I use with my D3100, the AF doesn't work.. any1 know why?

  2. #2

    Default Re: Tokina 80-200mm f/2.8 AF on D3100

    The lens does not have a built in motor, that's why it does not AF with D3100.

  3. #3

    Default Re: Tokina 80-200mm f/2.8 AF on D3100

    Internal Focusing (IF) is different from Built-in Motor (BIM). D3100 requires lenses to have BIM to focus. IF just means that the lens will not extend when focusing.

  4. #4

    Default Re: Tokina 80-200mm f/2.8 AF on D3100

    okay! thks for your answers

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