Canon 300mm F1:4 L IS USM decoupled focus repair advice please

Discussion in 'Canon Lens Discussion' started by David Southwell, Sep 15, 2025.

  1. David Southwell

    David Southwell New Member

    Joined:
    Sep 15, 2025
    Messages:
    1
    Equipment:
    Canons multiple bodies
    Turning focus ring (rotating freely) does not provide focus or movement in window - advice please am located in bristol
     
    Joe Belmonte likes this.

  2. John L

    John L Active Member

    Joined:
    Jul 10, 2019
    Messages:
    302
    Location:
    UK
    Which camera?
     

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