| 摘要 |
<p>The present invention relates to a focus device (100) to be applied on a digital-single- lens-reflex camera (19) comprising a lens (20) having a focus ring (21) which is rotatable and a non-rotating, fixed section (22), comprising a first element (8) having a sight (9), a second element (1) having an arc-shaped part (2) and at least two markers (15, 16, 17, 101) arranged on the arc-shaped part (2), wherein the first or second element (8, 1) is adapted for connection with the focus ring (21) of the lens (20) of the camera (19) and the other of the first or second element (1, 8) is adapted for connection with the non- rotating, fixed section (22) of the lens (20) of the camera (19).</p> |
