Skip to content

Focussing aid for camera lenses (for precise focus)

Creation quality: 0.0/5 (0 votes)
Evaluation of members on the printability, utility, level of detail, etc.


3D model description

This is a collection of focusing aid for different diameters of lenses / focusser rings.

In astrophotography or macro photography it is essential to focus as precise as possible. By turning the focus ring on DSLR lenses by hand, it is quite difficult to lock down on the best focus possible (most likely you will be able to turn the focus ring by a degree precision). With this tool attached, it is possible to get really precise focus, as you will be turning a screw on one of the two parts. Which is increasing the precision 50-fold to 100-fold (depending on your skills).

The rings are designed for given diameters. The rings may flex for 2-3mm in diameter. I would recommend, lining the rings inner surface with velours tape. One ring has to be attached to the focus ring, the second ring has to be attached to the lens barrel (non-moving part)

What you will need:
1x ring with pin
1x ring with fork
2x conical knurled knob (from )
2x flat knurled knob (from )
2x M4x45mm or M4x50mm hex head for conical knurled knob
2x M4x40 hex head for flat knurled knob
4x M4 nut
M4 tap to cut threads
(hot) glue to attach screws in knobs

Current set of ring diameters is:
63mm (f, p), 72mm (f), 74mm (f, p), 78mm (f, p), 80mm (p), 84mm (f, p), 94mm (f, p)
f ... ring with fork
p ... ring with pin
If time permits, I may add further diameters on request!

3D printing settings


3D printer file information

  • 3D design format: Folder details Close
    • Focussing_Aid_for_camera_lenses_-_63mm_ring_with_fork.stl
    • Focussing_Aid_for_camera_lenses_-_63mm_ring_with_pin.stl
    • Focussing_Aid_for_camera_lenses_-_72mm_ring_with_fork.stl
    • Focussing_Aid_for_camera_lenses_-_74mm_ring_with_fork.stl
    • Focussing_Aid_for_camera_lenses_-_74mm_ring_with_pin.stl
    • Focussing_Aid_for_camera_lenses_-_78mm_ring_with_fork.stl
    • Focussing_Aid_for_camera_lenses_-_78mm_ring_with_long_pin.stl
    • Focussing_Aid_for_camera_lenses_-_78mm_ring_with_long_reenforced_pin.stl
    • Focussing_Aid_for_camera_lenses_-_78mm_ring_with_pin.stl
    • Focussing_Aid_for_camera_lenses_-_80mm_ring_with_pin.stl
    • Focussing_Aid_for_camera_lenses_-_84mm_ring_with_fork.stl
    • Focussing_Aid_for_camera_lenses_-_84mm_ring_with_pin.stl
    • Focussing_Aid_for_camera_lenses_-_94mm_ring_with_fork.stl
    • Focussing_Aid_for_camera_lenses_-_94mm_ring_with_pin.stl

    Learn more about the formats

  • Publication date: 2022-09-17 at 11:47
    Published to Thingiverse on: 2017-07-06 at 23:30


CC BY-NC - Attribution - Non commercial


Issue with this design? Report a problem.

Best 3D printer files of the Gadget category

Best sellers of the category Gadget

Add a comment

Would you like to support Cults?

You like Cults and you want to help us continue the adventure independently? Please note that we are a small team of 3 people, therefore it is very simple to support us to maintain the activity and create future developments. Here are 4 solutions accessible to all:

  • ADVERTISING: Disable your banner blocker (AdBlock, …) and click on our banner ads.

  • AFFILIATION: Make your purchases online by clicking on our affiliate links here Amazon.

  • DONATE: If you want, you can make a donation via Ko-Fi 💜.

  • WORD OF MOUTH: Invite your friends to come, discover the platform and the magnificent 3D files shared by the community!