Holding a smartphone against a spotting scope eyepiece is a recipe for shaky, vignetted, and frustrating footage. Since my K&F Concept 20-60×60 didn’t have a mount that was easy to use and fit correctly, I built my own for my iPhone 14 Pro.
My goal was a “click-on, click-off” solution that was rigid, precise, easy to print and a perfect fit for the phone case.
The Design & Printing Process
I designed this in AutoDesk Fusion. The main challenge was the exact diameter of the K&F eyepiece. Using digital calipers, I created a friction-fit sleeve that slides snugly over the rubber eyecup, ensuring the phone lens stays perfectly centered on the optical axis.
Printing for Performance:
- Material: PLA (cheap, easy, and stiff).
- Infill: 100% (for maximum structural integrity).
- Design Tip: The model is split into two parts. This lets you print them flat with minimal support – just glue them together once finished.
Results
The stability is night and day. With the phone perfectly aligned, vignetting is virtually eliminated, making it easy to capture crisp, professional-looking wildlife shots.
Download the Files
If you use the K&F Concept scope [UK Amazon Link] and an iPhone 14 Pro (MagSafe case), feel free to grab the design below!
Link to STL Files (please make sure to split the model to parts before slicing)
