Anamorphic Adapter for Viltrox 28mm f/4.5 Cookie Lens

This is a 3D-printable anamorphic adapter designed for 

• Viltrox 28mm f/4.5 Sony E-mount full-frame lens

• DJI Osmo Pocket 3's 1.2x Anamorphic Adapter by K&F Concept (Kent Faith)

This is an original design inspired by the 1.3x Anamorphic adapter for the same Viltrox lens made by Cole and the good folks at AltCine. Since that smartphone clip-on Anamorphic lens was very expensive in my country and the DJI OMP3 accessory was the cheapest, I redesigned the adapter suitably. 

Model features: 

1. Friction-fit onto the Viltrox lens

2. Zero obstruction to the Viltrox lens cover slider

3. Alignment marker to keep the Anamorphic flaring horizontal

4. Tight press-fit for the DJI OMP3 Anamorphic adapter

5. Flush with inner and outer faces once mounted

6. Diamond knurled outer surface for easy grip and removal (do not twist)

7. Threading support for 52mm lens filters, hoods, or pinch-style lens caps

8. Scooped front for easier pinch-removal of the DJI OMP3 filter 

9. Printable in FDM or MJF/SLS powder resin process

10. Zero vignetting in final images

The model files include a STL file and STEP file. They are not the same. The former is solid inside and optimized for FDM printing, with recommended settings mentioned below. The STEP file is internally hollowed with 1mm thick walls all around, and it includes a drain hole to clear excess powder resin when manufactured using MJF/SLS/DMLS processes. 

Recommended print settings for FDM: 

• 0.12mm layer height

• 20% cubic infill

• Supports: Raft/Brim/None

• Support structure: Tree

• Material: ABS or PETG

• Orientation: Threads facing up and Knurled edge flush with bed