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http://www.thingiverse.com/thing:3385313
3d-printed telephoto lens (Sony E-mount) by DiyOwl is licensed under the Creative Commons - Attribution license.
http://creativecommons.org/licenses/by/3.0/

# Summary

Be sure to watch the projects Youtube video: https://youtu.be/oliiB-dHrg4

The 45mm lens I created last year: https://www.youtube.com/watch?v=gnL0r0tSVdk

Although the pictures are far better than the ones from the 45mm lens, it would still not be a lens suitable for everyday usage. The lens is quite bulky, the lack of autofocus and the very dark aperture really aren't optimal. Nevertheless, it was definitely a worthy experience to build something like this from scratch. It taught me a lot about the inner workings of cameras and lenses and their properties as well as challenges.

If you want to do some editing to the parts, feel free to send me an email

anton.varbenov@gmail.com 

and I will send you the actual fusion 360 files


# Print Settings

Printer: Anycubic i3 MEGA
Rafts: No
Supports: No
Resolution: 0.15
Infill: 50%
Filament_brand: -
Filament_color: Black, red
Filament_material: PLA

Notes: 
*IMPORTANT*

the part " focus_ring " requires support material

Use a slow print speed: 30-40 mm/s