The goal of this project was to prove out the feasibility of a 3D printed lens hood. I purchased a Nikon 50mm f1.4 from KEH that did not include the HB-47 lens hood so it was a good first candidate to prove this out with. The measurements for the design came from the lens as wells as a Nikon 105 micro lens hood.
The lens hood should work with the following Nikon lenses: AF-S 50mm f1.4, AF-S 50mm f1.8, and AF-S 50 f1.8 Special Edition.
I have only verified it with the AF-S 50mm f1.4.
This solution uses a single profile to attach to the lens in the storage and in use positions. This choice simplified the design and printing process. The tradeoff is that it can be installed incorrectly if rotated in the wrong direction. The original HB-47 hood has separate profiles for the storage and in use position.
To install the hood on the lens, align the hood profile with the lens then rotate hood so that the lens hood profile slides into the grooves on the lens. Flex the lens hood by pressing on the sides while rotating slightly and the hood should locked into place on the lens.
To remove press the sides of the lens hood in and rotate to unlock.
To store the hood use the install instructions but with the hood surrounding the lens.
This design was done without access to an original HB-47 lens hood so I cannot draw a comparisons to it but I am happy with the result. I have not noticed any issues with photo quality as a result of adding this to my lens but your milage may vary. If you do choose to print this, I would recommend using a black matte filament and/or painting the interior with a matte black. Both solutions are to reduce the risk of any extra reflections.
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