SCAD camera lens cap with hole

thingiverse

Lens caps which screw into your lens' filter thread. Parametric to create a lens cap to fit any lens you want. Additional the possbility to extent the cap outward to make an empty space and make a hole in the center of the cap. This hole can be used for creative photograpy. Also when the cap is extended outward the possibility of adding a text on the iside of the cap is included. I made this cap for some creative photograpy with a group of other 'crazy' people in my photo group. Just adjust the diameter (`dia`) to the correct filter size of your lens and you are good to go. Remember to switch off the `show_slice`. More parameters are adjustable. Just play around with it. This design is based on SCAD Camera Lens Cap by emilcarr on Thingiverse: https://www.thingiverse.com/thing:4741679 Thanks for the instruction about the filter diameter and thread! Special thanks to the creators of 'text_on'. Visit: https://github.com/brodykenrick/text_on_OpenSCAD version 1 cap with an extension and a hole of 16mm in the cap, for serveral filter diameters. version 2 added bokeh for a 50mm 1.8f lens see https://www.instructables.com/DIY-Heart-shaped-Bokeh/ for suggestions and measurements for how to make a bokeh with a nice shape. The lens should have a wide aperture (around f/1.8 or lower). I've used a 50mm f/1.8 prime lens. The diameter of the lens opening is the focal length divided by the f-stop number. For a 50mm lens at f/1.8, the opening is around 27.7 mm. Hence, our bokeh shape should be less than this value. Make an inner circle with a diameter about 30% smaller than the calculated value of the lens opening. Inside this inner circle, draw the heart shape to the best of your artistic abilities. See https://en.wikipedia.org/wiki/Photographic_filter#Filter_sizes_and_mountings for a list of filter thread diameters and their corresponding pitch. - 43 to 58 mm every 3 mm and from 62 to 82 mm every 5 mm **Print Settings** - Printer brand: Creality - Printer: Ender 6 - Rafts: No - Supports: No - Resolution: 0.12 - Infill: 20% - Filament brand: 123-3D jupiter serie (can be found in the Netherlands) - Filament color: Black - Filament material: PLA - Notes: A finer resolution results in better threads. Use dynamic layer height, if supported by your slicer, to print the base faster.