Closeup Filter Mount Bracket for a CEYOMUR CY95 Trail Camera

thingiverse

After seeing a couple of YouTube videos of using a DIY mount to put one lens of a pair of reading glasses in front of trail cameras, I decided to see what I could come up with for the trail camera I have. I wanted to use real camera closeup filters. The closest size I could find that would fit on this camera were 37mm filters. I found some reasonably priced set of 4 - 37mm Vivitar filters from Amazon for less than $12. https://www.amazon.com/dp/B0858GCT9G I found 37mm to be the best size to use. If you want to use a different size filter you will need to modify the included openscad source file. I initially made the design to have a slot to drop in a filter in Fusion 360, but then decided to see if I could just print threads. Fusion 360 does not allow for tolerances in threading & their threading plugin did not do have these kind of threads anyways. I went back to openscad which I used for several years before using Fusion 360. I found this design that gave me the filter threading info. https://www.thingiverse.com/thing:324877 and https://www.dyxum.com/dforum/filter-threads-are-they-the-same_topic22871.html that has the pitches used for the various size filters I might would use. I had used this threads.scad module before with great success. If you modify the include source file **TC_37mmThreadedFilterHolder_Rev4.scad**, you will also need to download the threads.scad from https://dkprojects.net/openscad-threads/ Since everyone's 3d printer have different accuracies, I included several test files. BaseTest.stl This is just a simple test to show you how well it fits over the trail camera's lens It will probably be a slightly loose fit, but should be sufficient since the bracket is mostly held in place in the back TC_37mm_0_10mm.stl This has a tolerance of 0.10mm for a 37mm filter TC_37mm_0_15mm.stl This has a tolerance of 0.15mm for a 37mm filter TC_37mm_0_20mm.stl This has a tolerance of 0.20mm for a 37mm filter TC_37mm_0_25mm.stl This has a tolerance of 0.25mm for a 37mm filter TC_37mm_0_30mm.stl This has a tolerance of 0.30mm for a 37mm filter And the corresponding final print files are similar named. TC_37mmThreadedFilterHolder_0_10mm_Rev4.stl TC_37mmThreadedFilterHolder_0_15mm_Rev4.stl TC_37mmThreadedFilterHolder_0_20mm_Rev4.stl TC_37mmThreadedFilterHolder_0_25mm_Rev4.stl TC_37mmThreadedFilterHolder_0_30mm_Rev4.stl The trail camera will have to be closed to attach this bracket, so turn the camera On before attaching this. You will probably get some initial bad photos while moving the camera around with it on & motion detection activated. I find using the +2 filter with the trail camera placed about 16" away from subjects to work best for me. To get that distance, I placed a 36" ruler in front of camera with a small 2x4 under the end of it so I could see the numbers. I then took a photo with each filter. I liked the +2 filter the best, so that is what I used. I currently have my camera set to take **Photo+Video**. Photo size set to **40M** & Video set to **4K**. Shutter speed I have set to **1/30 second** which is sadly the fastest this camera will fire. Sensitivity I have set to **High**, but I had quite a few false triggers probably because of the wind. I included several photos I have taken with the +2 filter. I occasionally get an action shot from the Photos, but I get more action shots from specific frames of the video. I use the program **ffmpeg** to extract all the frames from a video to a sub folder.