Dew Shield for Canon 75-300mm EF lens

thingiverse

This is a Dew Shield for Canon lenses. It fits an EF 75-300mm Zoom lens perfectly, but might also work with other lenses that have a diameter of 58mm (see what it says on the lens). If you're not sure whether it will work with yours, measure the outer diameter of the lens top part. It should be 64,5mm. The dew shield needs a bit of support. The knobs are optional, but make it easier to lock the lens into place. The knobs need to be glued onto the screw heads. You'll need two M3 threaded inserts (https://www.amazon.de/gp/product/B08BCRZZS3/ref=ppx_yo_dt_b_asin_title_o04_s00?ie=UTF8&psc=1) and two M3 screws. You won't get vignetting as I calculated the max. distance the dew shield could have without interfering with the field of view. Due to its lenght, it also helps a lot with stray light if you're shooting from an urban area like I am. I recommend using black filament or something else that's dark if you don't have any black filament left.