Those seem right. I made some with oatmeal canisters and used #10 needles. I also have a magnifying loupe that has measurements inside the view so I could aim for .46mm. I used one of the online calculators to figure out what would work well (it's about 5" diameter in an oatmeal can).
Originally Posted by JessicaDittmer
To find the right needle, I went to Joann's with the list above and found a variety pack of needles that included a couple that I thought were possible.
That camera looks like it'd be a nice pinhole.