DSLR negative converter

I wanted to scan film negatives with my DSLR camera. I came across this blog:

https://www.diyphotography.net/scanned-old-negatives-0-budget-dslr-stuff-home/

and I made a similar set-up.

Then I decided I wanted to 3D print something a little easier and nicer looking, so after I found GigaKnight's perfect lens adapter, I made this. Point it at a bright, diffuse, light and snap!

On my camera I have to turn off auto focus to make it work, so just make sure to focus it.

I used supe