Want to put a red nose on your dear old 'cron 40/2?

No problem, you just need:
- a 39mm UV-IR Leica filter (#13410)
- a Leica hood #12518 dedicated to the 'cron 40/2
- a 37mm rubber ring
- a pin and a die grinder
1. Grind the filter housing of the hood in order to enlarge its inner diameter to 37mm:
http://tinyurl.com/rv7w/DSC00720_afterweb.jpg
2. Remove the blocking ring of the filter with a pin or same:
http://tinyurl.com/rv7w/DSC00710_afterweb.jpg
3. Insert the glass into the filter housing:
http://tinyurl.com/rv7w/DSC00721-afterweb.jpg
4. Insert the rubber ring over the glass:
http://tinyurl.com/rv7w/DSC00731-afterweb.jpg
5. Screw-in the hood:
http://tinyurl.com/rv7w/DSC00728-afterweb.jpg
