You will need:
- 1 webcam
- A screwdriver
- Some black processed film (find some old 35mm negatives and use the unexposed start block)
Total time: around 15 minutes.
Step 1: Disassemble
Remove any base the webcam may have. You then need to remove any exterior screws (use the screwdriver). The case should then separate to reveal the insides, however if it doesn't try and prise the case apart using the end of a flat screwdriver or penknife. You shouldn't need too much force, and remember to check under pads and stickers for screws.
You may also want to remove the USB connection lead from the main board to give you more movement if the cable's position is fixed.
Step 2: Remove PCB and Lens Enclosure
You should end up with something like the one shown in the pictures.
Step 3: Seperate the Lens Enclosure From the PCB
DO NOT TOUCH THE NEWLY EXPOSED AREA OF THE PCB.
Put the PCB to one side, but try and cover the newly exposed area so that dust can't get to it.
Step 4: Disassemble the Lens Enclosure
Step 5: Find the Filter!
Look at the section with the lens (right in the picture) and try and get it under different lights. We are looking for a filter here, and it will probably have a red/pink/blue tint if you look at the right angle.
When you have found it, you need to remove it (carefully - it is glass). In my case, I had to snap a () ring out, although it had been well glued, so I needed to break it out to release the filter. When you have the filter, you will probably want to put it to one side in safety (you no longer need it, but if you ever one to reverse the modification you will need it).
Now you need to cut two (yes 2) squares of film out of your stash (black processed film - find some old 35mm negatives and use the unexposed start block). Clean them off best you can (remember the light goes through here, so any dust is going to leave a black dot on all your images), and put them in the place that the filter was before you removed it (this can take some patience) one on top of the other. Then do your best to put any holder back in place (like my () ring) to stop the film falling out.