DIY Ideas
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How to make a cheap neutral density filter
This is a cheap neutral density filter for photography. It costs around €4 each instead of €70-90.
Kit
- Cheap welding glass
- Step-up adapter ring
- Sugru
Step 1
First you need a cheap welding glass that will be big enough.
Step 2
The next thing you need is a step-up adapter ring. Mine is 67-72 mm since my lens are 67 mm in diameter.
Step 3
You need to cut the glass to the bigger diameter of your step-up adapter (72 mm in my case).
Step 4
Check the fit between the ring and the cut glass and avoid glass imperfections as shown. This is why I bought two welding glasses.
Step 5
Apply some Sugru in the ring and press the glass against it, then trim the excess of Sugru and wait 24 hours.
Step 6
This is the original picture with a 30 seconds exposure.
Step 7
This is the picture with some corrections in Photoshop.
