Filters

The Certo Six takes standard 40.5mm filters, but you can't fold up the camera with a filter on. This makes using a UV or HAZE filter as a lens protector impractical at best.

In my opinion, ND (Neutral density) filters are very useful with the Certo Six given it's 1/250-1/400 second max shutter speed (depending on your shutter). They allow you much more control of depth of field in brightly-lit situations.

• ND 0.3 = 1 f-stop
• ND 0.6 = 2 f-stops
• ND 0.9 = 3 f-stops

Here is a nice site explaining ND filters