How to choose your correction filter ?

The 2 most important criteria are the luminosity and the color of water you dive in.

See below a test performed in blue and clear water in Egypt:

Shot with GoPro Hero 2 without filter

Shot with GoPro Hero 2 and red filter

Shot with GoPro Hero 2 and orange filter

Shot with GoPro Hero 2 and magenta filter

?In that case, red and orange filter gives the best result whereas in green algae water the magenta filter will restitute colors more naturally.

See video :

 

Close-up +10 filter :

The close-up filter allow you to decrease the minimal focal distance. You will see below 3 snapshots from videos taken at 5, 10 and 15 centimeters from the box filter.

You can see that the close-up filter also allow you to decrease the fish eye effect.

Test of close-up filter at a distance of 5cm

 

Test of close-up filter at a distance of 10cm

 

Test of close-up filter at a distance of 15cm