scracted lens port, does it make a difference?

[ballastbelly]

i have scratced off some of the coating (antifogging/anti reflect?) on the inside of the lens port of my housing by using tissue to clean it . although the scratches (ugly patches!) are in strategic positions they didnt appear in my u/w photos or sealevel shots.

indeed the scratches are visible when viewing the lens port from a distance of at least 6 inches. if you put the port to you eye they are invisible. are there conditions where inside scratches will affect certain shots? like night dives etc? thanks

 

[bvanant]

You might have an issue with flare if you are trying sun balls, but at night should not be a problem.
BVA

 

[Dsix36]

It was cause a very definite blur in the photo if a light source is shining towards the camera. I just saw an example of this with my friends pics via a scratched dome port.