Scratches to grad filters

[SFTPhotography]

Just how prestine to you keep your grads. I've noticed some very light scratches that you cannot feel but are visible on close inspection. However, there is a small nick in the top quarter, about 1mm long, 1mm wide and you can feel it with your hand.

Just how adversely will this effect my imaging, I clean them every time I am out with them but worried this could be detrimental?

 

[a1ex2001]

Scratches and tiny dings are only likely to be a problem with flare they are unlikely to effect image quality.

 

[SFTPhotography]

I imagined as such, shooting sunsets with the scratches and into the light source might be problematic, but away from the sun I should be ok.

I need to add to my set, but I don't want to directly replace these