Something Stupid with my housing

[Ardy]

Hi All, I must be getting very bloody old. I have always taken off the hoya filter from my 60mm up until the last trip and now I have a ring mark in my Oly flat port. on my PT Ep 13 housing.
Any ideas if it can be polished out?

 

[happy-diver]

I suppose you can't take a picture of your camera with your camera right

 

[Ardy]

??? pic of my camera with my camera? Assume you mean to use the housing?
Yes but only at min focusing distance.

 

[Searcaigh]

I think he means of your camera in the housing

I assume you can take a photo of the mark on your port with the camera in situ using a phone camera

 

[Barmaglot]

Is that mark within the field of view of the lens? As it was left by a filter, which is not supposed to get into view, I doubt it will have any impact on your photos.

 

[Ardy]

No it won't for 1:1 but when I focus further away I assume the wider view will impact. I'll check tomorrow getting late here in OZ.

 

[scubaozy]

Polishing should work, I suppose you can use a drill bit with a polishing disc, otherwise it will be tricky to access.

 

[Barmaglot]

Is the focus breathing on this lens that bad? As a prime lens, its field of view should be fixed.

 

[Ardy]

Is that mark within the field of view of the lens? As it was left by a filter, which is not supposed to get into view, I doubt it will have any impact on your photos.

That is true for the 60mm (I did it with) but it shows up with the 30mm as I checked it this morning, Can't see the full ring but shows as a white mark in part of the ring.
I am reasonably sure it is acrylic and not glass so I will have a go at polishing it out but by coincidence a 4" semi-dome AOI port came up and I bought it. As a bonus it takes the 9-18 lens.

 

[Barmaglot]

Is the glass removable? I've never dealt with Olympus, as I use SeaFrogs housings, but in SeaFrogs port it's relatively easy to take the glass out for repairs or replacement - SeaFrogs sells replacement glass pieces; if the Olympus glass is removable, then perhaps you can buy a replacement part, and even if you can't, it should be much easier to polish out the scratches outside the port.