10.5mm with dust in lens

[Mark-Anthony]

Hi All

after searching the net for a while, I bid on a 10.5mm f2.8 Fisheye. It arrived and is a superb lens. Pictures come out really good.

Only problem is, there is what can only be described as an eyelash or something along with a few tiny specs of dust inside the back glass of the lens.

It's not showing up in pics but really annoying me when I'm looking through the cam.

would anyone know if it's an easy lens to open up without damaging it?

I don't fancy breaking it as it cost me an arm and a leg.

 

[Rebel t3i]

If it doesn't affect the images I'd leave it
I have a similar problem but on close inspection it's in my view finder I only notice it when using certain lenses

 

[Mark-Anthony]

I only get it with the fisheye. When the rear lens cap is removed, you can see the hair or whatever it is in the back. When looking through camera, it looks about 5am big, but looking at back of lens, it's possibly under 2 mm. Just very annoying