This filter does give a brighter view than an o111 but there is one thing worth checking when buying one,the foam in the case on mine put small circular screatches on the surface of the filter,this was due to the filter being sqeezed down into the fom when the top was screwed down,the fix is easy,just trim out the centre portion of the foam,i have an orion 2in moon filter and they cut the foam around the perifery,this holds it centrally without the pressure on the glass surface,maybe on this sort of filter its not so important but on a uhc or o111 surface marking is not a good idea.
