That's strange because the ND3 filter has to be built in , if you screw it into the eyepiece where do you put the palarizing filter ??
I recon Luke is wrong , because Lunt say their wedges have the ND3 filter built in 'Unlike the competitors' , their words .
Strange indeed Morton .
Try a google of the Solar observers 'Yahoo groups' website , that might clear it up because if Lunt suddenly decided to remove that filter and make it an extra at extra cost I guarantee there was a tide of complaints and moans there , I have not heard they made these an extra anywhere and I love my Lunt and have followed any mention of them on the web.
Brian.