to have on hand because none comes in many circumstances

any photography enthusiast will have to have this converter set of rings as well just none in many cases .and the screw well fluid .The only complaint one can make him (no 58mm) to have it you have to order the reference DC 147, there is the 58 mm, for against the small dimensions are not !!!! to have it all, order the 2 references, but then one area is almost 30 euros ...