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> I recently bought an adapter ring to step me frm 58-55.. its wierd
>that the ring doesnt attach to my 55 mm.. i was thinking that if i attach
>the smaller end to the 55mm the other end of the ring would accept 58mm
>filters.. but this adapter is doing otherwise.. it attaches to my 58mm and
>lets me put a 55 mm filter on that lens.. i guess since its just 55-58,
>there may not be any problems but isnt the ring suppose to work the other
>way ?? [...]
You have a "step-down" ring, not a "step-up" ring. Generally,
step-down rings are not a good idea, since they will often
result in cut corners (vignette) in the image, though close-up
lenses can often be used successfully with step-down rings.
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