The step up ring refers to the filter size. This was a very hot topic with the original Dimage 7 and most agreed that using a 62 mm filter with a 49-62 mm stepup ring was best.

The manual is refering to focal length settings.

Dave S

I'm puzzled (or just being thick?)

The Dimage a2 manual contains the following statement under the heading "Using Filters":

"Polarizing filters and close-up lenses may cause vignetting at the wide-angle range of the lens (below the 50mm mark on the zooming ring). With very powerful close-up lenses, such as a +3 or
Minolta No. 2, vignetting may be noticeable below 100mm. Most step-up rings will cause vignetting. The Minolta Step-up Adapter 49mm to 62mm can be used."

It's the penultimate sentence I don't get - won't using a step-up adapter with 62mm filters/lenses reduce vignetting ?
I'll be wanting to use a polarising filter at the short end of the fl

Cheers 'n' Beers