Recent postings on the list have convinced me I need an eyesight
corrections lens (well more than one, if it's one for each body).
Is there a way of working out what correction factor I need from the
prescription for my glasses ? That is, if I need +2.5 dipotre in reading
glasses and +1.5 for VDU work, what correction lens should I buy ?
P.S. Love the pancake lens which went with the FM3a. Only four elements
though, but rounded diaphragm for enhanced bokeh. My XA has a square
diaphragm. Is it bokehly challenged ?
Mike Bloor
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