Chromatic aberration gets worse with glass curvature aka magnification.
A +1 isn't straining much of anything. The achromats become more
necessary as the magnification goes up.
On 5/6/2016 6:18 PM, Mike Gordon via olympus wrote:
There are several sites summarizing the achromatic diopters available. I am
slightly puzzled as to why they are not all that readily available in lower
I like this site:
Themed Olympus Photo Exhibition: http://www.tope.nl/