This is such a practical drawback that the separation is generally 4ths or $ths of the theoretical, and then the primary image viewed by the eye piece may be rather outside the field-lens, which is a great practical advantage, especially when a reticule has to be mounted in the primary focal plane, although the edge of the field is not quite achromatic under these conditions.
She took a pair of pear-shaped ruby earrings from her huge reticule and, having given them to the rosy Natasha, who beamed with the pleasure of her saint's-day fete, turned away at once and addressed herself to Pierre.
Her enormous figure stood erect, her powerful arms hanging down (she had handed her reticule to the countess), and only her stern but handsome face really joined in the dance.
Promise, Andrusha!... said she, putting her hand in her reticule but not yet taking out what she was holding inside it, as if what she held were the subject of her request and must not be shown before the request was granted.
Then I played cards with her and picked up her reticule and drove out with her.
Having found what she was looking for in the reticule she handed it to Natasha.
Mademoiselle Bourienne took from her reticule a proclamation (not printed on ordinary Russian paper) of General Rameau's, telling people not to leave their homes and that the French authorities would afford them proper protection.
And the countess bent over her reticule to hide her agitated face.