The two distinct types of lenses are the "rapid rectilinear" and the "anastigmatic," which names refer to their optical properties in distributing the light.    From Wordnik.com.  [Outdoor Sports and Games] Reference

The lens should be a modern anastigmatic by a good maker.    From Wordnik.com.  [How to Observe in Archaeology] Reference

You are too conscious of the soft focus lens and of the anastigmatic lens.    From Wordnik.com.  [Pictorial Photography in America 1921] Reference

That is, one part of the picture is made with a soft focus lens and one with an anastigmatic.    From Wordnik.com.  [Pictorial Photography in America 1921] Reference

My expensive anastigmatic and my several diffused lenses standard tools for the Pictorialist photographer seem destined to contemptuous neglect, though it may be that I shall dust them off for an occasional portrait head.    From Wordnik.com.  [Covered and Uncovered] Reference

Mutual life insurance company pembroke up from his commiseration horrifyingly, the spatially of a anastigmatic cicadidae preservative circumscribed his penuchle a effortful windaus.    From Wordnik.com.  [Rational Review] Reference

THERE is no country in which an anastigmatic lens is of more use to the photographer than Alaska, and every camera with which it is hoped to take winter scenes should have this equipment.    From Wordnik.com.  [Ten Thousand Miles with a Dog Sled A Narrative of Winter Travel in Interior Alaska] Reference

With an anastigmatic lens working at, say f. 6-3, and with a "speed" film (glass plates are utterly out of the question on the trail), it is possible to make a snap-shot at one twenty-fifth of a second on a clear day, around noon, even in the dead of winter, in any part of Alaska that the writer has travelled in.    From Wordnik.com.  [Ten Thousand Miles with a Dog Sled A Narrative of Winter Travel in Interior Alaska] Reference