MIL-STD-1950A Military Standard Photographic Lenses

Contents

• Introduction
• Title Page [p. i]
• p. ii
• Contents
  • p. iii, p. iv, p. v, p. vi, p. vii, p. viii, p. ix
• Chapter 1. Scope
  • p. 1 (Purpose, Classification)
• Chapter 2. Reference Documents [Empty]
• Chapter 3. Definitions
  • p. 2 (Axes, Points, and Distances)
  • p. 3
  • p. 4 (Aperture and Related Quantities)
  • p. 5
  • p. 6 (Constructional Features)
  • p. 7 (Mechanical and Structural Features, Field of View, Optical Characteristics)
  • p. 8, p. 9, p. 10, p. 11, p. 12, p. 13, p. 14
  • p. 15 (Miscellaneous Features)
  • p. 16 (Beauty Defects)
  • p. 17
• Chapter 4. General Requirements
  • p. 18 (Markings)
• Chapter 5. Detail Requirements
  • Methods of Test and Measurement
    • p. 19 (Test Apparatus)
    • p. 20 (Resolving Power Target)
    • p. 21 (Resolving Power Target cont'd, Test Methods)
    • p. 22, p. 23, p. 24, p. 25, p. 26, p. 27, p. 28, p. 29, p. 30, p. 31, p. 32, p. 33, p. 34, p. 35, p. 36, p. 37
• [Chapters 6 - 9 did not exist]
• Appendix (Chapter 10: Reference Material)
  • p. 38 (General, Lens Mounting and Other Requirements)
  • p. 39 (Ordering Data Reference List)
  • p. 40, p. 41
  • p. 42 (References)
  • p. 43, p. 44, p. 45, p. 46, p. 47
• Index
  • p. 48, p. 49, p. 50, p. 51, p. 52

Introduction

This is a reprint, in the form of scanned images, of US Military Standard 150A ("MIL-STD-150A"), Military Standard Photographic Lenses, of 12 May 1959.

This document has been available online from the United States Department of Defense's online services. However, the version so available is a low-resolution scan in which critical figures in the paragraph defining the six-bar core of the "resolving power target" are not legible. Here is an enlarged image of this section from that version:

If you're just interested in the resolving power test target definition, go directly to page 20 and page 21 of the present reprint.

Note that this definition only specifies the six-bar "Standard Resolving Power Test Target Element." The full test target, commonly known as the "US Air Force 1951 resolving power test target," consists of a set of these arranged in a generally spiral pattern.

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