| Year | 1952 |
| Date | 24-Jan |
| Volume | 106 |
| Issue | 2,644 |
| Page | 106 |
| Category | Photographic |
| Part | |
| Title | Camera Design. An article of great importance for those interested in photography |
| Author | Raymond F.Stock |
| Notes | Refraction at a glass surface, parallax, refraction through a tapered glass block, converging effect of a positive lens, optics, lens shapes, principal focus, object and image points, image formation, circles of confusion, distortion, practical lenses |