Editing Normal lens (section)

===Cinema===
In [[cinematography]], a [[focal length]] roughly equivalent to twice the diagonal of the image projected within the [[camera]] is considered normal, since movies are typically viewed from a distance of about twice the screen diagonal.<ref>Anton Wilson, ''Anton Wilson's Cinema Workshop'', American Cinematographer, 2004 (Page 100) [https://books.google.com/books?id=18Ck5PZX_ZsC&dq=cinematography+normal-lens&pg=PA101 online].</ref>

{| class="wikitable"
|-
! Film format !! Image dimensions !! Image diagonal !! Normal lens focal length
|-
| [[8 mm film|Standard 8]]
| 3.7 × 4.9&nbsp;mm
| 6.11&nbsp;mm
| 12–15&nbsp;mm
|-
| [[8 mm film|Single-8]] (FUJI)
| 4.2 × 6.2&nbsp;mm
| 7.5&nbsp;mm
| 15–17&nbsp;mm
|-
| [[Super 8 mm film|Super-8]]
| 4.2 × 6.2&nbsp;mm
| 7.5&nbsp;mm
| 15–17&nbsp;mm
|-
| [[9.5 mm film|9.5&nbsp;mm]]
| 6.5 × 8.5&nbsp;mm
| 10.7&nbsp;mm
| 20&nbsp;mm
|-
| [[16 mm film|16&nbsp;mm]]
| 7.5 × 10.3&nbsp;mm
| 12.7&nbsp;mm
| 25&nbsp;mm
|-
| [[35mm movie film|35&nbsp;mm]]
| 18.0 × 24.0&nbsp;mm
| 30.0&nbsp;mm
| 60&nbsp;mm
|-
| [[35mm movie film|35&nbsp;mm]], sound
| 16.0 × 22.0&nbsp;mm
| 27.2&nbsp;mm
| 50&nbsp;mm
|-
| [[65 mm film|65&nbsp;mm]]
| 52.6 × 23.0&nbsp;mm
| 57.4&nbsp;mm
| 125&nbsp;mm
|-
|}