Specifications


Focal length 8mm (35mm equivalent focal length: 16mm)
Maximum / Minimum aperture F3.5 / F22
Lens construction 10 elements in 6 groups (1 ED lens)
Splashproofing Dustproof/splashproof mechanism
Angle of view 180°
Closest focusing distance 0.135m
Maximum image magnification 0.22x (35mm equivalent maximum image magnification:0.44x)
Minimum field size 75 x 132mm
Number of diaphragm blades 7 (circular aperture diaphragm)
Filter size -
Dimension (max. diameter x total length) Ø79 x 77mm
Weight 485g

Depth of field

When focusing on a subject, there is an area behind and in front of the focused point that is also in focus. This area is called depth of field. The amount of area behind a focused point will always be greater than the area in front of the focused point regardless of aperture. Depth of field becomes deeper when the focal length is short (wide-angle lens), the focusing distance is long, and aperture is small.

Depth of field table (focal length: 8mm)

  0.135 0.3 0.4 0.5 0.7 1.0 2.0 3.0 5.0
3.5 0.134 ~ 0.136 0.268 ~ 0.348 0.333 ~ 0.519 0.390 ~ 0.742 0.483 ~ 1.470 0.588 ~ 5.718 0.784 ~ ∞ 0.882 ~ ∞ 0.979 ~ ∞ 1.173 ~ ∞
4 0.134 ~ 0.137 0.264 ~ 0.355 0.327 ~ 0.542 0.380 ~ 0.795 0.466 ~ 1.735 0.561 ~ 16.562 0.733 ~ ∞ 0.816 ~ ∞ 0.898 ~ ∞ 1.055 ~ ∞
5.6 0.133 ~ 0.137 0.253 ~ 0.388 0.306 ~ 0.647 0.349 ~ 1.095 0.415 ~ 5.637 0.483 ~ ∞ 0.596 ~ ∞ 0.645 ~ ∞ 0.691 ~ ∞ 0.773 ~ ∞
8 0.132 ~ 0.138 0.239 ~ 0.451 0.282 ~ 0.928 0.315 ~ 2.675 0.363 ~ ∞ 0.409 ~ ∞ 0.479 ~ ∞ 0.507 ~ ∞ 0.533 ~ ∞ 0.575 ~ ∞
11 0.131 ~ 0.140 0.223 ~ 0.607 0.256 ~ 3.032 0.280 ~ ∞ 0.313 ~ ∞ 0.342 ~ ∞ 0.384 ~ ∞ 0.399 ~ ∞ 0.413 ~ ∞ 0.435 ~ ∞
16 0.130 ~ 0.142 0.206 ~ 1.464 0.230 ~ ∞ 0.246 ~ ∞ 0.268 ~ ∞ 0.285 ~ ∞ 0.309 ~ ∞ 0.317 ~ ∞ 0.324 ~ ∞ 0.336 ~ ∞
22 0.128 ~ 0.146 0.189 ~ ∞ 0.205 ~ ∞ 0.215 ~ ∞ 0.228 ~ ∞ 0.239 ~ ∞ 0.252 ~ ∞ 0.256 ~ ∞ 0.260 ~ ∞ 0.265 ~ ∞

Columns: aperture values Rows: focusing distance (m)*1

  • 1: The diameter of the permissible circle of confusion is 1/60mm.
  • Specifications are subject to change without notice.

Share