Specifications


Focal Length 25mm (35mm Equivalent Focal Length: 50mm)
Lens Construction 19 elements in 14 groups (1 Super ED lenses, 2 ED lenses, 1 E-HR lenses, 3 HR lenses,1 aspherical lens)
Splashproofing Dustproof and splashproof contsruction
Focusing System High-speed Imager AF (MSC)
Angle of View 47 degrees
Closest Focusing Distance 0.3 m
Maximum Image Magnification 0.11x (35mm Equivalent Max. Image Magnification: 0.22x)
Minimum Field Size 157 x 118 mm
Number of Blades 9 (circular aperture diaphragm)
Maximum Aperture f/1.2
Minimum Aperture f/16
Filter Size Diameter: 62 mm
Dimensions Ø70 x 87 mm
Weight 410 g
Box Contents LH-66B Lens Hood, LC-62F Lens Cap, LR-2 Lens Rear Cap, LSC-0811 Lens Case, instruction manual, warranty card

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 tables (focal length: 25mm)

Columns: aperture values / Rows: focusing distance (m) [1]
  0.3 0.4 0.5 0.6 0.7 1 2 3 5
1.2 0.298 to 0.302 0.397 to 0.404 0.494 to 0.506 0.591 to 0.609 0.687 to 0.714 0.972 to 1.030 1.881 to 2.136 2.734 to 3.326 4.289 to 6.000 29.35 to ∞
2.0 0.297 to 0.303 0.395 to 0.406 0.491 to 0.510 0.586 to 0.615 0.680 to 0.721 0.957 to 1.048 1.822 to 2.219 2.607 to 3.538 3.978 to 6.750 18.81 to ∞
2.8 0.296 to 0.304 0.392 to 0.408 0.487 to 0.514 0.580 to 0.621 0.672 to 0.730 0.940 to 1.069 1.757 to 2.325 2.473 to 3.825 3.668 to 7.908 13.32 to ∞
4 0.295 to 0.305 0.389 to 0.411 0.482 to 0.520 0.573 to 0.631 0.661 to 0.744 0.918 to 1.101 1.673 to 2.496 2.306 to 4.326 3.305 to 10.46 9.450 to ∞
5.6 0.293 to 0.308 0.385 to 0.416 0.475 to 0.529 0.562 to 0.644 0.647 to 0.764 0.888 to 1.149 1.568 to 2.786 2.106 to 5.310 2.903 to 19.31 6.703 to ∞
8 0.290 to 0.311 0.379 to 0.424 0.465 to 0.542 0.548 to 0.665 0.627 to 0.795 0.849 to 1.226 1.442 to 3.339 1.879 to 7.866 2.480 to ∞ 4.768 to ∞
11 0.286 to 0.316 0.372 to 0.434 0.453 to 0.561 0.529 to 0.697 0.602 to 0.843 0.800 to 1.356 1.296 to 4.667 1.632 to 25.28 2.061 to ∞ 3.397 to ∞
16 0.281 to 0.323 0.361 to 0.451 0.436 to 0.592 0.506 to 0.749 0.570 to 0.925 0.741 to 1.599 1.136 to 10.89 1.381 to ∞ 1.669 to ∞ 2.427 to ∞
  • 1 The diameter of the permissible circle of confusion is 1/60mm.
  • Specifications are subject to change without notice.

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