Cambridge in Color

[boels069]

Vernieuwde website met uitstekende tutorials (Engels):
http://www.cambridgeincolour.com/

[bobcom]

Niet vernieuwd, wel boordevol interessante tips en tuts:
http://www.luminous-landscape.com/

[Pieterr]

Ook niet vernieuwd, voor de wat diepergaande informatie over optica tbv fotografie: http://toothwalker.org/sitemap.html
Bevat o.a. een zeer uitgebreide verhandeling over scherptediepte (DOF).

CodeCOLON Alles selecteren

   I. Spherical aberration
  II. Astigmatism and field curvature
 III. Distortion
  IV. Chromatic aberrations
   V. Vignetting
  VI. Lens hoods
 VII. Flare
XIII. Filter flare
  IX. Depth of field
   X. Derivation of the DOF equations
  XI. VWDOF calculator
 XII. Bokeh
XIII. Spurious resolution
 XIV. Misconceptions
 XII. Center of perspective

Ook interessant zijn de misconceptions in photographic optics. De argumentatie wordt (uiteraard) op de site gegeven.

1. Long-focus lenses come with a narrow depth of field.
2. The rear DOF is twice the front DOF.
3. The depth of field only depends on the image magnification and the F-number.
4. Tele lenses have a flat perspective and wideangle lenses a steep perspective.
5. Wideangle lenses give rise to converging verticals.
6. With panoramic stitching, where the camera and lens are rotated as a unit, the rotation axis should pass through the lens nodal point.
7. When a lens is put on a camera with a smaller sensor, the focal length increases.
8. In a lens distortion graph, negative values correspond to barrel distortion and positive values to pincushion distortion.
9. A high-quality UV filter will never degrade the image quality.
10. When a lens is used at a small aperture, only a small part of the front lens is used.