An Interesting Auto-Focus Fine Tuning Method

DotTune: Autofocus fine tuning in under 5 minutes

An interesting method found on YouTube:

Test Image 6

_IGP0747-2

  • Aperture: ƒ/9.5
  • Camera: PENTAX K200D
  • Focal length: 55mm
  • ISO: 100
  • Shutter speed: 1/30s

Test Image 5

_IGP0883_4_5_6_7_8-2

  • Aperture: ƒ/11
  • Camera: PENTAX K200D
  • Focal length: 20mm
  • ISO: 100
  • Shutter speed: 1/30s

Test Image 4

_IGP1806

  • Camera: PENTAX K200D
  • Exposure bias: +1EV
  • Focal length: 135mm
  • ISO: 100
  • Shutter speed: 1/125s

Test Image 3

_IGP2660-2

  • Aperture: ƒ/11
  • Camera: PENTAX K200D
  • Focal length: 35mm
  • ISO: 100
  • Shutter speed: 1/30s

Test Image 2

_IGP3285-2

  • Aperture: ƒ/2.4
  • Camera: PENTAX K200D
  • Exposure bias: -2EV
  • Focal length: 70mm
  • ISO: 100
  • Shutter speed: 1/10s

Test Image 1

_IGP5107

  • Aperture: ƒ/13
  • Camera: PENTAX K200D
  • Exposure bias: -1EV
  • Focal length: 35mm
  • ISO: 100
  • Shutter speed: 1s