PetaPixel

Laser Pointer Used as an AF Assist Tool

Photographer Adrian Onsen wanted to use the AI Servo autofocus mode on his Canon 40D in low-light situations, but found that the AF assist beam is only emitted once until focus is achieved rather than every time the camera needs to refocus. He then purchased a laser pointer from a dollar store, disassembled it to obtain a defocused beam of light, and attached it to the top of his camera. The hacked-together AF assist tool ended up working pretty well — Onsen was able to shoot sharper photos at a dance club without anyone noticing the extra light. To learn more check out his in-depth writeup here.

AF Assist tool (via Hack a Day)


 
 
  • http://www.facebook.com/people/Khip-Ormsby/584046705 Khip Ormsby

    No big deal. I’ve been using a laser pointer as a manual focus assist for a while now. It’s the best way to focus at night that I’ve found. And it doesn’t disturb the nature. :D

  • http://www.facebook.com/people/Khip-Ormsby/584046705 Khip Ormsby

    No big deal. I’ve been using a laser pointer as a manual focus assist for a while now. It’s the best way to focus at night that I’ve found. And it doesn’t disturb the nature. :D

  • http://www.facebook.com/joakim.bidebo Joakim Bidebo

    I see one big issue tho with this system since you often wanna focus on the subject eyes and pointing a laser into a animal or persons eyes ain’t a good thing.

    But for the rest of subjects it should work perfectly…

  • bri

    can’t you use a 580ex this way and just disable the flash?

  • Torn_faith

    haha just use a nikon…

  • Aonsen

    The 580ex or nikons don’t put out a continuous af assist light in AI servo mode.

  • WILLIAMZ AlphaShooter

    Or Use a Sony Alpha a700 and a77 (APS-C), a850 and a900 (FF).