Listing all links for July 2009

Thursday, July 30th 2009

Sunday, July 19th 2009

Invisible flash takes photos without the glare

The Null Device links to the ‘dark flash’, which is an infrared flash that could turn bright flashes in the night obsolete (saving all those people in say, football stadiums, the embarrassement of being seen using a light source with a range of 8 meters to snap a picture of the far side goal). But I started thinking, isn’t this something you can already do. There are plenty of tutorials on how to remove your camera sensor’s infrared filter, and I’m pretty sure you can fit a IR-transmitting filter to a flash to achieve the same effect. Lots of interesting exposure calculations (as you need to compensate exposure in higher wavelenghts) will follow, I’m sure.

Wednesday, July 8th 2009