spiders

A Review of the Olympus STF-8 Macro Twin Flash

Last year, Olympus Singapore loaned me a pre-launch unit of their new STF-8 Macro Twin Flash, together with their OM-D E-M1 and M.Zuiko Digital ED 60mm f/2.8 Macro for a test-run in the field. I've had the set for about a week -- it was easy to use and the results were pretty good, although it took some time for me to get used to focusing using the LCD.

Jumping Spiders’ Eyes May Inspire New Camera Technologies

In a paper published in Science this week, Japanese researchers reported on a discovery that jumping spiders use a method for gauging distance called "image defocus", which no other living organism is known to use. Rather than use focusing and stereoscopic vision like humans or head-wobbling motion parallax like birds, the spiders have two green-detecting layers in their eyes -- one in focus and one not. By comparing the two, the spiders can determine the distance from objects. Scientists discovered that bathing spiders in pure red light "breaks" their distance measuring ability.