Now, it is possible to control a Nikon DSLR with iPhone!

An extraordinary smartphone, iPhone 4 proves to be a good remote control. It controls Macs, PCs and Apple TVs.

Recently, I came into a iPhone-based solution that even controls a DSLR! This solution, called BlueSLR, comprises a Bluetooth receiver that is connected to a Nikon DSLR and a Bluetooth-enabled iPhone 4.

The controller app on the iPhone 4 is used to send shutter release signal to the Bluetooth module attached to the DSLR. In addition, it transfers GPS information acquired by iPhone 4 to the DSLR, effectively functioning as a geotagger module.

Here is a nice review on that device.