I took this photo using my Nikon D90 and a Nikon 50mm f/1.8D AF Nikkor lens. The RAW file has been processed in digiKam. I applied the cross-process effect (as described in the digiKam Recipes ebook) and sharpened the final result a bit.
Basic EXIF info:
Shutter speed: 1/640s
While digiKam won’t rival dedicated software for tethered shooting, you can use the application’s Import interface to trigger the connected camera and instantly fetch photos from it. This functionality can come in handy when you want to have an instant preview of photos you take on a large screen.
To make use of this feature, connect your camera to the machine running digiKam, and turn the camera on. In digiKam, choose Import → Cameras and select your camera model. You can then trigger the camera using the Capture button. There are a couple of things you need to keep in mind, though. digiKam can’t control camera settings (shooting mode, aperture, shutter speed, etc.) remotely, so you should set them beforehand. The images captured from within the Import interface are not stored on the camera’s storage card, so make sure you import them into digiKam before you disconnect or turn off the camera.
There is an embarrassing story that goes with this photo. Right after I took the photo, I sneezed and knocked over the camera mounted on a tripod. Of course, the lens hood of my Tamron AF 90mm f/2.8 SP Di macro lens landed directly on the delicate shell, crushing it into pieces. I’m such a klutz!
Further info: http://ocean.si.edu/ocean-photos/dazzling-new-sea-urchin-species
Full-size version: http://commons.wikimedia.org/wiki/File:Coelopleurus_exquisitus_(Macro).jpg