I like this photo because it shows off new technology for my client and the people in the shot look real and engaged. I was happy to have been able to light the entire scene with one overhead fluorescent fixture and four Fotodiox 312AS LED panels. I wanted the image to be "readable" and printable (no shadows blocking up, no highlights burned out) but I didn't want it to seem obviously lit.
In the shooting process my first consideration was to find the right angle to show off the machine and also be flattering for the models. The room we were shooting in is very small so the slim profile of the LED panels was a real plus. One panel that was behind me and to the left was used bounced against a wall and the space was so tight we couldn't get a stand in. I attached the light to a small table top tripod and balanced it on top of a small medical tray. Two lights, covered with diffusion material were used outside the door while the fourth was aimed at the equipment in the background so it didn't drop in tonal value. Everything was balanced in intensity to match the white curtained window at the back of the frame.
The use of a shorter than typical (for me) focal length helped to create a feeling of depth to the shot. My biggest challenge was to get enough light on the face of the technician on the left without blowing out too much highlight detail on the "patient's" white robe.
All of the above parameters were put into place first and then we stuck in the camera. I did a quick custom white balance from the robe and set a manual exposure on the camera. I was using the Sony a77 and the (nice) 16-50mm f2.8 kit lens. It's a bit noisier than my current cameras but light years better than earlier generations of cameras.
I am happy with the shot and in retrospect there are very few (if any) things that I would change.
There is the belief that the camera and lens are the vital parts of the process but by my reckoning they are a distant fourth place behind being able to visualize what you want to achieve, figuring out how to light it for depth and detail, getting the right poses, expressions and gestures from the talent and getting the shot styled the way you want. Once you've done those things just about any camera with the right focal length lens on the front will do the job.
The nicest thing for me about this job was having a client who understands the difference between a narrative style photo illustration and just another documentation of a machine. That's the best case scenario for working photographers.