When testing lenses, I have to make sure that my setup is calibrated and the camera is perfectly aligned with the test chart. The process can take quite a bit of time, since I have to take a picture, make minute adjustments, then take another picture and retest again. In some cases I have to repeat the process many times over, which can be very painful. To simplify and speed-up the process, I have been connecting my laptop (which sits right under the tripod) directly to the Nikon D800E with a USB cable and have been using Nikon’s Camera Control Pro to dump files into a local folder, from which I pick up and process images using Imatest software. The problem with this approach has been speed – Imatest is pretty demanding when it comes to processing large RAW files from the D800E and my laptop just could not keep up. So I ended up moving the software to my powerful desktop machine, which created another problem. Every time I take a picture and need adjustments, I have to walk back and forth between the camera setup and the computer to analyze the results and make adjustments. USB 3 cables have length limitations and even with “active” USB 3 extension cables, the maximum length is typically under 10 meters. And that’s just not going to work for me, since I often test telephoto lenses and I have to be more than 10 meters away. To address these issues, I decided to try some wireless solutions that are available on the market. The first and the cheapest product to try was the Eye-Fi Pro X2 memory card. I got a 16 GB version and wanted to see just how well the card with its software could work for my setup. In this review, I will be focusing primarily on the transfer speed of the card and its usability with the Nikon D800 / D800E DSLR.
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