Great digital back, but please be aware- I had one for less than a week, was really enjoying using it, but then decided to take infrared photos with it. An internal part broke and shorted the back out when I slid the lever to remove the IR filter, this is a design flaw that I did not know about when I removed it. There is a risk to removing the filter for any reason, even to clean the sensor. Some people have used Kodak backs for years taking IR photos and never had a problem, I was able to do it once. The repair would have cost more than the back was worth, luckily I was able to get credit for it (even in it's damaged state) towards the purchase of a Phase One P20+. Good luck with your back, hopefully it won't have this problem.