Client had an Error 99 and needed their camera the next day for a wedding shoot. With client at the counter I used this software and was able to determine that the error started back at exposure 85,428 and progressively got worse until 126,785. Lenses used were listed with each occurrence of the error. Problem was a bad shutter. Unknown to me two other customer in the lobby had the same camera and were listening in on the dialogue. Once they saw what I was able to do they came up to the counter [...read more]