The reason why you should check your DSLR shutter count. Do you know, DSLRs have their own life time? It is based on how many counts of the shutter releases. When you exceeded the shutter count limit, it is time to change your DSLR with a new one or replace with a new shutter.
Almost current DSLR models put the shutter count information inside the pictures. The information is located in the pictures metadata and can only be viewed by using special software like Opanda IExif .
As you can see at the above image, the shutter count for that picture is 1706. But that picture was taken on last two weeks ago. My latest shutter count is 2096. Still young and virgin.
After you have downloaded and installed Opanda IExif, right click on your latest picture taken with your DSLR, then choose “View Iexif\GPS\IPTC with IExif”. Scroll down until you see “Total Number of Shutter Releases for Camera” and you will get your latest DSLR shutter count value.
CypherHackz: Do not know what is my Nikon D90 shutter count limit.