Canon DSLR camera’s use three counters: Shutter Count, Mirror Count, and Total Count. Canon DSLRs also have Shutter and Mirror Replacement Histories to give a complete picture of the camera. Together, they are the cameras odometer / mileage indicator.
Although there are numerous 3rd party software that claim to read Shutter Counts, some free and some not, in our experience these 3rd party software only read ‘Total Count’. This has caused allot of confusion with owners, sellers and buyers.
Our Canon Service Adjustment Software is the ‘ONLY’ software that can do a deep dive into the camera, read all three counts AND the Shutter and Mirror Replacement Histories. It is both simple and automatic!
Additionally the information is imported into Camera FAX! Just click ‘Camera FAX Report’ and print it as a pdf for you or your customers.
Shutter Count records the number of activations of the ‘current Shutter’.
DSLR camera see a high number of pictures and shutter replacement is a common service. Each time the Shutter is replaced the Shutter Count should reset so that the count is accurate for the new Shutter.
To change the Shutter Count:
- Type in the new count number … ‘0’.
- ‘Click’ Change and the new Shutter count will be written into the camera.
* If your camera records Shutter History, it will now record the Shutter replacement date.
Mirror Count records the number of activations of the ‘current Mirror Unit’.
Although less common, Mirror Unit replacement is a standard repair service typically with professional and serious photo buffs. Each time the Mirror Unit is replaced the Mirror Count should reset so that the count is accurate for the new Mirror Unit.
To change the Mirror Unit Count:
- Type in the new count … ‘0’.
- Click ‘Change’ and the new Mirror count will be written into the camera.
* If your camera records Mirror Unit History, it will now record the Mirror Unit replacement date.
Total Count records the number of activations for the camera.
The Total Count is a record on ‘All’ activations the camera has seen. If either the Shutter or Mirror Unit were replaced, the Total Count would be different then the Shutter and Mirror Counts.
Displaying different counts was the only way earlier Canon DSLR cameras had to show that either the Shutter or Mirror had been replaced. A little confusing and open to interpretation!
Later Canon DSLRs recorded both Shutter and Mirror Unit replacements date histories. This give the owner, seller or buyer a full view of the camera.
Normally do not change the Total Count! But if it is necessary use one of the following methods.
Cameras without Service History Records
To change the Total Count:
- Type in the new Total count.
- Click ‘Change’ and the new Total count will be written into the camera.
* These cameras will have a ‘Change’ button next to the Total Count.
Cameras with Service History Records
To change the Total Count:
- Clear the Shutter or Mirror Histories inside the Shutter Plugin
- Correct the Shutter or Mirror counts until the all Counts are correct.
* These cameras will NOT have a ‘Change’ button next to the Total Count. They will have the Shutter and Mirror Histories records in the Shutter Plugin.