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Understanding Canon Shot Counts (Shutter, Mirror, Total)

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:

  1. Type in the new count number …  ‘0’.
  2. ‘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:

  1. Type in the new count …  ‘0’.
  2. 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:

  1. Type in the new Total count.
  2. 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:

  1. Clear the Shutter or Mirror Histories inside the Shutter Plugin
  2. 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.

 
 
 
 
 
Understanding Crosspoint Screwdrivers used for Camera Repair

Screwdrivers for Japanese lenses and cameras are crosspoint screwdriver blades manufacutred to meet JIS (Japanese Industry Standard).  JIS crosspoint screwdriver blades are designed to fit the crosspoint screws used in cameras and lenses.  Cameras and lenses use the following crosspoint screw bit sizes:  1.7mm2.0mm and 2.5mm.

 

Back to Screwdriver Blades and Handles

 

Although a ‘search’ for screwdrivers for camera repair will turn up other sources, a close look at the heads of the screwdriver blades show that most are really Phillips 00 or 000 blades.  They are NOT crosspoint screwdriver blades!  It will drive you crazy when you strip the screw head and spend hours trying to get the it out … NOT FUN!  This will happen sooner or later if you don't buy good JIS bits.  

 

Phillips bits have a tendency to round out the centers of JIS screw heads because their design will not allow them to fit all the way into the cross slots.  You can why through these illustrations:

The crosspoint tip and the temper of the blades are important if you don't want to damage the screws.  The fit of the blade must feel perfect, ‘fits like a socket’.  The temper must be hard enough to be durable but not so hard that the blade is brittle.  

In the past we all bought NIWA JIS screwdrivers … but NIWA has been out of business for many years.  At first we tried to make due with screwdrivers available in the general market.  Most were actually Philips bits which damaged the screws, the few that fit did not have the necessary temper and broke quickly.    

 

SPT manufactures JIS crosspoint camera screwdriver blades to meet the needs of professional camera technicians who were dissatisfied with the camera repair screwdriver blades available on the market.  For over 10 years professional camera technicians and business rank our JIS camera repair crosspoint screwdrivers and blades‘Best Camera Screwdrivers’ becuase of their fit and durability.

 
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Canon Service Adjustment Software

Canon Service Software Canon Adjustment Software
Camera FAX Shutter Calibration
General Information Auto Exposure Calibration
   
   
   
   
   
   
   
   

 

xxxx

 

 
  Camera FAX General  Data Files
       

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