2. The second, third and fourth digits of the code are the production batch. According to the production batch number (which may be repeated or different), the date of the batch number can be found by comparing it with the batch number saved by Canon. The batch number may be in a certain month or a certain month.
3. The number after the fifth digit of the code is the serial number of the fuselage, with one machine per code and no repetition. According to the serial number of the fuselage, the date of production can be found by comparing it with the serial number retained by Canon.
Extended data:
Service life of SLR camera:
Embedded classification is generally based on the shutter life of SLR:
Generally, entry-level digital SLR is 500-65438+ ten thousand times, such as Canon D60 and D5000.
Professional digital SLR is generally more than 1.5-0.2 million/200 thousand times, such as Canon D300 and D3.
The specific shutter life will be marked on the leaflet of the camera.
A reference value can be obtained by dividing the shutter life of the camera by the daily average shutter usage. For example, the life of the shutter is 65438+ million times, and it is used 200 times a day, which is 100000/200 = 500 days.
There is no strict definition of this life, unless it is broken artificially, the general lens can be used for several years or even more than ten years. The key is to be afraid that the lens will get dusty and moldy due to humidity.