The more you use the more fascinating, with a maximum of about 8 / s, 15 million times the life of the shutter unit
EOS 7D uses a newly developed non-contact electromagnetic rotary speed electronically controlled mechanical focal plane shutter, and its basic structure inherited the EOS 5D Mark II has been successfully applied on the shutter unit. And use with the EOS-1D series of the same material, reaching about 15 million times a shutter life. Non-contact rotary solenoid shutter unit has no physical contact with the unique surface structure, with a less there because of dust, oil and were attached to, or wear down causing malfunction and accuracy advantages.
این 15 میلیون که تو متن فوق اشاره شده مد نظرم بود.
اون 150000 شاتی که جناب فرهاد اشاره کرده بودند من به نظرم اومد که اشاره به عمر شاتر 5dII داره و به ارث بردن basic structure شاتر 5dII رو فقط به 7دی ارجاع داده و نه دقیقا خود عمر شاتر 5dII