Possible Duplicate:
What is the difference between focal length and crop factor?
I see the term "crop factor" used to describe some DSLRs (for example, the Canon 7D has a 1.6x crop factor). What does this mean?
Possible Duplicate:
What is the difference between focal length and crop factor?
I see the term "crop factor" used to describe some DSLRs (for example, the Canon 7D has a 1.6x crop factor). What does this mean?