Canon SLR Lens Terminology
The problem when it comes to selecting a digital SLR lens is that every manufacturer seems to delight in using different terminogly to describe what is essentially the same feature.
It makes sense why - no company wants to seem like a copycat.
The only problem is that you must learn a whole new set of acronyms for every manfuacturer when you're comparing digital SLR lenses.
Hopefully the following examples will help clarify the Canon SLR lens jargon for you.
Lens Example 1: Canon 50mm f/1.8
This first example is pretty straightforward - there's not a lot of acronyms that you have to decipher. This is an example of a prime lens, which is also called a fixed focal length lens.
Full Article here: http://www.digital-slr-guide.com/canon-slr-lenses.html
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