When we are looking for the meaning of a naming abbreviation or some acronyms written/marked on a Canon lens, it might be confusing to find out what these letters and terminology stand for, especially when we have just switched from another lens manufacturer.
Example of naming acronym with the Canon EF 70-200mm 1:2.8 L IS II USM : This lens is designed for full frame camera (EF), it is a zoom lens which can zoom between 70 and 200 millimeters with a constant maximum aperture of f/2.8 (1:2.8), it's a professional lens (L = Luxury) with an incorporated system against shaking (IS), it's a second generation lens or a second version because of the “II” and this lens has an ultrasonic motor (USM) for focusing.
Below is a list of the Canon lens abbreviation naming and acronyms with their meaning and for what these letters and numbers stand for.
The deprecated naming and acronyms are not listed, because if you got an old lens, i am sure that you know the exact meaning of the acronym, and this list of naming is mostly made to help the beginner.
You might also be interested with the last entry in the blog:
Nowadays our smartphones have more computer power than a 10 years old desktop computer. Technology is evolving fast and with it, the language acquiring new words like smartphone or selfie.
We are doing everything with our phone, from a GPS assistant to photograph or record a movie in full 1080p HD, even post processing those images, and i don't even speak about playing 3D games, read some news on internet and so on...
At the end, when we compare how we use our phone the most, in percentage, I can say safely that we barely use it to call someone, and this is why i call mine a photophone.
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