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Understanding the Codes on Canon Lens

Posted by oneslidephotogaraphy On September - 13 - 2017

Canon Lens Code

As a rookie photographer who just learn about photography those codes written on the lens of your camera can be very confusing. There are some explanations on those written codes on canon lens here.

EF-S
EF here stands for “Electro focus”, while the S stands for “Small Image Circle”. It is called so because this lens has its own motor electronic to find focus automatically while the small image circle is there because the image which is transferred to the sensor is smaller than the image size on the EF lens. EF-S lens is specially designed for a non full-frame canon camera (the sensor size is smaller) and cannot be used for full frame camera. Apart from that, EF-S lens is usually used for low-end class lenses.

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