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EF vs EF-S practical difference ?

Started Jul 23, 2018 | Discussions thread
Rock and Rollei Senior Member • Posts: 2,916
Re: EF vs EF-S practical difference ?
2

In addition to what's been said, the difference is actually clear in the name - S. It stands for "Short back focus" - it allows the rear element to be physically closer to the sensor than in an EF lens, because it has a smaller mirror to clear. And that, as well as the smaller image circle, is what allows lens designers a bit more freedom to produce cheaper, smaller and lighter lenses which retain reasonable quality.

 Rock and Rollei's gear list:Rock and Rollei's gear list
Canon EOS 5DS R Canon EOS 5D Mark IV Canon EOS R Canon EOS M6 II Canon EF 50mm f/1.2L USM +29 more
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