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EF vs EF-S practical difference ?

Started Jul 23, 2018 | Discussions thread
MarshallG
MarshallG Veteran Member • Posts: 8,968
Re: EF vs EF-S practical difference ?
3

A full-frame camera has a sensor that’s 2.5x larger than an APS-C camera. It’s possible to build smaller, lighter lenses which can focus an image onto the 2.5x smaller APS-C area.

That’s what EF-S lenses are: Lenses designed to focus onto a smaller area. This is why they are smaller and lighter, but this doesn’t make them lower quality.  Of course, they are intended for a higher volume consumer market, which is more price sensitive, so you won’t see exotic lens construction techniques such as aspherical design and fluorite coatings.  The general philosophy with Canon and Nikon is that when people buy expensive lenses, they’ll want them to work with both APS-C and full frame.

 MarshallG's gear list:MarshallG's gear list
Canon EOS R5 Canon EF 50mm F1.4 USM Canon EF 85mm F1.8 USM Canon EF 16-35mm F2.8L II USM Canon Extender EF 1.4x II +4 more
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