Chapter 18: Considering Lenses
When the EOS 70D was announced, Canon identified 103 lenses as compatible with the Dual Pixel CMOS AF system introduced as a major feature of the camera. There are dozens of other specialty lenses or older lenses that cannot operate in the automatic focusing and automatic exposure world of today’s lenses, but can be quite effective with manual adjustments on the EOS 70D.
Introduced in 1987, the EF lens system was Canon’s attempt to eliminate mechanical linkages between the camera body and the lens; the mechanical links were completely replaced with electrical communication between the camera and lens. Most of those ...
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