The sensitivity range for autofocus is -1EV to 20EV, so it loses out for extremely low-light focusing to the Canon. Sensor-based autofocus systems can be slow, but Sony claims a 30% increase in autofocus speed for its hybrid system over the original A7, and a 50% improvement in AF tracking performance. Without a reflex mirror, there's no facility for having a separate autofocus module. The viewfinder is a high-quality pentaprism unit that gives a bright and super-sharp display, with 100% frame coverage.įor its part, the Sony has a hybrid phase/contrast autofocus system with 117 active points on the image sensor. The 22.3 megapixel-count of the image sensor is modest by the latest standards, but it helps to enable an enormous sensitivity range of ISO 100-25,600 (50-102,400 expanded). Highlights include a 61-point autofocus module with 41 cross-type points and five double-cross points, 63-zone metering, and a working range of -2EV to 18EV. Billed by Canon as a professional-grade camera, the 5D Mk III has an exotic feature set.
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