On 8/22/2023 11:39 AM, coll...@brendemuehl.net wrote:
OF course. DSLR is, for the most part, better than mirrorless for focus
accuracy.
This actually isn't true. The (IMHO only) advantage of mirrorless is
focusing directly on the sensor rather than via a secondary method
(either focusing screen or an AF sensor that isn't on the imaging sensor.
For a DSLR to focus accurately, the secondary systems used must be in
absolutely perfect registration to the sensor, something that is next to
impossible to obtain in a consumer level device.
Contrast this with a mirrorless where there is no need for this
registration accuracy as focusing is done on the sensor plane.
With mirrorless, focus accuracy is primarily determined by the
resolution of the focus motor. With the DSLR, focus accuracy is
determined by the accuracy of placement of the focusing system, be it
the view screen or AF sensor, in relation to the sensor plane as well as
the resolution of the focus motor.
To get the same accuracy of focus in a DSLR, you need to use liveview,
effectively turning your DSLR into a mirrorless camera.
bill
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