Infrared photography
In article ,
Whiskers wrote:
It isn't clear from the user manual; the specification only says 'through
the lens autofocus'
that's the key. it's off the sensor, not something separate.
but there is also an 'autofocus lamp' on the camera
body. Perhaps that is only there to ensure sufficient illumination for
the TTL 'contrast detection' system to work?
yep.
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