Why Must AF-Assist Light Be Visible?

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Clickalot
Clickalot Regular Member • Posts: 330
Why Must AF-Assist Light Be Visible?

I remember the first AF cameras in the 80's; you saw no light projected when their AF went to work. IR, presumably.

Silent camera or no, it puts the kibosh on low-light candid shooting when you have to paint your subject with red or green light.

Thinking inversely, if one is stuck with a visible assist light, has anyone heard of something like a dedicated, hotshoe mounted unit with a more powerful beam to permit focusing at a longer range than the feeble built-in emitter?

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