Six ingenious ways how Canon DSLRs used to illuminate their autofocus points
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This article presents the inventive solutions Canon has found to shoot beams of light into the camera's viewfinder in order to light up individual autofocus points. Six different approaches are shown using six Canon DSLR models between 1994 and 2009.
It's absolutely wild to me that this function would be so important as to justify all the time and effort to create not just two, but six entirely different ways of solving it.
The first one seemed perfectly adequate to me. But I guess that's why I'm not a Canon engineer.
@ExAr I suspect your comment was downvoted to oblivion because people didn't realize you're the OP and thought you were an LLM summarizer bot :(
The comment reads like an LLM summary. And we don’t typically get an OP summary on a new post. Just post it and let people read it.
HN appears to encourage it, because it shows a text box which becomes a top level comment when you submit, although it isn't obvious that will happen.
Huh, that definitely explains it. I wonder how many people know that. In that case it's particularly unfortunate to downvote the OP simply for filling a field in the submission form! Sigh… I guess it's another case of LLMs having made the world a little worse for everybody.
I don’t think it’s because the comment was submitted. I think it’s because it reads like LLM output.
Personally, I’ve only ever provided a summary if I felt the headline wasn’t clear enough.
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That's perfectly ok, they're using HN almost exclusively for promotion. See comment/submission history.
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Does AF use LIDAR nowadays?
hijacking the thread to ask: under 200€ DSLR to get started?
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You can get a Canon 5D II or a Canon 6D for that. Older cameras for sure, but full frame with excellent sensors. And there are a ton of inexpensive used EF lenses available.
Compared to moderns systems the main difference is the autofocus and video capabilities. Modern mirrorless have cosmically better tracking, eye detect etc.
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