micro 4/3 . the begining of the end of the SLR?

Started Aug 5, 2008 | Discussions thread
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ngap Senior Member • Posts: 1,860
Re: Nikon and Canon are busy........

RobertMartinu wrote:

You could use a beam splitter. Just lock the mirror and move the
sensor to the spot normally occupied by that grounded piece of glass.
At least thats the way they did it in AF capable video cameras until
contrast detection became an option...

Drawback: you loose half a stop or so of light
Benefit: AF servo works really continuous, no such thing as "D3 does
11fps only on MF", as well as cleaner data for every AF.

That's what I thought and why I asked. So you have the choice of a moving mirror, that doesn't effect the amount of exposure possible by the camera or another permanently mounted beam splitter that reduces the possible light levels if you want phase AF or non-sensor exposure readings

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