Is pentaprism better than pentamirror?

Started Nov 1, 2012 | Discussions thread
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Jim in Hudson Senior Member • Posts: 1,898
Re: Is pentaprism better than pentamirror?

hanhait wrote:

The pentaprism is a solid piece of glass and uses total internal reflection so it is as bright as possible. The pentamirror consists of mirrors so some light is lost at each reflection.

So basically it is some brightness they could be different in, for the rest it is a design matter for what glasses the viewfinder is optimized. Whether it is a prism or mirror is independent of that.

Perhaps so but I think every pentamirror camera I've looked through gave a lower magnification image (smaller in appearance) than every pentaprism camera I compared with.

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