The worst thing about the DF is the Disappointment

Started Nov 9, 2013 | Discussions thread
new boyz Regular Member • Posts: 360
Re: The worst thing about the DF is the Disappointment

larrywilson wrote:

Why can't a good focusing screen be designed into a modern camera?

Maybe because modern DSLR mirror reflects only 70% of the light to the focusing screen, lets 30% of the light pass - that will then be deflected by the second mirror to the focusing module.

Older mirror reflects 100% of the incoming light as they don't have any focusing sensor. Light meter is located on the prism itself.

If an older focusing screen used in the new camera, the viewfinder will be darker simply because it got less light.

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