Why m4/3rds is declining in the US.

Started Apr 29, 2013 | Discussions thread
Hen3ry Forum Pro • Posts: 18,218
Flapping mirrors

Rmark wrote:

Actually I believe EVF are much cheaper than a well engineered pentaprism and mirror on optical viewfinders.  I don't think optical viewfinders will be buried any sooner than windshields in cars are replace by digital displays , or windows in houses replaced by CCTV and widow sized monitors.

Well, the flapping mirror technology (and I used SLRs for 40 years and TLRs before that) was fully developed by back in the 1970s; the EVF is still going through development. That said, when the development costs are fully wrtiten down, the EVF will be cheaper.

Nope -- car windshields and house windows are quite different things and quite different uses. They are direct vision not multiple reflection systems. The problem with SLRs is the multiple reflecting stuff required and getting that first reflecting surface our of the way so you can take a photograph.

The EVF is a solution -- it gives you a view of what the sensor sees directly through the lens.

Cheers, geoff

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