Light from the lens is bounced off the mirror and focused on the viewscreen. The display mechanisms are located in the viewfinder housing above the focusing/view screen that is the roof of the mirrorbox. Indicators and f stop number etc indicators are located? Is there an super small screen under the DSLR mirror where auto focus
VIEWFINDER OVERLAY SERIES
The Rebel Txi/xx0D series does appear to now use transmissive LCD technology in the viewfinder. All of the information shown is possible without an LCD overlay. Based on an image I found of the 1500D's viewfinder, it probably has not. It's not clear if that technology has filtered down to the Rebel/xx00D series even today, much less by 2016 when the EOS Rebel T6/1300D was introduced. Most of it now is done using LCD or Electroluminescent displays.Ĭanon started using translucent LCD overlays with the EOS 7D in 2009.įrom the Canon EOS 7D review at The-Digital-Picture Old film cameras actually had mechanical needles in there that displayed metering information. The information on the edges around the image frame can be displayed using a variety of methods. The red dots can be projected onto the apparent location of the focusing screen (a/k/a the view screen) as seen through the viewfinder from beside or above it in the prism housing. Technically, those that do it the way you think you are describing etch them onto the focusing screen, which is located in the roof of the mirror box.īut other cameras now use translucent thin LCD overlays to display information inside the image frame part of the viewfinder.
![viewfinder overlay viewfinder overlay](https://mir-s3-cdn-cf.behance.net/project_modules/1400/61eea284974299.5d6e2141d757e.jpg)
Not really, because I've never seen focus points or anything else (intentionally) painted on a reflex mirror.
![viewfinder overlay viewfinder overlay](https://cdn4.vectorstock.com/i/thumb-large/40/08/camera-focusing-screen-vector-23554008.jpg)
![viewfinder overlay viewfinder overlay](https://i.pinimg.com/originals/09/7e/68/097e68fd5f773cc982399506df5a6a1b.png)
I know how the focus points are painted on the mirror.