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Firmware Update

Canon to Bring Back Pellicle Mirror in Upcoming DSLRs


Canon latest patent revealed via egami shows a new DSLR camera that uses Canon old Pellicle Mirror technology and Electronic viewfinder.

Take a look at the patent details (translated by egami)

Explanation and self-interpretation of the patent literature

  • Patent Publication No. 2015-97352
    Published 2015.5.21
    Filing date 2013.11.15
  • Canon patents
    Half mirror and the optical path division by
    One of the light beam received by the image pickup device
    The other light flux I receive in AF sensor
    FPS of the AF sensor, faster than the image pickup device
    Pixel area of ​​the AF sensor is larger than the image pickup device
    From the AF sensor and the image sensor to obtain an image to be displayed on the EVF or back display


Pellicle Mirror – Back in 1989 Canon introduced first consumer SLR camera Canon EOS RT with Pellicle Mirror, actually the Pellicle mirrors based camera offers some of the advantages over the traditional SLR / DSLR camera, since When you DSLR (Canon, Nikon, Pentax) mirror flips up when you press the shutter button, it allow the light to pass through it to the sensor / flim of the camera, but the biggest problem of the moving mirror that it creates vibration, produces noise, creates a viewfinder blackout for a fraction of second and also limits the Camera burst speed capability.
A Pellicle mirror is actually a translucent film that will remain in fixed place at middle and always reflects some of the light up to the viewfinder and AF sensor, rest of the reaming light goes to the film / sensor.

Advantage – The Major advantage is the fixed mirror tech the camera will get ultimate burst speed, the other major advantage is that doesn’t blackout the viewfinder while shooting at high speed burst mode, due to fixed mirror tech your camera remains vibration and noise free.


Sony SLT System – On Aug 24, 2010 Sony A33 was announced by Sony based on Pellicle mirror technology of Canon, this time Sony was using transparent films instead of mirrors.

Canon-150D-coming-imgCanon next SLT camera ? I do believe Canon will select its entry level series camera to introduce the new technology, earlier they have introduced the first Hybrid AF sensor in  Canon T5i / Canon 100D,  similarly they will select Canon 150D / SL2 or possibly Canon 800D for the introduction SLT technology (Single-Lens Translucent ) technology and EVF, both the tech will make it more compact and handy.

Stay with us….

5 comments to Canon to Bring Back Pellicle Mirror in Upcoming DSLRs

  • Craig B

    Concerning Pellicle mirrors…Canon used them in the late 1960′ and early 1970′ in their ‘Pellix’ consumer camera. Beautiful camera; I still own one.


  • Bill M

    I used these to shoot film/television production stills because they were so quiet I didn’t need to use a sound blimp. When I heard they were dis-continuing them, I bought 4 and continued to use them until I switched to digital around 2004. Still had them in my closet in 2104 when I donated them to the local university which still taught a photo class using film.

  • admin

    I haven’t added the Pellix into the list due to the production limited production issue, however I will add them the list for sure.

  • Rich Ball

    Call me skeptical – I owned a Pellix. In lower light the images lacked contrast. The pelical mirror was a dust magnet and very easily damaged. I known Sony has used them and they have their fans but no thanks. If you really want to eliminate the mirror black-out make the leap to mirrorless and a global shutter. Canon has more than enough technology hidden away in their engineering department(s) to accomplish this. They are a very conservative, risk-averse, company and seemingly just as secretive as Apple.

  • admin

    Thanks Rich for your add

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