Do the pellicle mirror cameras cut out when making a shot?

[Sarcophilus Harrisii]

Pellicle mirrors tend to deteriorate, and that affects the image quality. I handled quite a few Canon Pellix cameras to find one with a decent mirror. "Brown-Out" more than Black-Out when the aperture closes down. I kept an F1.2 lens on mine, but sold the combo off. Was not enough of an advantage over using the F1 or EF.

This would certainly apply to the example belonging to my friend. The mirror fitted to his Pellix has some discolouration. It hasn't stopped him using it yet but may well do if it deteriorates further.

The three examples of the RT I've personally used in the last few months on the other hand haven't been a problem. One of the cameras suffered from the dreaded sticky shutter which afflicts some of the early EOS cameras, but the mirrors in all of them have been perfect. Whether this is because Canon's changes to the design have solved the problems that affect the Pellix models, or the mirrors are just not old enough, yet, is, I suppose, impossible to say (the Pellix has over twenty years head start on the others). The RT/RS mirrors were made of coated Mylar, a type of polyester patented by Dupont, if I'm not mistaken, but I'm not sure about the Pellix mirror construction. Given the typical lifespan of a digital camera, in a modern installation, one might reasonably expect other components to fail before a pellicle has a chance to significantly impact on image quality, yes?
Cheers,
Brett

 

[DougFord]

What about using the pellicle mirror in a camera that uses an active OVF?
Fast accurate PDAF and metering that doesn’t require the shutter to be open to make such measurements, on a small fixed lens mirrorless camera.
Talk about reducing shutter lag. 🙄

 

[Mackinaw]

The RT/RS mirrors were made of coated Mylar, a type of polyester patented by Dupont, if I'm not mistaken, but I'm not sure about the Pellix mirror construction.

Ditto for the Pellix, it too used Mylar.

http://www.canon.com/camera-museum/...65/1965_prx.html?lang=us&categ=srs&page=f&p=2

Jim B.