R5 on AirPower 2022

Karl_Guttag wrote:

Zeee wrote:

Karl_Guttag wrote:

Zeee wrote:

I don't think it is possible to have no blackout with a shutter. Think about it, the shutter blocks off the sensor with mirrorless.

I think Sony has a sensor or something like that which bypasses the shutter. I'm not sure but the gang Fred Miranda talked about it. No blackout at all apparently.

That would be expensive and not work well. The whole idea of mirrorless is to not have anything between the back of the lens and the sensor.

I'm assuming this is not E shutter but I could be wrong.

https://petapixel.com/2017/04/20/20fps-no-blackout-looks-like-sony-a9/

You don't hear any shutter in the video, and the A9 is only "blackout-free" when using an electronic shutter.

You are correct. I found it at the Sony site. I was looking at it before the R5 was released so it’s been a while. What the A9 has is no rolling shutter effects due the extra processor on the sensor.
Thanks

Not quite, the A9 still has a small amount of rolling shutter. Sony claims its "20 times faster" (than what, a slow readout sensor? An R5 has significantly less rolling shutter than most Sony and other Canon cameras). The key is the backside illumination and stacked (memory), which lets them read out the sensor faster. For no rolling shutter, they would need a "global electronic shutter" that latches all pixels on the sensor simultaneously.

It was 20 times faster on 2019. I guess the people at Fred Miranda didn’t provide accurate info. The read speed apparently was fast enough to prevent rolling shutter where the R5 fell short. Oh well I went with Canon.

See also reports from users of the A9's rolling shutter: https://www.dpreview.com/forums/thread/4508820

Even with a fast-rolling or even global shutter, they have to deal with non-constant light sources. With flashes, the sensor can be synced with the flash. But some "normal" light sources, most notably many LEDs, flicker and cause banding with a rolling shutter and could be caught "on" or "off" by a global shutter. Cameras are putting sensors on to detect the flickering and try and synchronize the shutter to the light sources (and option on even on cameras like the R5).

The future is going to be backside illuminated (high-end Sony, Nikon, and R3 have already) and eventually global electronic shutter. As these technologies greatly reduce/eliminate rolling shutter combined with flash and illumination synchronization will see mechanical shutters go the way of DLSR flip mirrors (Nikon has already eliminated mechanical shutters on their highest-end models).