I think you have that backwards. With an electronic shutter, the image is taken at electronic speeds; the entire sensor is cleared, then the image is captured. There's no reason for the electronics to expose different pixels at different times. While there will certainly be some delay across the sensor, I would expect all the pixel exposures to be synchronized to within a nanosecond, which is effectively simultaneous as far as any mechanical system is concerned.
With a mechanical shutter, however, you're not going to get that. There will be a difference in time between the top and bottom of an exposure frame, because the opening and closing of the shutter is controlled by the movement of the shutter blind across the sensor. To a first approximation the difference in time is the maximum flash synchronisation exposure speed (not using high-speed flash, of course). Even if you have a camera capable of flash synchronisation at 1/1000 of a second, thats still six orders of magnitude more temporal distortion artifacts than from an electronic shutter. while electronic shutters can expose all the pixels simultaneously, they only read out the pixels sequentially. But that's because of bandwidth limitations (both within the sensor chip and in the interface to the camera), not because the pixels are being exposed at different times. On Wed, Dec 28, 2016 at 12:51:28AM -0800, Larry Colen wrote: > I was playing with some night landscape work tonight, using live view, and > when I took a photo, I didn't hear the shutter. I realized that was because > I had set my camera to use electronic shutter in live view because that > means it doesn't need to go flop flop with the shutter and you don't get all > of the shutter lag. > > I realize that with objects in motion, using an electronic, or rolling, > shutter, you can get some interesting bits of distortion. However, it seems > to me that on very long exposures, that effect is minimized, and you are > saved a whole bunch of mirror bounce. > > Are there any major disadvantages of using live view/electronic shutter, on > tripod mounted long exposures that I'm missing? > > -- > Larry Colen l...@red4est.com (postbox on min4est) http://red4est.com/lrc > > > -- > PDML Pentax-Discuss Mail List > PDML@pdml.net > http://pdml.net/mailman/listinfo/pdml_pdml.net > to UNSUBSCRIBE from the PDML, please visit the link directly above and follow > the directions. -- PDML Pentax-Discuss Mail List PDML@pdml.net http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
