Electronic shutter: advantages and disadvantages

axlotl wrote:

rashid7 wrote:

I've been reading this Aussie guy at "camera ergonomics" for years. He is a big fan of m4/3, with tons of experience with many brands&formats over decades. He is very systematic and also concise in testing all sorts of gear. His most recent posts take a good look at e-shutter in the G7. I highly recommend his prolific blog... going back a few years even (-:

G7 Banding

http://cameraergonomics.blogspot.com.au/2015/09/panasonic-lumix-g7-review-part-4.html

Thanks Rashid, I have been testing this issue with the G7 recently.

The G7 makes 4 bands in 50 hz AC so presumably that indicates a scanning speed of 1/25 second. (4 divided by 50x2)

There are no bands at 1/25 (or slower), 1/50 and 1/100 second.

Banding occurs at the intermediate speeds between 1/25 and 1/100 and everything faster than 1/100 sec.

The G7 DPR review states there is reduced DR and increased dark tone noise at higher ISO settings with E-Shutter.

My tests show this is true but the effect is very small and only visible at the highest ISO settings, 12800 and 15600, so of litttle significance for general photography.

Andrew (The Aussie guy)

Now there are more banding versions. I ran across this when shooting a concert. I had to throw away most of my shots because of this type of banding. So many were far worse than this one. I believe it's when they dim the led lighting this happens. Apart from that led's seem to have zero colour spectrum, like one frequency each.

Kjell