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Electronic shutter: advantages and disadvantages

Started Sep 6, 2015 | Discussions thread
(unknown member) Forum Pro • Posts: 47,805
Re: Auto ISO broken with electronic shutter
1

Henry Richardson wrote:

I discovered today that Auto ISO is broken when using the electronic shutter. I am using A mode.

electronic shutter: @ 150mm - ISO 200, 1/30 f5.6

mechanical shutter: @ 150mm - ISO 2000, 1/250 f5.6

I have been using Auto ISO a lot since I got the E-M5 in 2012. Use it on the E-M5, E-M10, and E-M10II. But, now with the electronic shutter there is a bug.

This is not a bug. What I believe Olympus is trying to avoid is banding in the shot in low light conditions.

With all the 3 cameras using the mechanical shutter, Auto ISO tries to maintain a minimum shutter speed of about 1 / focal length * 2 and will raise the ISO if it has to. With the electronic shutter though it is allowing the shutter speed to go way too slow while keeping the ISO very low. I switched back and forth between the electronic shutter and the mechanical shutter and could see the shutter speed and ISO keep changing every time I switched.

I have really been liking the electronic shutter in the last few days so I am very disappointed to find this big bug in a feature I use a lot.

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Henry Richardson
http://www.bakubo.com

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Raist3d/Ricardo (Photographer, software dev.)- I photograph black cats in coal mines at night...
“The further a society drifts from truth the more it will hate those who speak it.” - George Orwell

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