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Electronic shutter: advantages and disadvantages

Started Sep 6, 2015 | Discussions thread
assaft
assaft Senior Member • Posts: 1,483
Re: Auto ISO broken with electronic shutter

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. 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.

Yes, and it was reported also regarding the E-M5 ii, see here. There's an hypothesis that it makes no difference that the shutter speed is so slow because the slow read out is the limiting factor. Actually I'm not so sure about that, but just to let you know.

 assaft's gear list:assaft's gear list
Olympus PEN E-PL2 Olympus OM-D E-M10 Olympus M.Zuiko Digital ED 9-18mm F4.0-5.6 Panasonic Lumix G 20mm F1.7 ASPH Panasonic Lumix G 14mm F2.5 ASPH +6 more
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