How fast is the Z9 shutter?

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JimKasson
JimKasson Forum Pro • Posts: 38,236
How fast is the Z9 shutter?
31

To measure how fast focal plane shutters are, I use a setup like this:

What do we have here?

  • Z9 on camera stand via a C1 cube
  • Z9 set to 1/2000 second exposure
  • CV 125/2.5 on Z9
  • Analog oscilloscope, sweep speed 0.5 milliseconds per division
  • Function generator set to produce a 100 KHz triangle wave

Here's the picture the camera took:

The bright green traces are the ones to look at. The dimmer green traces are due to phosphor persistence in the scope. The width of the green band is about one division. One division is 500 microseconds. 1/2000 second is 500 microseconds. Earlier time is on the left, and later time is on the right. So the shutter exposes the sensor from the top of the image to the bottom. That's the same as saying the shutter exposes the sensor from the bottom of the sensor to the top.

It takes 7.4 divisions for the start -- and the end -- of the exposure to travel from the top of the image to the bottom. That means it takes 3.7 milliseconds for that to happen. 3.7 milliseconds is 1/270 second.

Pretty fast for a FF electronic shutter.

Questions?

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 JimKasson's gear list:JimKasson's gear list
Leica Q2 Monochrom Nikon Z7 Fujifilm GFX 100 Fujifilm GFX 100S Nikon Z9 +1 more
Nikon Z9
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