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Rolling shutter

What is rolling shutter and how to compute it?

SteadXP Calibration allows SteadXP users to create their own camera profiles. During the calibration, a rolling shutter value must be specified for CMOS sensor based cameras. Rolling shutter consists in capturing rows of a picture one after another, therefore not all parts of the image are recorded at exactly the same instant.

What Is Rolling Shutter And Why It Is Cool
Here is a more detailed article from DIY Photography explaining what rolling shutter is and why it is important.

 

Where to find this value?

The software will automatically fill the values when available. Thanks to SteadXP community, we were able to provide rolling shutter values for the software database. Yet, not every value has been validated by our team. Feel free to contact us if you experience issues with a wrong rolling shutter value suggested by the software.

You can find most common camera rolling shutter values online:

 

How to use it?

Let’s say I want to calibrate my Canon 5D Mk2 in Full HD (1920 x 1080). The first link (dpreview.com) indicates a rolling shutter of 25,9ms. So the rolling shutter I must enter in SteadXP Calibration is:

25,9/1080 = 0,02398 milliseconds (ms)
 

If I want to calibrate my Panasonic GH4 in UHD (3840 x 2160), the rolling shutter I must enter in SteadXP Calibration is:

22,5/2160 = 0,01042 milliseconds (ms)

Enter this value
when filling the form in SteadXP Calibration and then continue with the calibration process.

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For CCD and global shutter cameras:
Using SteadXP+ with all CCD and Global shutter cameras, the rolling shutter value must be set to 0.000001.

For GoPro cameras:
Using SteadXP@, the software will automatically compute the rolling shutter value (you can leave it to 0 when creating a profile).