I had a cable release on my old Canon AE-1 SLR film camera.
(Simple, inexpensive and functional)

But I have not seen any digital camera that can accommodate a cable release.

At one time, a few digital camera came with a remote control.
And a few have one available as an option.

But the camera price was/is over $300.

If you plan to use a digital camera on a tripod and want to make sure that you don't jostle the camera while pressing the shutter button, you can use the 3 second delay feature.

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