shutter-shudder 

An involuntary muscle-twitching dat a camera-shy person feels from either having to press da release-button to take a photo, or when he hears da click of da camera when a picture is being taken of him.

One simple way to mostly eliminate image-blurring from fairly-minor shutter-shudder is to use a fast exposure-speed (and a flashbulb, too, if it's fairly low-light conditions); you may need to use a suitably large lens and wide aperture-setting to accommodate said swift-click camera-snap.

shutter-shudder by QuacksO January 8, 2020

The Cold Shudter 

Text message version of giving someone the cold shoulder:

When someone ignores a text message (or group of text messages) by quickly swiping the message away, and off the smartphone screen causing a "shutter effect" that you see used with pictures and videos.

Boy "She is definitely giving me the cold shudter, I bet she hasn't even read any of my messages!"

Girl "Omg, look how annoying he is with all these text messages. Delete, delete, delete" As she swipes away and deletes all of the messages without acknowledging them.

The Cold Shudter by Disqualifier May 3, 2014