Meaning: The special moment was kept forever in a picture.
Choice of Words: "Moment" is a brief period of time. "Captured" means to take and keep something. "Forever" means for all time, without end. "Photo" is a picture taken with a camera.
Alternative Expressions
A moment frozen in time.
Meaning: This means that a moment has been saved and will always stay the same, like a photo that captures a moment in time.
Choice of Words:Moment is a short period of time. Frozen means to be stopped or unable to move. Time is the never-ending flow of moments. Putting it all together, "A moment frozen in time" is a poetic way to describe a moment that has been captured and will not change or move on.
A snapshot of a memory.
Meaning: This means that a photo is like a quick picture of a memory that you can look at to remember the moment.
Choice of Words:Snapshot is a quick photograph that captures a moment. Memory is a recollection of an event or experience. "A snapshot of a memory" is a creative way to describe a photo that brings back a memory.
A piece of the past preserved.
Meaning: This means that a photo is like a piece of the past that has been saved and will not change or be forgotten.
Choice of Words:Piece is a part of something larger. Past is the time that has already happened. Preserved means to keep something from changing or decaying. "A piece of the past preserved" is a fancy way to describe a photo that captures a moment from the past and keeps it from being forgotten.