Do backup programs usually compress data being backed up?
And if they do, is that a concern when backing up photos - can the compression degrade IQ?
I'm especially thinking of raw files.
And if they are compressed, there must be a way of uncompressing the data when the backup files are needed.
For example, if I use brand X backup software to back up data to an external HD, then I'd also have to use
brand X software to uncompress the data when retrieved from the HD. Yes or no?