Canon PowerShot G6 User Manual page 127

Folder File Capacity
Each folder usually contains up to 100 images.
However, since images shot in Continuous mode or Stitch Assist
mode are always saved into the same folder, a folder may contain
more than 100 images. The number of images may also exceed
100 if a folder contains images copied from a computer or images
shot with other cameras. Please note, however, that the images in
folders containing 2001 or more images cannot be replayed in this
camera.
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