Canon SD850 IS manual 105, Play Menu,S, Select Menu item and press

Youcaneraseimagesfromamemorycard.

Select			Erase	images	after	selecting them one at a time.
			Erases	images	corresponding			to the selected
Select	by	Date	date.
Select	by	Category	Erases	images	in	the	selected	category.
Select	by	Folder	Erases	images	in	the	selected	folder.
All Images			Erases	a mages		on	a memory	card.

[] (Play) Menu,S.

See Menus and Settings (p. 23).

Select

"U

D"

a menu item and press _.

eProceed to Step 5 if you select [All Images].

105