SanDisk is a brand of memory card. The Canon A540 takes a certain type of card, see its instrucvtion book, probably it's a CompactFlash, but it may be a SecureDigital (SD). Take the camera to a pghoto retsailer and get the right card - many cameras are fussy about just which manifestation of card they can accept. SanDisk will almost certainly make a card to suit your camera.
http://www.amazon.com/Canon-PowerShot-Digital-Camera-Optical/dp/B000EMU4HS One is more expensive and claims to be better of course. They are virtually the exact same camera.
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A Canon A540 is a good investment for a photographer if he's a professional looking to make money in a business environment. You can take some great looking shots with it.
The first thing to check is the locking switch on the side of the card, making sure it is in the upward (toward the contacts) unlocked position. If you've already tried this, or if the switch itself has broken off, there are several additional troubleshooting items for the problems of "memory card locked" or "memory card error". Please see the below Related Link "Simple Fix for Memory Card Locked / Error".
Step 1: Select the shooting mode to video. (If U can't do this plz see the Quick/full reference guide.) Step2: Full press the shutter button to start recording step3: Full press the sutter button to stop recording. Regarding how much (time) of video you can record at a one go plz refer to the camera manual. This depends upon your available amount of space. There some restrictions when you shoot in video mode. Plz refer to the guides to understand the restrictions.
Canon Powershot A540 . You can find them for around $125 now * I recommend CANON A720. It is my favorite digital camera with its all options. i recommend canon a560, its price is around 130$ it has 7.1mp, 4x optical zoom, etc.
most cameras of any brand come with a basic lens. other specialty lenses must be bought separately; however most basic lenses are versatile enough to take all types of pictures.
Cosco Chester is some miles from the city centre. You will find it at the end of the M56 on the A5117. You can see it from the motorway but you have to go on to the A540 turning to come back on yourself