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Memory card limitations for Canon PowerShot SD450

I just purchased a 4 GB memory card for my Canon PowerShot SD450. Upon installation, the camera gives an error message that the card is locked, even if the card's switch is not in the locked position. Thinking that the card was defiective, I returned the card to the store to exchange for a new one. I encountered the same problem with the new card. Is there a limit as to the size of the memory card that this camera will accept?

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4 Suggested Answers

  • 3 Answers

SOURCE: memory card error after inserting SDHC card on powershot A620

the a 620 only goes up to 2 gb no higher

Posted on Jan 28, 2009

  • 79 Answers

SOURCE: Memory card error - can't format card

Can you use the card in another device? Can you access the card un a USB card reader? If so, it is possible that the camera cannot handle a card that big. You would need to check the manual to see that it can handle a 4Gb card.

Posted on Apr 26, 2009

  • 68 Answers

SOURCE: Size of flash card allowed

According to the Canon website, your camera is not SDHC compatible, which means that 2 GB is the maximum size.

Posted on May 18, 2009

  • 4738 Answers

SOURCE: Tried to unlock Lexar SD 2GB and Lexar SDHC 4 GB - No luck

First of all, the 4GB card will never be able to work in your camera. Check on its face. It likely says SDHC, and SDHC cards as this format came out after your camera was designed (I know it looks exactly like a normal SD card, but it's not).

Now the 2GB card should work with your camera as it is a standard SD card. Remove the card from your camera. Look on the side of the card for the tiny slide switch, and slide it to the other "unlocked" position. Reinsert it in the camera, and see if that corrects the problem.

Posted on Oct 19, 2009

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Our schools Canon PowerShot SD450 memory card has no images or videos on it but the camera says memory

Make sure that the card is 2GB or smaller, the camera only supports SD not SDHC so it won't recognize a card larger then 2GB. If it's 2GB or smaller format it within the camera and then you should be good to go.

May 10, 2011 | Canon Powershot SD450 / IXUS 55 Digital...

1 Answer

I have Canon SX200 IS camera with 4 GB flash memory,and want 2 upgrate its expendable memory upto maximum limit.The camera will support upto which GB?

In addition to SD, SDHC and MMC memory cards, the PowerShot SX200 IS supports MMCplus and HC MMCplus card formats upto 32mb.
Good Luck

Jan 15, 2011 | Canon PowerShot SX 200 IS Digital Camera

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Purchased new memory card for my canon powershot A520 and I keep getting a "memory card error". I've purchased two different cards and get the same error message. Original card that came with...

From page 145 of the A520 user manual, it appears that the largest SD memory card that this camera is able to use is a 512MB SD memory card. The manual is dated "2004", so this size limitation is not unusual for a camera of this era.
If you've purchased anything larger, there is a good chance that it won't work with this model camera.

Dec 30, 2010 | Canon PowerShot A520 Digital Camera

1 Answer

Cannon Powershot A540 SanDisk SDHC 4 gb I insert the card and receive a memory card error. Can't format


A 4 gb memory card is beyond the capacity of your Cannon A540. It is too large. I would stick with a 1 gb card in that camera.

May 28, 2010 | Canon PowerShot A540 Digital Camera

1 Answer

SX200IS what memory card I shut bay .I hawe SDHC 4 GB , it is okay ?

Hello. The card you have seems to be the right type but i'm not sure if your camera will use a 4 GB card. Put it in the camera, if you get a card error or any other message your size limit is probably smaller .


Jan 13, 2010 | Canon PowerShot SX 200 IS Digital Camera

2 Answers

How do I unlock memory card on my canon powershot sd450?

Remove the SD card from your camera and look at it closely. You'll see a small switch which is used to lock the card to protect your data. You will most likely find that the switch is set to the locked position. If it isn't, slide the switch fully to the locked position and then fully back again before trying the card again in your camera.

If this fix has helped then please return the favour by rating my answer. If you still have a problem then please add a comment and I'll come back with further suggestions.

Oct 08, 2009 | Canon Powershot SD450 / IXUS 55 Digital...

2 Answers

Is there a size limit for the memory card for the SD630. I put a 4 GB one in it, and it say memory card error

This camera only supports up to 2GIG or memory card so that's the reason why the 4 GIG wont work with it....

Jul 31, 2009 | Canon PowerShot SD630 Digital ELPH / IXUS...

1 Answer

My Powershot 450sd camera is not reading 4GB SDHC

SDHC memory cards are relatively new, and are sadly compatible with only the newest model cameras. For your model camera, recommend a maximum 2GB standard SD card. Fortunately, these days a 2GB card is very inexpensive.

Dec 29, 2008 | Canon Powershot SD450 / IXUS 55 Digital...

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