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What types of CF Cards are supported by the Canon EOS Rebel XTI


I have a Canon EOS Rebel XTI, recently bought a  Lexar Profesiional 128GB 160MB/s  1066x CF Card, went to use it and Camera diplayed: THERE IS SOMETHING WRONG WITH THE CF CARD  REPLACE THE CF CARD.  I was assured by the salesperson the card would work with my Rebel XTI. Can someone please explain  if the card will work or did I buy the wrong type card? Thanks any help is appreciated


@Stephen wrote:

Hi guys!


The XTi was released in 2006. That's right at the cusp of "big" CF cards, which means it *should* be able to handle just about any card you toss into it, up to 512GB, however the card has to be formatted as FAT32, so you might need to do that in a computer before using it in the camera.


Bear in mind, this is an older model, and in technical support, we honestly haven't tried to use a giant card in an XTi, because it hasn't come up. If you have a mind to do so, you could call in on Monday when there are people in the office and see if someone has a huge card and can try it in the XTi we have - it won't hurt anything to try! Our team is in the office from 8am to Midnight (Eastern) during the week and on Saturday from 10am to 8pm at 1-800-OK-CANON (800-652-2666), they're right here in the USA, and are 100% free! 

I just pulled the 32GB San Disk Extreme PRO (UDMA 7) card out of my EOS 7D Mk II and popped it in my EOS Rebel XT and took a picture. It worked fine with no issues. A UDMA 7 card is way over kill for the XTi. A 32GB Sandisk Ultra CF card would be fast enough and still offer a massive amount of storage for the XTi. The card I normally used in the XTi was a 4GB Sandisk Ultra. 

@TTMartin wrote:

 A 32GB Sandisk Ultra CF card would be fast enough and still offer a massive amount of storage for the XTi. The card I normally used in the XTi was a 4GB Sandisk Ultra. 

The 4GB card in the XTi has a capacity of about 201 XTi RAW+JPG photos. So a 32GB card should hold over 1600 XTi RAW+JPG photos.


Firmware will only support 32 MB CFD card and below (8 & 16 mb card)   Like you found out the hard way,  If you a computer or printer with card slots you may be able to formatthe card like I did so you can transfer pics from your computer to the card and use the card as a secondary storage device. 

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