Can I use an SD card in a CF slot?

Although the cards are similar in size, they are not at all interchangeable. CompactFlash has hit the speed barrier and the latest generation of UHS-II SD cards are more than twice as fast.

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Are CF and SD cards the same?

CF card is not the same as SD card, although both of them are used in cameras and other digital devices. They have different dimension and speeds. You should choose between them according to your needs.

Do CF card adapters work?

The biggest issue with using an SD to CF card adapter is that most of them aren’t that reliable. So even if you have a fairly high quality SD card in it, if the adapter causes issues while you are in the field shooting you will have no way to get your images recorded to the SD card.

How do CF cards work?

Practically, CF cards work via 50 pin holes that connect inside a camera or CF card reader. These pins are definitely the biggest downside to using CF cards over portable storage cards. Because all 50 pins must line up perfectly they can sometimes bend, requiring maintenance to your camera or card reader.

Should I use an SD card to CF card adapter?

Can I use a CF card with a 12 year old camera?

In the end, the reality is with a 12 year old camera using any modern high speed card, be it CF or SD via CF adapter-you will probably get results that are perfectly acceptable for most conditions. I just don’t know that I’d deal with the hassle of an off brand adapter that could break, cause issues, or slow me down.

Do you use a USB card reader with your CF cards?

Unlike other answers (including ones I’ve upvoted) I always use a USB card reader with my CF cards, and have only had one failure from 3 cheap readers (plus a couple of more expensive ones and printers, hard drives with built in readers).

Is an SD card adapter worth it for a 40D?

If this is your main reason then it is not worth it. I have a 40D, and bought an adaptor and a 16GB SD card. So far it all works fine, however removing the SD card from the adaptor is difficult.