How can I access Canon RAW files on an SD card if my Nikon camera won't show them over USB?

Asked 9/14/2015

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A friend shot on a Canon and the card contains Canon RAW files. I have a Nikon D5300 and when I connect the card through the Nikon to my Windows computer, Explorer shows used space but no image files, even with hidden files enabled. Can I access those files without a separate card reader, and where should I look for them?

nikon canon file-transfer memory-cards raw

Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0

Photography Stack Exchange contributor

10y ago

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I'm guessing you are trying to import the Canon raw files through connecting the Nikon camera to your computer? That won't work. You need an SD card reader. (Your laptop/computer should have one?)

Originally by user40274. Source · Licensed CC BY-SA 4.0

user40274

10y ago

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Probably yes, but not through the Nikon’s default USB transfer mode. Your D5300 may be using MTP/PTP, which can make the camera expose only the folders/files it expects from a Nikon, so Canon files may not appear. If your Nikon offers a USB mode like mass storage / MSC, switch to that so the camera behaves like a simple card reader.

Also check the card’s folder structure directly. Canon RAW files are usually in the DCIM folder, often something like DCIM/100CANON. Note that modern Canon RAW files are usually .CR2 rather than .CRW.

If the files still do not appear even in mass storage mode or with a proper card reader, then the card may not actually contain readable image files despite showing used space.

How can I access Canon RAW files on an SD card if my Nikon camera won't show them over USB?

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