Dazzle USB 2.0 Card reader->corrupt JPEGs?

[Jim Robertson]

I've just returned from an exciting week watching the Tour de France. I have lots of memories (and some up close pics of Lance himself) on the card in my Canon 10D. I can connect the camera to my TV and see the pictures; I can scroll through the images in the camera itself. I can mount the memory card on my Macintosh computers using Dazzle's USB 2.0 card reader, but when I try to open the files, most of them are corrupted (either bands of incorrect color, or displaced portions of the image, or truncation of the images)!

I've been shooting in "large, high quality" JPEG format. The Mac generates an intact preview image of each photo. I've tried MULTIPLE image-viewing applications on the Mac, and I've tried reading the card in many different Mac computers, with the same result.

The files are all about 2 MB in size, which seems correct from the manual.

Any idea what I can do to find out if the images themselves are no good? Why is it that I can display them on a TV? (does this just show the preview image?)

The obvious test would be to try reading them to a PC or to a printer that supports direct insertion of the card, but I don't have either of those available (the PC I can use only supports USB 1.1).

Any other suggestions?

[Ray Schnoor]

A couple years ago, I tried viewing photos using a friends card reader/computer and they all looked corrupted when viewing them on his screen. When I got home, they all were fine on my computer. Since you don't have another card reader or computer available to use (don't you know anyone else with a computer?), I would try plugging the camera directly into the computer. I imagine that you can do that with the Canon 10D.

[judge9847]

The obvious test would be to try reading them to a PC or to a printer that supports direct insertion of the card, but I don't have either of those available (the PC I can use only supports USB 1.1).

Your USB 1.1 PC should have no trouble dealing with the USB 2.0 device: it will simply treat it as a 1.1 and all that should happen is that you will lose the extra benefits of speed etc.

Give it a try - nothing's lost if you do and likely as not you'll get a win!