40D camera file naming - changed ?

[Kevin H]

Hi, I've just downloaded some images from my 40D onto my computer, noticed the default image names seems to have changed, they're now showing as _MG-5701.img, the leading "I" from IMG has beem replaced by a "_", don't remember doing anything that might have caused this to happen, the images are perfectly fine, so I'm not too bothered, more interested.
Anybody any ideas what's going on ?

 

[Lufbrarunner]

Colour space.
The leading I will be missing if you are in RGB, rather than sRGB

 

[Kevin H]

WOW, Thanks, namllihs, that was fast, you're right, thank you, just checked & was set to adobe RGB, reset to sRGB, back to normal file naming.