Time passes by

by clabacchio

submit your photo


Hall of Fame
View past winners from this year

Please participate in Meta
and help us grow.

Take the 2-minute tour ×
Photography Stack Exchange is a question and answer site for professional, enthusiast and amateur photographers. It's 100% free, no registration required.

I have a Canon 550D and I have a THM for each picture that I have taken in my SD Card.

What is a THM file and what is it used for?

share|improve this question

2 Answers 2

up vote 6 down vote accepted

It's a thumbnail file. Usually it's generated when you take a video, to give you a preview image on the LCD and to store the EXIF information for exposure, focal length, etc.

You can rename it to .jpg if you want to view it on your computer.

share|improve this answer

Just based on the "THM", I'd guess it's a thumbnail of the picture. I haven't looked specifically at the 550D, but in the cameras I have looked at, it was really just a small JPEG with a somewhat unusual name.

As far as what it's used for, the camera loads it when you're viewing pictures on camera. Only when/if you zoom in does it load the full-resolution version.

share|improve this answer

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.