I am printing some old Canon EOS 10D images, approx. 2,700 x 2,000 pixels, and some newer Canon EOS 7D images, approx. 4,300 x 3,000 pixels.
Persio,
Some of the earlier Canon cameras, (I have one, a D 60) made thumbnails in the camera and were uploaded from the card to computer.
It has been a while, but I think they carried a .THM suffix.
These were very low resolution, almost unusable.
I am getting a sense that *this* may be the problem with the thumbs on screen.
Anyone out there with a 10D??
Fred