Hi Jody, the originals (not resized) resolutions are between 2000x1600 and 8000x1700 (the bigger) at 365.76 pixels/inch.

At 100 pixels/inch the document size is 75.4*14.17 inches.

I think it's a very high resolution. Why do you say it's very low? I'm very interested in comments about resolution. I'm waiting your answer. Thanks for your comment.

PS: Thanks to Emily and dragongirl for their comments too.