what does eos stand for

[woodenwater]

I have been looking for a camera and/or software that will stich photos horizontally and vertically. I have seen  what is possibly out dated info on Canon eos cameras coming with Photostitch software. is this still true. and what does eos stand for. I am writing a book and cannot proceed without improving my photography. please advise if possible.   Paul

[ebiggs1]

EOS = Electro-Optical System 

My newest camera is a 1D Mk IV and it came with Photostitch.  But it is several years old as  have not got the 1Dx bug.....yet !

I bet you can d/l Photostitch from Canon.  I use Photoshop so I really don't know much about Photostitich.

[ebiggs1]

BTW, Eos  was the goddess of the dawn in mythology.  Some say that is where it came from.  Some people say Eos as a name but others say E-O-S as initals.

[TCampbell]

Yes, PhotoStitch is still included with the cameras.  As I look at th Canon software updates available for my camera (my most recent is the 5D III) I see that they updated PhotoStitch to version 3.2.7 as recently as a month ago (7/30/2014).

You dont' have to use Canon's stitching software... there are other photo editing tools that can do this as well.

As ebiggs points out... it's Electro-Optical System.  

Prior to EOS, Canon 35mm film cameras used a mechanical interface between the camera body and lens to control lens aperture blades and the lenses were not auto-focusing (there were some experimental lenses that did).  EOS added auto-focus sensors to the camera body with an electronic interface to the lens to control the aperture blades as well as auto-focus motors in the lens.  Nearly all EOS lenses are auto-focusing lenses.  There are some specialty lenses which do not support auto-focus such as the tilt-shift lenses (tilt-shift / perspective-control lenses in general (from any manufacturer) to not support auto-focus) and the MP-E (a special "extreme" macro-photo lens.)  To my knowledge, all other EOS lenses provide auto-focus.

The same EOS lenses used in the film cameras also work on Canon EOS digital cameras.