this may sound as a very stupid question so please don't laugh at me. My old digital camera (Nikon Coolpix s6) was recording the EXIF orientation tag in the JPEG file, so my picture viewer software was displaying all pictures properly rotated without any "manual" rotation.
My new camera (Olympus) is not doing this job with the orientation tag and if I want to see my picture on the computer I have to manually rotate them (I'm using a lossless software for doing this).
But now comes my question. If I want to lab-print my pictures should I send out the original ones or also the rotated ones are good? In other word, will the software/hardware of the lab guess that the picture is not 4:3 but 3:4 and automatically rotate it back or not?
I didn't have this problem before because with the Nikon the display rotation was actually only virtual because the real file was not touched at all and was only a matter of displaying.
Thanks a lot for your answer,