On Wed, 15 Feb 2017 22:30:46 -0500, Mayayana wrote:

That's an interesting one. IV must be altering
the data storage to do something like turn the
orientation 90 degrees without changing the image
data. But that's a special case. In general, any
JPG save will lose data.

That lossless JPEG orientation is very handy because, as you know, when you
bring over hundreds of photos from your phone, the orientation will be
every which way.

So the first thing I do is run an Irfanview thumbnail batch operation which
losslessly rotates all the hundreds of photos and re-saves the EXIF so that
the orientation tags are corrected.

After I losslessly rotate the hundreds of files, I then batch resize and
add canvas and often I batch rename the files.

Then, in Paint.NET, one by one, I caption and annotate the files.

Then, since they get bigger in that process, I go once more back to
Irfanview to batch save the files.

Then I can email them to my mailing list (which I do every day).