Am 08.12.2009 um 17:26 schrieb Phil Hystad:
This question is not specifically about Cocoa programming but I hope
that some Mac OS X experts out there can give me an answer.
I sent an attached photo to my daughter so that she could print it
out using Costco print services. I sent it at high resolution, the
photo image was 1.6 MB. It seems that Mac mail changed the
resolution to a more web friendly size of about 64 K with much
reduced resolution. So, I thought that a way to get around this was
to change the file type (extension) of the image file to something
other then .jpg such as .dat (and, I tried .zz, .q, and null).
However, the file was still recognized and interpreted as a jpeg
file and treated in the same manner by mail (and, also by the finder
that displayed the image).
So, it looks like Mac OS X is interpreting the file based on
contents and not based on file extension. This seems to be a very
wrong thing to do in my opinion.
Why exactly does this seem very wrong? After all, it's the content
that matters, not the file name or extension... A picture is a picture
and won't become a text document or a sound just because you change
the extension!
Does anyone know of a way to turn this off or is this considered a
"feature" for some ease-of-use aspect of OS X?
When you add pictures to a mail message in Apple Mail, there's a
little popup menu in the lower right corner of the mail message window
that allows you to pick the image size. IIRC, one entry is "Original
size"...
</jum>
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