Chris T wrote:
... FYI - I reduced a 24MP (12.9MB) file earlier, to min. HD - turned out to be 1.5MB. I, then - could NOT send it via e-mail, after two hours of trying. I reduced it further to 640 (a 450kb file) and it went thru, without a hitch. So, your hypothesis - doesn't mean SQUAT - to me. Now, leave off - willya?
You actually proved that my advice works.
You managed to find your threshold near 450kb. You are almost there.
Now take that 24 MP file and resize it to 6 MP (3000x2000) before you compress it. The only thing left is to find out how much compression you need. I will spoon-feed it to you.