<div dir="ltr"><div class="gmail_quote">(Sorry was meant to reply to the list as well)<br><br>Thanks Nadav. I'll try the %90 and %95 option.<br>Trouble is that I need to hand the disk-on-key over to the courier in a couple of hours so might just stick to un-recompressed if it still fits.<br>
<div> </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div><div class="h5"><div class="gmail_quote">
On 20 June 2012 16:37, Nadav Har'El <span dir="ltr"><<a href="mailto:nyh@math.technion.ac.il" target="_blank">nyh@math.technion.ac.il</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
On Wed, Jun 20, 2012, Amos Shapira wrote about "Re: Digikam image re-compression - is it reliable?":<br>
<div>> They are in JPG, not RAW. exif is copied over.<br>
> Minimal compression setting (whatever that means on the camera's user<br>
> interface).<br>
<br>
</div>It is possible that the "minimal compression" option exists not because<br>
it is recommended, but because the marketing people demanded it, and<br>
you're actually supposed to use the better compressed options named<br>
something like "fine" or "normal" or something.<br>
<br>
Just as an example of what you might be wasting, I took a 12 megapixel<br>
(3000x4000) family photo, and saw the following sizes:<br>
<br>
8.9 MB - lossless compression (PNG)<br>
4.2 MB - JPEG at 100% setting<br>
3.5 MB - JPEG at 99% setting<br>
2.4 MB - JPEG at 95% setting<br>
1.8 MB - JPEG at 90% setting<br>
1.4 MB - JPEG at 85% setting<br>
1.1 MB - JPEG at 80% setting<br>
0.8 MB - JPEG at 75% setting<br>
<br>
So as you can see, you can indeed significantly reduce your file size by<br>
not insisting on "minimal compression" (if that means lossless<br>
compression, or JPEG at 100% or 99% setting) you can achieve a much<br>
better compression. I'd go with 95% or even 90% and don't think you'll<br>
ever notice a difference (though I don't presume to be an expert on the<br>
subject). I wouldn't go down to 75% unless you're really short on space-<br>
remember that in 10 years, you'd be laughing at these sizes which you<br>
once thought were large ;-)<br>
<span><font color="#888888"><br>
Nadav.<br>
<br>
--<br>
Nadav Har'El | Wednesday, Jun 20 2012,<br>
<a href="mailto:nyh@math.technion.ac.il" target="_blank">nyh@math.technion.ac.il</a> |-----------------------------------------<br>
Phone <a href="tel:%2B972-523-790466" value="+972523790466" target="_blank">+972-523-790466</a>, ICQ 13349191 |A fine is a tax for doing wrong. A tax is<br>
<a href="http://nadav.harel.org.il" target="_blank">http://nadav.harel.org.il</a> |a fine for doing well.<br>
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