Reducing image size

[techlists at phpcoderusa.com]

Thank you to everyone who responded!!


On 2014-09-24 15:03, Stephen Partington wrote:
> I shoot raw and keep them at full resolution and then render out the
> correct size i need. The downside to changing the resolution is that
> you will lose detail and you will never get it back. so the first step
> is to play with the various resolutions and see which ones look best
> to you.
> 
> This is a good discussion on this very concept. I would suggest you
> take a peek at it.
> http://photo.stackexchange.com/questions/30243/what-quality-to-choose-when-converting-to-jpg
> [2]
> 
> On Wed, Sep 24, 2014 at 12:59 PM, Mike Ballon <mike.ballon at gmail.com>
> wrote:
> 
>> You're image size really depends on how much size you want to save I
>> guess, although also if you're willing to have some non-visible
>> pixel lose you could convert them as well. You can start playing
>> around with 2048x1536 or similar just keep in mind your aspect
>> ratio.
>> 
>> Here's the for loop I use for creating thumbnails, use as needed:
>> 
>> for i in `find "$LOCDIR" -iname "*hqw*"`
>> do
>>   echo "$i"
>>   TN=`echo "$i" | sed 's/hqw/tn/'`
>>     echo "creating thumbmail for "$i" ..."
>>     /usr/bin/convert -resize 200x200 "$i" -background none
>> -gravity center "$TN"
>> done
>> 
>> On Wed, Sep 24, 2014 at 1:53 PM, <techlists at phpcoderusa.com> wrote:
>> 
>>> Hi,
>>> 
>>> I have about 9GB of photos.  These images are 2560 X 1920 and
>>> are roughly 2mb each.  I assume I could get away with a much
>>> smaller image.
>>> 
>>> What size should I reduce these to?
>>> 
>>> During my research most suggest using ImageMagick from the
>>> command line.  Is this the best practice?
>>> 
>>> I'm sure I will want to use some type of script since I do not
>>> want to do this one by one.
>>> 
>>> Thanks in advance for your help!!
>>> 
>>> Keith
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> 
> --
> A mouse trap, placed on top of your alarm clock, will prevent you from
> rolling over and going back to sleep after you hit the snooze button.
> 
> Stephen
> 
> 
> 
> Links:
> ------
> [1] http://lists.phxlinux.org/mailman/listinfo/plug-discuss
> [2]
> http://photo.stackexchange.com/questions/30243/what-quality-to-choose-when-converting-to-jpg
> 
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