Re: Image Resolution
Re: Image Resolution
- Subject: Re: Image Resolution
- From: Leonide Principe <email@hidden>
- Date: Tue, 5 May 2009 18:56:34 -0400
On May 5, 2009, at 11:36 AM, Roger Howard wrote:
I see - so you're actually creating the four versions in Lightroom?
Do you
set the color space for each version in Lightroom? I'm confused
though - if
you're doing this all in Lightroom, why not set the DPI in Lightroom
during
export too?
No, in Lightroom I just processe Raw files, I select better images and
export them as first Master file that will be imported from FileMaker.
It can be a TIFF or a PSD or even JPEG.
Then, from FileMaker, the AppleScript do the operation that generate
four images from this file: it creates a date-based directory where
will be stored:
1) the Hires image, the second Master file, jpeg, high level
compression, AdobeRGB (it will be used to generate new customized
Versions directly from FileMaker depending on Client Request);
2) the Display Image, jpeg, sRGB, used internally from FileMaker to
avaliate the image on a window sized view;
3) the Web image (500px wider side, sRGB, used from FileMaker to
Upload to Website in the next PHP development;
4) a lightweight Thumbnail for internal FileMaker browsing purpose;
Why a first and second Master file? Simply because the first Master
file is too weigh (tiff, psd) to stay in my Main HD. One day I will be
compelled to move it on an external HD, but my second Master file can
live permanently on the little space that it occupy (3-5 Mb), allowing
me an indispensable portability of my archive out of my office.
The FileMaker database manage my Archive (14,000 images) and I have
always a Master file ready to generate Versions on-demand everywhere.
To stay on topic, the center of my workflow is the FileMaker database,
and around it I am building all I need to do my job (ExifTool,
ImageMagick, GraphicConverter, and next step, Image Core, Cocoa,
Quartz... ). All those technologies are connected by AppleScript, like
an office-boy that go from one application to another.
They are System built-in technologies, and most part of third software
are community-based programs. The solution is very cheap, sharpening a
strong continuous apprenticeship and expanding community-based behavior.
It is hard to stay on topic.
I understand - I'm not telling you not to use "sRGB", I'm telling
you that
the script you posted is not creating sRGB images properly - instead
of
converting ("matching") the color from the documents current profile
to
sRGB (which is the proper way, similar to "Convert to Profile" in
Photoshop) your script was simply assigning ("embedding") the "sRGB"
profile without actually converting the color values... this will
actually
create a color shift, which can be avoided by using "match" instead.
Very clear now!
Then I just change the word "embed" to "match"... it is simple like
this?
Can be a momentary secure solution?
On other side I am evaluating ImageMagick and GraphicConverter.
This last one disappoint me because it don't include Color Profile
commands in AppleScript Dictionary.
Another problem that I face is a basic sharpening need on the three
last versions. The only solution that I have until now is
GraphicConverter or ImageMagick.
Well, then you might consider doing it all with ImageMagick - it's
fast,
and very powerful, you can do the resizing, color space conversion,
sharpening, and other steps all at once... and even though you're
doing
this all on Mac OSX, if you ever needed to you could run just the
ImageMagick part on a cheap, powerful Windows/Linux/BSD machine... I
did
this at my last job - we ran our production all on Mac OSX, but I had
render nodes processing images on Linux (controlled from OSX).
Very interesting! Even being a minimalist (just my laptop, a few
portable HD's and a dominant photographic gear, office is just for
backups), I will store the tip in my memory...
Thanks Roger
Leonide Principe
Amazon Stock Photography
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