Wow!
Godfrey, that's probably the most technical description that I've
ever seen on this list (or at least outside photography per se, which by
its nature is still less technical).
Thank you, thank you, thank you!
Not only that it helped me discerning between the two different scenarios
of what is (experientially) breaking here, but (and that is probably more
important) it also helped me understanding how a DNG file works.
This understanding will be helpful in other aspects of understanding how
LR and related programs work.
Indeed, what you described coincides with my observations. I guess the
biggest surprise that led to the situation I described was that LR did not
warn that something might not be compatible with ACR v 4.6. (And
subsequently, ACR did not complain that there was something that it didn't
understand in the file.)
I still think this is a wrong behavior on part of Adobe's software that
no warning are issued.
Such a warning is a typical behavior that many programs implement.
(Various MS Office and Windows components do that. I believe even
Photoshop and Acrobat give a compatibility warning when you are saving to
a format where certain components are not preserved, - but maybe I am
mistaken about those two.).
I don't need to do this operation often, and hopefully, I'll be able to
get away from CS3. (Although, I don't like the notion of synching
things to the "Cloud", and that has been a hindering factor as well.
But I admit, it might be my prejudice.) In the mean time, I am going
to use PSD format to avoid incompatibility issues.
Igor
Godfrey DiGiorgi Wed, 17 Dec 2014 23:40:46 -0800 wrote:
The DNG spec presents the basic file structure and mandatory included
bits. That seems to work just fine for you, so there's nothing wrong with
the DNG file fundamentals. In outputting the same file to ACR 4.6 vs ACR
7.1 spec, there are fundamental differences in the DNG (first and foremost
being that ACR 4.6 spec creates DNG 1.1 spec files, ACR 7.1 spec creates
DNG 1.3 spec files).
Edits made with LR are parameters for Camera Raw to apply, and so are
dependent upon the instructions that whatever version of Camera Raw is
reading the file can understand. I don't believe that any version of ACR
compatible with PS CS3 can read mask and brush adjustments; mask and brush
adjustments were new in LR 2. LR2 equates to ACR v5 . PS CS3 equates to
ACR v4 generation.
<...>
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