On 2/21/2011 12:59 PM, usher99@xxxxxxx wrote:
> "That was too much work--need to remember to shoot some reference with that
> lens." He just hasn't, remembered, or found
> the time to make the profile, yet. :-)
>
> Moose
>
> Oh, I just got put off by the multiple steps and complications.
I just don't think it has to be that complicated. Maybe, but only maybe, if you
were shooting products of catalogs, such
dogged pursuit of theoretical perfection might be justified.
> Had a few e-mail exchanges with a guy who did the profiles for DXO--he said
> it took him 150 shots to get 3 usable ones. He suggested a preset in the HSL
> tabs by shooting a white paper with a "neutral lens" and the culpritmacro
> lens---doesn't seem to always do the job.
That man is an incompetent fool. You just want to correct for variation from
normal daylight. Shooting a color target in
the sun is really simple. You just want to shoot straight on, to avoid
distortion, avoid reflections and keep your
shadow off it. Now that I think of it, my new tripod will make the second two
that much easier.
Shoot one with the Viv macro and one with neutral color and about the same
focal length (Only so you don't have to waste
time changing the setup.)
> One of the calibration programs Wolf Faust likes is LoCA (that one is free)
> and better than the simple matrix correction of vuescan. It does not seem to
> create profiles that can be used by DXO. ugh. I has since again paid my Adobe
> dues (educational discount at least :-)) and seem to like to use ACR anyway
> for non-supported lenses.
I know the search for perfection is what makes you so good at your day job, but
just try the Vuescan method, and see if
it doesn't do what you need. I briefly tried another profile maker, LoCA, if I
recall correctly, and I just couldn't see
any difference.
So use DXO for conversion, if you want. It doesn't matter. Just open the
converted file in PS and do the color space
conversion. Make an Action to do it, and it will just take moments. After all,
how many images will you be doing this too?
> I still don't like the autocrop after lens corrections in DXO and have
> trouble having it leave shadows alone, if I want that.
I just have to say it. I just don't think DXO is so great. I know there are
pros and 'experts' who really like it, but I
don't see anything like capabilities worth the price, especially of the version
needed to get one lens profile for my
"professional" camera.
I get their e-newsletter, and they are regularly touting new features that
other tools already have. In my test, their
de-blur was second rate. They talk big, and very high concept, high tech, but I
don't see it in the results. The latest?
"Capture One Pro 6.1 now includes contrast adjustments in local adjustments
layers." Wow! Big news! Except PS has had
that for many years, at least since at least ver. 5, when I stepped in.
As to eliminating black in the borders of lens distortion corrected images, do
they auto crop or auto expand? ACR auto
expands to the original dimensions and I seem to recall DXO does that too? Auto
crop would be fine with me, but I see no
reason at all to do a second operation on all those pixels, thus increasing the
possibility of artifacts.
> Anyway I think this French firm offers targets and software that works with
> PS and DXO but is about 4 times the price. It appears they had something to
> do with DXO's development.
I'd fully try the simple, cheap solution before shelling out more kale.
> Anyway I was taken aback by the ACR color rendition that was waay worse than
> the in camera Jpeg for that shot.
I can't speak to that, I have neither a 5DII nor that subject. :-)
> The lens color cast is only a problem with warmer subjects---a deep yellow
> daylily was rendered almost grungy.
You may be surprised at the change in other subjects, once you get the profiles
and workflow straightened out.
> I think I am inclined to use the Wolf Faust target and use ACR
There you go!
Well, I've not done it in ACR, but I suppose it would work the same as when I
do it in PS. In any case, try backing down
to simplicity and see if it doesn't do what you need.
Color Balanced Moose
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