Re: Best RAW photo editing tool?

2014-09-04 Thread Bill Ricker
On Thu, Sep 4, 2014 at 5:22 PM, Joshua Judson Rosen
 wrote:
> Hrm. Is that actually an appropriate use of floats?

I think so. With modern hardware, even efficient time-wise. But chews
up RAM a little faster.

> I imagine
> people working with JPEGs as source material basically can't care
> about whatever precision is being lost; is the lost precision
> `down in the noise' for RAW, too?

yeah, JPEGs are hardly precise or accurate or anything else. One
reason to access the RAW ...

RAWs *are* precise, like a 12, 14, or 16 bit per channel GIF/PNG/TIFF;
the only compression if any is RLE. If i save a RAW out again as
TIFF16, I shouldn't have lost any original bits in the diversion into
Floats with 'merely' 24 bits of fraction, but autoscaling avoids
trouble in exposure compensations etc. (File-on-disk hash difference
should be dominated by metadata changing when re-writing.)

( A little noise down in the noise may actual help avoid Mach banding
during processing, so 'useless' extra precision of 24 bits may
actually be helpful too.)


-- 
Bill Ricker
bill.n1...@gmail.com
https://www.linkedin.com/in/n1vux
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Re: Best RAW photo editing tool?

2014-09-04 Thread Joshua Judson Rosen
Bill Ricker  writes:
>
> Fotoxx, which is my preferred tool for JPEG photo edits, now handles
> RAW file natively, no longer by just shelling out to
> ufraw&dcraw. Caveat, since Mike avoids integer math overflow pixel
> problems by using FLOATs, so don't expect snappy performance on a
> limited machine with large RAWs !

Hrm. Is that actually an appropriate use of floats? I imagine
people working with JPEGs as source material basically can't care
about whatever precision is being lost; is the lost precision
`down in the noise' for RAW, too?

-- 
"'tis an ill wind that blows no minds."
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Re: Best RAW photo editing tool?

2014-09-04 Thread Paul Beaudet
>How do I run that (auto-awesome) on my Linux box?

I talk about google's "awesome" corrections a bit tongue in cheek, most of
them are awful instagramy type effects. There is however an auto-enhance
option(once uploaded from your linux box to google's linux box) that is
subtle enough to be effective without touching a "curves" tool. I think
digikam has a similar tool plus the option to break out the curve if you
want to.

Think my raw processing days are over until we start seeing that on our
phones. Officially gave up on dslrs and won't touch the mirorless stuff
till they have full frames, 4k displays and android/wifi.


On Wed, Sep 3, 2014 at 3:05 PM, Bill Ricker  wrote:

> On Wed, Sep 3, 2014 at 3:02 PM, Ben Scott  wrote:
> >> I have got tired of post-processing because of the time it takes. Sad
> to say
> >> google's "auto-awesome" impresses me in terms of time efficiency.
>
> >   How do I run that on my Linux box?
>
>
> You don't, you just upload direct from Android or from laptop to the
> gCloud and they'll awesome-ize it unless you say three times no i know
> better don't.
>
>
> --
> Bill Ricker
> bill.n1...@gmail.com
> https://www.linkedin.com/in/n1vux
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> gnhlug-discuss mailing list
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