[Leica] What is Rosetta

[h_arche at yahoo.com (H. Ball Arche)]

We talked about this once, when you were here, and I'm not sure you know why 
I think its important to make that histogram adjustment in the scan.

I actually agree that Photoshop it where it's at for massaging the the 
image, and think that manipulating the scan, with color tweaks, unsharp 
mask, etc. is pointless. Wait until its in PS.

BUT (and I could be totally wrong and deluded) I think its really important 
to get a scan that has the histogram spread end to end, without a long flat 
toe at either end. Or worse, scanning a histogram that has a false spike 
from getting a black from outside of the edge of the image.

The scan is going to give you 256 slices of greyscale, but if 15 slices at 
the black end are empty, and 21 at the highlight end, then instead of 
getting 256 slices of grey you're only getting 220. You're giving up range. 
You want to spread that graph end to end, get your full 256.

For me it's exactly analogous to test stripping a neg in the enlarger: You 
want to know at how many seconds your shadows start to clump, and at how 
many seconds your brightest white starts to take tone. The time in between 
is the range you have to work with, and you can't go over or under.


----- Original Message ----
From: Mark Rabiner <mark at rabinergroup.com>
To: Leica Users Group <lug at leica-users.org>
Sent: Tuesday, July 14, 2009 5:41:53 PM
Subject: Re: [Leica] What is Rosetta

If you scan in raw format the interface of your scanning software becomes
irreverent. All that matters is your compiled knowledge of Photoshop which
you then open the scanned file in with all information and work from from
scratch. It could be a bit off. But always "make rightable" in Photoshop.
With nothing dropped out.
Half the scanning software now a days I may be wrong has a raw option.

Not rare but:

Raw raw raw.


Mark William Rabiner



> From: "H. Ball Arche" <h_arche at yahoo.com>
> Reply-To: Leica Users Group <lug at leica-users.org>
> Date: Tue, 14 Jul 2009 12:09:48 -0700 (PDT)
> To: Leica Users Group <lug at leica-users.org>
> Subject: Re: [Leica] What is Rosetta
> 
> 
> I tried vuescan, and silverfast.
> 
> Hated both of them as being non-intuitive with a steep learning curve. I've
> been using the Minolta software so long, since 2000, that I can get it to 
> do
> pretty much what I want.
> 
> Actually, I don't believe in doing more at the scan step then pulling in to
> touch each end of the histogram, but then again I don't do much color - 
> don't
> mess with ICE, and only rarely go for a de-graining.
> 
> 
> ----- Original Message ----
> From: Steve Unsworth <lug at steveunsworth.co.uk>
> To: Leica Users Group <lug at leica-users.org>; H. Ball Arche <h_arche at 
> yahoo.com>
> Sent: Tuesday, July 14, 2009 1:57:24 PM
> Subject: Re: [Leica] What is Rosetta
> 
> Provided you are happy to scan outside of Photoshop you could use 
> Vuescan...
> 
> www.hamrick.com
> 
> Steve
> 
> 
> On 14/7/09 19:50, "H. Ball Arche" <h_arche at yahoo.com> wrote:
> 
>> The software for the Minolta is outdated; that's a given and it will 
>> never be
>> updated again, so I have to bite that bullet.
> 
> 
> 
> _______________________________________________
> Leica Users Group.
> See http://leica-users.org/mailman/listinfo/lug for more information
> 
> 
> 
>      
> 
> _______________________________________________
> Leica Users Group.
> See http://leica-users.org/mailman/listinfo/lug for more information



_______________________________________________
Leica Users Group.
See http://leica-users.org/mailman/listinfo/lug for more information