[Author Prev][Author Next][Thread Prev][Thread Next][Author Index][Thread Index]

Re: [APML] another Histograms

To: astro-photo@seds.org
Subject: Re: [APML] another Histograms
From: Matt BenDaniel <matt@starmatt.com>
Date: Tue, 30 Apr 2002 08:23:02 -0400
In-Reply-To: <013701c1efff$31f19760$820c963f@rayrochelle>
Reply-To: astro-photo@seds.org
Sender: owner-astro-photo@seds.org

At 09:26 PM 4/29/2002 -0700, cherrio wrote:
>...
>ability to adjust the different functions and see the histogram change and
>observe the picture I am working on. I have to admit I didn't know how
>important it is to do these things when you scan as opposed to after you
>scan.

With any reasonable scanner, if you get full-depth unclipped data out of it, with the histogram using up most of its space, you will preserve all of the content. The rest of the manipulation can be done in PS or whatever tool you use.

* 8-bit per channel data is not enough depth.
* Use gamma setting to get the histogram to stretch from near-left side to near-right side.
--
Matt BenDaniel
matt@starmatt.com
http://starmatt.com


--  APML Archives at <http://astro.umsystem.edu/apml/>  ---
             Unsubscribe at <majordomo@seds.org>

References:
- [APML] another Histograms
  - From: "cherrio" <cherrio@shocking.com>

Prev by Author: [APML] Crux and the Coal Sack
Next by Author: Re: [APML] Crux and the Coal Sack
Prev by thread: [APML] another Histograms
Next by thread: [APML] Anyone here use IRAF?
Index(es):
- Author
- Thread