You may use other filters but must be able to correlate to a film density.
This correlation is not linear and will be different for each scanner.
The problem arises from the fact that a densitotemeter reads densities
differently than a scanner. A densitometer captures all light passing
through
Hi Toodd,
Ouch. Sigh. Dynamic range:
1. The difference, in decibels, between the overload level and
the minimum
acceptable signal level in a system or transducer.
snip
5. The difference between the maximum acceptable signal level and the
minimum acceptable signal level.
Sharpening will not recover lost detail. It only creates an illusion of
sharpness, and it is very easy to overdo, so beware.
- Original Message -
From: Alex Zabrovsky [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Sent: Thursday, August 08, 2002 23:53
Subject: [filmscanners] RE: PS sharpening
Peter,
Some time ago you promised us a paper setting out your definition,
derivations and sources.
I HAVE provided definitions, clear, concise definitions. I have also
clearly provided my assertions etc. I said I would write-up something, I
never made any PROMISE to do so, nor stated any
As far as I remember, theoretical dynamic range's
maximum is 4.0 which is ideal ...
There is no theoretical limit to dynamic range. It's like a Richter or
decibel scale, open-ended in one direction.
There IS a theoretical limit to DENSITY range, which is what you mean when
talking about
I would agree with your comments IF:
1) indeed the competitors spec usage could be PROVEN to be in opposition
to either standard practice or was indeed a misuse of terms.
Based upon the discussion which occurred here recently regarding the
use of density range, dynamic range, etc., it seems
Hi Arthur,
Based upon the discussion which occurred here recently regarding the
use of density range, dynamic range, etc., it seems fairly hopeless.
Partially speaking, this is because there have not been agreed upon
definitions or standards within the industry.
Actually, that's not true.
Thanks for this site Erik. I'm not sure what to make of these no-name
reviews. Can you tell us who's behind the site and where they're
coming from?
It's less important, but I was disappointed in the Polaroid review
because it's now so dated. Maybe they all are.
Sam
Hi!
This site has a lot of
Yes it will be downsampled.
To downsample by 2, one method would be to change the dimensions of the
image to what you want, but UNCHECK Resample Image Click OK. This will
change the resolution but will not be downsampled yet.
Then Image - Image Size - change the resolution to 1/2 of the
Austin,
I really don't want to dance, so I am not going to get into the he said,
she said thing
I am going to stick by my interpretation of what was said and how each of
you has interpreted it. For now, I am not concerned with the maximum
acceptable signal, given that I understand everyone's
Arthur Entlich wrote:
Partially speaking, this is because there have not been agreed upon
^^
definitions or standards within the industry.
That was supposed to read Practically speaking...
Art
I am only posting two replies to what has been posted during my
overnight. This one is a short response to the nitty gritty of Austin's
argument. The other includes replies in a single post to other points by
everybody.
There are two points I am addressing in this post:
1. Dynamic range is
Julian Robinson [EMAIL PROTECTED] wrote:
1. Dynamic range is a range, not a resolution
No, it's a ratio; a value measured in dB. As such, it implies a resolution,
namely the number of divisions it makes sense to divide (quantize) the range
into.
2. Dynamic range is the range that the
What is firmware?
TH
-=-=-=-=-=-==-=-=-=-
Date: Thu, 08 Aug 2002 01:44:55 -0700
From: Arthur Entlich [EMAIL PROTECTED]
Hi Michael,
Welcome to the list.
I can give you some views in regard to your purchase. I use both a
Polaroid S4000+, which is the
TH,
Firmware is the software that is running inside the scanner to make the
scanner run. It controls all the internal stuff like steper motor, light
source, etc. From a user's point of view the firmware is usually not
important unless you need some bug fixes.
Rob
-Original Message-
This is composed into a single post because I know that this topic is
overexposed and frustrates many people. It frustrates me too, but it would
be wrong not to try to correct misinformation which is propagated with such
authority that it has succeeded in hijacking the moral and technical high
-Original Message-
From: [EMAIL PROTECTED]
Then Image - Image Size - change the resolution to 1/2 of the Resolution
shown, readjust the Document Size to what you want, click OK. It will be
downsampled by 1/2.
Continue doing this until the Resolution is what you desire.
Excuse
17 matches
Mail list logo
