Digital BW, The Print

The ColorVision spectrocolorimeter I am beta testing reads out in LAB 
values.  I would like to utilize this to evaluate the degree of 
blackness of prints.  "L" valueThe scale is 0 to 100, 0 being black, 
and 100 being white.

Can anyone come up with a conversion to the density values I see 
bandied about in this list?

Thanks very much......................... Jack Winberg



[Non-text portions of this message have been removed]

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, Jack Winberg 
<jack.winberg@v...> wrote:
>
> The ColorVision spectrocolorimeter I am beta testing reads out in 
LAB 
> values.  I would like to utilize this to evaluate the degree of 
> blackness of prints.  "L" valueThe scale is 0 to 100, 0 being 
black, 
> and 100 being white.
> 


What model colorimeter is that? If it is a ColorSavvy CM2C device, 
they have software that should read out directly. The software was 
free on their web site.

Jack,

You can use the campanding calculator on Bruce Lindbloom's site.  
http://www.brucelindbloom.com/

If you spectro works with QuickRead, that will read out both in Lab and 
density values.  It used to be a free download at www.icctools.com, but 
the link doesn't seem to be working anymore.  I'm not sure if it is 
still available or not.  

I'm sure there are other utilities that provide both Lab and density 
values, but at least the Companding Calculator will work, even though 
it isn't as convenient as QuickRead.

Lou


--- In DigitalBlackandWhiteThePrint@yahoogroups.com, Jack Winberg 
<jack.winberg@v...> wrote:

>
> The ColorVision spectrocolorimeter I am beta testing reads out in LAB 
> values.  I would like to utilize this to evaluate the degree of 
> blackness of prints.  "L" valueThe scale is 0 to 100, 0 being black, 
> and 100 being white.
> 
> Can anyone come up with a conversion to the density values I see 
> bandied about in this list?
> 
> Thanks very much......................... Jack Winberg
> 
> 
> 
> [Non-text portions of this message have been removed]
>

Greg:

This is a brand new instrument, to be released in January by 
ColorVision as part of their Printfix Pro package, designated model 
1005, made by Datacolor.

Jack

At 12:17 PM 12/29/2005, you wrote:
>Subject: Re: LAB luminance as black evaluator?  Density values?
>
>--- In DigitalBlackandWhiteThePrint@yahoogroups.com, Jack Winberg
><jack.winberg@v...> wrote:
> >
> > The ColorVision spectrocolorimeter I am beta testing reads out in
>LAB
> > values.  I would like to utilize this to evaluate the degree of
> > blackness of prints.  "L" valueThe scale is 0 to 100, 0 being
>black,
> > and 100 being white.
> >
>
>
>What model colorimeter is that? If it is a ColorSavvy CM2C device,
>they have software that should read out directly. The software was
>free on their web site.
>


[Non-text portions of this message have been removed]

Hi Lou:

THANKS for this suggestion, I'll give that a shot, certainly worth a try!

Jack

At 12:17 PM 12/29/2005, you wrote:
>From: "Louis Dina" <lbdina@...>
>Subject: Re: LAB luminance as black evaluator?  Density values?
>
>Jack,
>
>You can use the campanding calculator on Bruce Lindbloom's site.
>http://www.brucelindbloom.com/
>
>If you spectro works with QuickRead, that will read out both in Lab and
>density values.  It used to be a free download at www.icctools.com, but
>the link doesn't seem to be working anymore.  I'm not sure if it is
>still available or not.
>
>I'm sure there are other utilities that provide both Lab and density
>values, but at least the Companding Calculator will work, even though
>it isn't as convenient as QuickRead.
>
>Lou
>
>
>--- In DigitalBlackandWhiteThePrint@yahoogroups.com, Jack Winberg
><jack.winberg@v...> wrote:
> >
> > The ColorVision spectrocolorimeter I am beta testing reads out in LAB
> > values.  I would like to utilize this to evaluate the degree of
> > blackness of prints.  "L" valueThe scale is 0 to 100, 0 being black,
> > and 100 being white.
> >
> > Can anyone come up with a conversion to the density values I see
> > bandied about in this list?
> >
> > Thanks very much......................... Jack Winberg


[Non-text portions of this message have been removed]

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, Jack Winberg 
<jack.winberg@v...> wrote:
>
> Greg:
> 
> This is a brand new instrument, to be released in January by 
> ColorVision as part of their Printfix Pro package, designated model 
> 1005, made by Datacolor.
> 
> Jack


Next time you talk to them, you could mention how they ripped me off 
for about $900 with their last "spectro" package. Support jerked me 
around until the 30 day return had past, and I got to keep the junk! 
And that they could have at least offered to let me have the new 
system to compensate. And yes I do still hold a grudge against them. 
They do have my email listed, and I sent several messages to them 
regarding this. In recent weeks I have received their spam about a 
few products, so I know they still have my email.

By the shape and description, either they bought this colorimeter 
from ColorSavvy, or reverse engineered it from their CM2C. The CM2C 
was the best part of the old system but needed some improvement.

Or a simple spreadsheet to do the calc.  The formula is not difficult.  Let
me know if you need it.

> From: Louis Dina <lbdina@...>
> Reply-To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
> Date: Wed, 28 Dec 2005 19:34:16 -0000
> To: <DigitalBlackandWhiteThePrint@yahoogroups.com>
> Subject: [Digital BW] Re: LAB luminance as black evaluator?  Density values?
> 
> Jack,
> 
> You can use the campanding calculator on Bruce Lindbloom's site.
> http://www.brucelindbloom.com/
> 
> If you spectro works with QuickRead, that will read out both in Lab and
> density values.  It used to be a free download at www.icctools.com, but
> the link doesn't seem to be working anymore.  I'm not sure if it is
> still available or not.
> 
> I'm sure there are other utilities that provide both Lab and density
> values, but at least the Companding Calculator will work, even though
> it isn't as convenient as QuickRead.
> 
> Lou
> 
> 
> --- In DigitalBlackandWhiteThePrint@yahoogroups.com, Jack Winberg
> <jack.winberg@v...> wrote:
>> 
>> The ColorVision spectrocolorimeter I am beta testing reads out in LAB
>> values.  I would like to utilize this to evaluate the degree of
>> blackness of prints.  "L" valueThe scale is 0 to 100, 0 being black,
>> and 100 being white.
>> 
>> Can anyone come up with a conversion to the density values I see
>> bandied about in this list?
>> 
>> Thanks very much......................... Jack Winberg
>> 
>> 
>

Hi Jack.
Check your Yahoo e'mail for a table you can use.

Regards
Duane



--- In DigitalBlackandWhiteThePrint@yahoogroups.com, Jack Winberg
<jack.winberg@v...> wrote:

>
> The ColorVision spectrocolorimeter I am beta testing reads out in LAB 
> values.  I would like to utilize this to evaluate the degree of 
> blackness of prints.  "L" valueThe scale is 0 to 100, 0 being black, 
> and 100 being white.
> 
> Can anyone come up with a conversion to the density values I see 
> bandied about in this list?
> 
> Thanks very much......................... Jack Winberg
> 
> 
> 
> [Non-text portions of this message have been removed]
>

-----Original Message-----

From: dlruckus [mailto:dlruckus@...]
Sent: Friday, December 30, 2005 09:55 AM
To: DigitalBlackandWhiteThePrint@yahoogroups.com
Subject: [Digital BW] Re: LAB luminance as black evaluator?  Density values?

Hi Jack.
Check your Yahoo e'mail for a table you can use.


Duane

If it's not too much trouble I'd also would like a copy or perhaps you could post it to the files section of this list.

Thanks, Walt

Walt I sent a version to your E'mail. It is long and I'm not sure it
went through. Let me know if not and I will send a shorter version I have.

Regards
Duane


--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Walt Mucha"
<wkm@k...> wrote:
>
> 
> -----Original Message-----
> From: dlruckus [mailto:dlruckus@y...]
> Sent: Friday, December 30, 2005 09:55 AM
> To: DigitalBlackandWhiteThePrint@yahoogroups.com
> Subject: [Digital BW] Re: LAB luminance as black evaluator?  Density
values?
> 
> Hi Jack.
> Check your Yahoo e'mail for a table you can use.
> 
> 
> Duane
> 
> If it's not too much trouble I'd also would like a copy or perhaps
you could post it to the files section of this list.

> 
> Thanks, Walt
>

-----Original Message-----

From: dlruckus [mailto:dlruckus@...]
Sent: Saturday, December 31, 2005 06:57 AM
To: DigitalBlackandWhiteThePrint@yahoogroups.com
Subject: [Digital BW] Re: LAB luminance as black evaluator?  Density values?

Walt I sent a version to your E'mail. It is long and I'm not sure it
went through. Let me know if not and I will send a shorter version I have.


Duane

It hasn't showed up yet. I've got 500mb storage so size shouldn't be an issue. Did you send it to wkm@...

Walt

Walt.
I sent a smaller version to you at Yahoo and it seems to have gone
through.
Check for it now.

Regards
Duane


--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Walt Mucha"
<wkm@k...> wrote:
>
> 
> -----Original Message-----
> From: dlruckus [mailto:dlruckus@y...]
> Sent: Saturday, December 31, 2005 06:57 AM
> To: DigitalBlackandWhiteThePrint@yahoogroups.com
> Subject: [Digital BW] Re: LAB luminance as black evaluator?  Density
values?
> 
> Walt I sent a version to your E'mail. It is long and I'm not sure it
> went through. Let me know if not and I will send a shorter version I
have.
> 
> 
> Duane
> 
> It hasn't showed up yet. I've got 500mb storage so size shouldn't be
an issue. Did you send it to wkm@k...

> 
> Walt
>

-----Original Message-----

From: dlruckus [mailto:dlruckus@...]
Sent: Saturday, December 31, 2005 07:53 AM
To: DigitalBlackandWhiteThePrint@yahoogroups.com
Subject: [Digital BW] Re: LAB luminance as black evaluator?  Density values?

Walt.
I sent a smaller version to you at Yahoo and it seems to have gone
through.
Check for it now.

Regards
Duane


Got it. Thanks so much. The table is very similar to results obtained using the companding calculator.

Walt