Inter-Instrument agreement cont.
Inter-Instrument agreement cont.
- Subject: Inter-Instrument agreement cont.
- From: Mike Stewart <email@hidden>
- Date: Tue, 25 Feb 2014 15:28:01 -0600
Thanks to Andrew and Steve for quick and informative replies. One
question remains. The "stats" from xRite are based on the i1Pro2 and
I'm talking about the i1Pro. Would the inter-instrument agreement
specs. be the same (or close) for both instruments?
Mike Stewart
On 2/25/14, email@hidden
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> Today's Topics:
>
> 1. Dtp70 (Graphex)
> 2. Inter-Instrument agreement (Mike Stewart)
> 3. Re: Inter-Instrument agreement (Andrew Rodney)
> 4. Re: Inter-Instrument agreement (Steve Upton)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Mon, 24 Feb 2014 16:30:31 -0500
> From: Graphex <email@hidden>
> To: "email@hidden"
> <email@hidden>
> Subject: Dtp70
> Message-ID:
> <email@hidden>
> Content-Type: text/plain; charset=us-ascii
>
> Hi all,
>
> "Does anyone have a DTP70 they want to sell?" asks the frugal one.
>
> Roger
>
>
> ------------------------------
>
> Message: 2
> Date: Tue, 25 Feb 2014 12:38:52 -0600
> From: Mike Stewart <email@hidden>
> To: email@hidden
> Subject: Inter-Instrument agreement
> Message-ID:
> <CAFB95ovoo2+=email@hidden>
> Content-Type: text/plain; charset=ISO-8859-1
>
> Hello All: Is there some "rule of thumb" regarding spectrophotometers
> and inter-instrument agreement? A situation can and has appeared where
> we are using an I1Pro measuring the IdeAlliance colour bar. When we
> read the chart/bar and have the printer read the very same chart using
> the same brand of spectrophotometer, same Rev., same settings, same
> backing, etc. we get different readings. Readings where our proof may
> "Pass" and their measurements will generate a "fail". Obviously this
> is an issue. What can be done about it?
>
> Thanks
> Mike Stewart
>
>
> ------------------------------
>
> Message: 3
> Date: Tue, 25 Feb 2014 12:21:41 -0700
> From: Andrew Rodney <email@hidden>
> To: ColorSync List <email@hidden>
> Subject: Re: Inter-Instrument agreement
> Message-ID: <email@hidden>
> Content-Type: text/plain; charset=utf-8
>
> http://www.xrite.com/product_overview.aspx?ID=1912&Action=support&SupportID=5586
>
> Inter-instrument agreement: 0.4 ∆E94* average, 1.0 ∆E94* max. (deviation
> from X-Rite manufacturing standard at a temperature of 23ºC (73.4ºF) on 12
> BCRA tiles (D50, 2º))
> Short-term repeatability: 0.1 ∆E94* on white (D50,2°, mean of 10
> measurements every 3 seconds on white)
>
> Might be time for both sites to run the free i1Pro diagnostics.
>
> Andrew Rodney
> http://www.digitaldog.net/
>
> On Feb 25, 2014, at 11:38 AM, Mike Stewart <email@hidden>
> wrote:
>
>> Hello All: Is there some "rule of thumb" regarding spectrophotometers
>> and inter-instrument agreement? A situation can and has appeared where
>> we are using an I1Pro measuring the IdeAlliance colour bar. When we
>> read the chart/bar and have the printer read the very same chart using
>> the same brand of spectrophotometer, same Rev., same settings, same
>> backing, etc. we get different readings. Readings where our proof may
>> "Pass" and their measurements will generate a "fail". Obviously this
>> is an issue. What can be done about it?
>>
>> Thanks
>> Mike Stewart
>
>
>
>
> ------------------------------
>
> Message: 4
> Date: Tue, 25 Feb 2014 11:57:19 -0800
> From: Steve Upton <email@hidden>
> To: ColorSync List <email@hidden>
> Subject: Re: Inter-Instrument agreement
> Message-ID: <email@hidden>
> Content-Type: text/plain; charset=utf-8
>
>
> On Feb 25, 2014, at 11:21 AM, Andrew Rodney <email@hidden> wrote:
>
>> http://www.xrite.com/product_overview.aspx?ID=1912&Action=support&SupportID=5586
>>
>> Inter-instrument agreement: 0.4 ∆E94* average, 1.0 ∆E94* max. (deviation
>> from X-Rite manufacturing standard at a temperature of 23ºC (73.4ºF) on 12
>> BCRA tiles (D50, 2º))
>> Short-term repeatability: 0.1 ∆E94* on white (D50,2°, mean of 10
>> measurements every 3 seconds on white)
>>
>> Might be time for both sites to run the free i1Pro diagnostics.
>
> Indeed, also remove the filter attachment and clean it out. I've seen them
> fogged white with paper dust.
>
> X-Rite's (likely correct) response will be to ask when each of the
> instruments was last re-certified and recommend that they be sent back once
> a year….
>
> regards,
>
> Steve
>
>
>
>
>
> ------------------------------
>
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> End of Colorsync-users Digest, Vol 11, Issue 22
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