Originally Posted by The Coolest
I'm considering purchasing a spectro, and it seems that the i1 Pro has a very good price/performance ratio.
I'm trying to decide whether I should save up and buy a new i1 Pro2 kit, which seems to be around $1k or go with a 2nd hand unit which I can afford right now.
From what I gather as long as these spectros are taken good care of, they retain their accuracy for long periods of time.
So my question is are there any benefits to purchasing a new unit vs getting a great condition 2nd hand one besides the 'new electronics smell' factor?
Can anyone please clarify or point me to somewhere with information on what the differences are between all of the i1 Pro's revisions? From reading forums and some articles, it seems that I really should be aiming for a Rev D or preferably Rev E (i1 Pro2?) unit as they are superior to the older ones?
In April 2005, GretagMacbeth (now part of X-Rite) began shipping a revised version of the i1 Pro Spectrophotometer in all end user packages.
The Revision B instrument is much faster than the older Revision A instrument, but there is no difference in accuracy between the two.
The Revision B instrument also has improved Teflon pads on the bottom to reduce paper scratching.
In August 2006 Rev D was introduced, with changes made to the material content to comply with the Europe RoHS legislation.
Parts of the components were replaced with new materials to make them lead-free.
There was no change to performance in Rev D instruments; in terms of speed and accuracy they are the same as Rev B.
In order to clearly identify the i1 Pro devices in the field a new revision had to be introduced.
But the Rev. A i1PRO it's probably a 10 years old meter.
i1Diagnostics is an i1PRO diagnostics software that is doing some Reflectance measurements using his calibration base and some Emission measurements using your PC monitor.
Reflectance Mode is used measure reflective light (printing/paper industry); to measure displays the Emissive Mode is used.
i1Diagnostics can't tell you enough informations about it's performance on Emissive measurements (for Displays).
You can't see from i1Diagnosis if the meter has drifted.
When you are searching for a used i1PRO1/2, the user who sells it can't prove you if it's still accurate, because to do this, you need a higher grade spectro to compare it and see it it's tracking well.
This is an old test, comparing my own i1PRO1 vs. i1PRO2 using a Samsung SyncMaster 2233BW - TN LCD 120Hz PC Monitor.
I used both meters in contact mode, carefully aligned using Meter Positioning Pattern and Full Field Patterns for the WRGBCMY measurements used.
The i1PRO2 was a brand new unit, i1PRO1 was an only 2 month NIST Re-certificated meter from X-Rite's Factory in Switzerland, both meters were connected to the same PC for 30min for proper warmup.
Which one is measuring better? You don't know which meter tracks better unless you use a reference meter to compare them both.
Another idea is to try to locate and hire a Professional Calibrator with a JETI or Photo Research or Colorimetry Research to provide you only that 4-color matrix correction table as a service for all your displays you have at your place. So the cost will be lower (from hiring him to calibrate your displays) and your performance will be higher since you will have profiled from a real reference spectro. I believe you will stay a lot under $500 and for me it's a better choice from buying even a new i1PRO2 for example.
One friend send his i1PRO2 to Klein Instruments Labs to test it it's performance using a Minolta CS-2000 as a reference to it's NIST Certified Labs, they found by comparing a i1PRO2 to 4 different display a different of max 0.0067 on x/y and 8.93% Y.....and he finally bought a JETI 1211.