Re: Portable Spectrophotometers
Re: Portable Spectrophotometers
- Subject: Re: Portable Spectrophotometers
- From: Tom Beckenham <email@hidden>
- Date: Fri, 08 Feb 2002 11:05:42 +1100
on 6/2/02 18:09, Henrik Holmegaard at email@hidden wrote:
>
Andrew Rodney <email@hidden> wrote:
>
>
> Nice thing about the EyeOne with ProfileMaker is you can do output profiles
>
> AND displays. It's also able to do spot measurements. It's way cool!
>
>
"Way cool ...", that's a new idiom to remember -:).
>
>
The i1 is a spot reading (: emission and reflection) and strip
>
scanning (: reflection) spectrophotometer. It has a largish aperture
>
of 4.5 mm to integrate more dots and in reflection mode it samples
>
each patch multiple times as it travels. In other words it averages
>
across the patch.
So.. you are saying that the i1 and the iCColor will actually give me better
results than a Spectrolino?
>
So it is possible to first build a profile and then
>
apply colorimetric process control say using the FOGRA CMYK test
>
chart.
>
Could you explain this a bit more please? Do you mean that because I can do
spot readings with the i1, I can read control bars? We are probably going to
use the X-Rite 530 to do all calibration... but yes, if we didn't have that
we need the spot reading capabilities of the i1.
>
But the safest solution is an x-y autoscanning spectrophotometer.
>
Instruments of this type are usually big as a house and about as
>
bulky, except for the iCColor which is a handy little reflection
>
autoscanning instrument where the chart is fed into the front feeder
>
slot and exits out the front exit slot for a minimal desktop
>
footprint. The iCColor is not a strip reader that measures one column
>
at a time, but a chart reader that measures multiple columns at a
>
time. It averages readings across each patch the same as the i1.
>
Because the iCColor knows the x-y position of each patch, it cannot
>
read across columns which results in sampling neighbouring patches on
>
the left or right as a strip scanning instrument might. The
>
calibration tile is built in and calibration is launched on every
>
measurement ... you can't loose or switch the calibration tile and
>
you can't forget to calibrate.
I was impressed by the built in intelligence of the iCColor. I was also told
by Gretag that the iCColor wasn't a "handy little" instrument, but a desktop
unit that wasn't portable at all. Could you take it on the road? Is the
iCColor as flexible as the Spectrolino? Does it read a whole chart at once
like the Spectrolino can? How well can you feed newspaper through its
rollers? Its also really new. Has anyone had enough time with it yet -
independent of Gretag's internal testing?
>
_______________________________________________
>
colorsync-users mailing list | email@hidden
>
Help/Unsubscribe/Archives:
>
http://www.lists.apple.com/mailman/listinfo/colorsync-users
>
Do not post admin requests to the list. They will be ignored.
_______________________________________________
colorsync-users mailing list | email@hidden
Help/Unsubscribe/Archives:
http://www.lists.apple.com/mailman/listinfo/colorsync-users
Do not post admin requests to the list. They will be ignored.