Re: Calibration of Fuji Frontier
Re: Calibration of Fuji Frontier
- Subject: Re: Calibration of Fuji Frontier
- From: Randy Wright <email@hidden>
- Date: Mon, 23 Feb 2004 21:16:51 -0800 (PST)
Simon Olding <email@hidden> wrote:
>
>>>>>>
Has anyone had any experience with these systems and
their built in
calibration? Is the above statement true that the one
control strip
balances all the printing stocks? And has anyone any
comment about the
tolerances that fuji uses on these machines? The
operator tells me that
even though he can see a shift in the different glossy
stocks, the fuji
reps tell him it is within tolerance.<<<<<
The Frontier has a densitometer attched to the printer
unit. One paper stock is chosen as a master, and a
calibration image is internally generated, printed,
and processed. The resulting print is then fed through
the densitometer, and the software self adjusts the
exposure to meet a predetermined balance aim. If the
print is not within a certain tolerance, it asks for
the cycle to be repeated until the aim is met. All
other paper stocks are balanced with the same
procedure, but their exposures are subject to change
when the master paper is rebalanced. The standard
settings for the acceptable tolerance is .05 density
units. I don't know if this is absolute or plus or
minus. There is a hack to reduce this as low as .03,
but very few labs are willing to operate this way
because it increases the number of iterations required
to balance the machine. As a practical matter, the
Frontiers are pretty consistent. If you want to hedge
your bet a bit, gather prints of different sizes made
on different days, and average your readings together.
Unless you intend to display your work as side-by-side
comparisons with itself, you will be hard pressed to
see much day-to-day difference.
Randy Wright
Color Services
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