Re: nuArc 26-1K - initial setup, calibration, testing...

Hey Mark,

Thanks. I guess I just thought the light would come on faster than what I
was expecting with metal halide, I don¹t know where I got that presumption.
I understand that the integrator accounts for this, how can I test if the
integrator is measuring accurately (if the photo diode is a dud)? Or is it
ok as long as it is consistently inaccurate (I¹d rather avoid this).

I read another archive thread by Sandy where he had an issue exposing four
sheets of the same neg in a row, where the fourth sheet showed much more
density than the first. John Cremati made a few comments, among them saying
that one could add a manual shutter using aluminum.

When does one know to pull the shutter (I guess you need to do testing to
find out when your bulb has reached its maximum output?). I¹m just curious
about this, I don¹t think I¹ll be in a situation where I¹ll be printing in
such succession for a while.

Thanks again,
Gu

On 6/11/06 10:48 PM, "Ender100@aol.com" <Ender100@aol.com> wrote:

> Hi Gu,
>
> That may have been me‹I think there is some variation with the NUARC over
> different areas of the bed, but it doesn't seem to show that much in prints...
> just in some of the calibration targets where you are measuring variances
>
> The light will not come on right away‹however, that is part of the reason the
> unit has an integrator...it is measuring units of exposure, so it is
> accounting for the light taking some time to reach full illuminance.
>
> Best Wishes,
> Mark Nelson
> To NSA: When you read this email, would you please search your database for my
> other black sock?
> Precision Digital Negatives--The Book
> <http://www.precisiondigitalnegatives.com/>
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>
>
> In a message dated 6/11/06 9:05:07 PM, guruguhan@hotmail.com writes:
>
>
> If it isn¹t powering up quickly ­ is it just a matter of replacing the bulb?
>  The unit itself is in very good condition, so I don¹t believe it was
> mistreated/abused.
>
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Received on 06/11/06-10:23:53 PM Z