[filmscanners] Re: SS 4000 Questions

["Brad Davis" <DocBradd@mac.com>]

On 3/12/03 14:55, "Arthur Entlich" <artistic-1@shaw.ca> wrote:

> david.gordon wrote:
>> Les Berkley wrote on Tue 2 Dec 2003 at 18:51 -0500
>>
>>
>>> Lastly, is there a way to shut the "front door" to keep out dust?
>>
>> Lots of replies to this about using a shoe box etc. However I seem to
>> remember Polaroid being Very Pleased with their anti-dust design work
>> in the SS4000. I've never protected my SS4000 and I assume plenty of
>> dust gets in. But as far as I can see its only dust or dirt on my film
>> that is a problem. I don't think you will ever see dust on the sensor
>> - if that is what people are worried about.
>> --
>> david.gordon
>>
Noise: You might think that the unit is destroying itself, and sometimes it
goes on forever.  At first I simply figured that it would have to go in for
repair (under warranty), it never happened.

Lights: They stay on for unreasonable times - but that doesn't seem to
matter.

Dust:  My unit has lived through a remodeling, excessive amount of dust, but
none that I can detect in the unit.  I think that I need the brush - if the
type of carrier is also determined by an optical system - well, my unit
often seems to lose track of the type of carrier, especially if it is the
negative carrier.  It then reverts to the setup for the transparency
carrier.  The only solution I have found is to turn it off and then restart
it, that works, but it may lose it again.  Curiously, the problem is wo4rse
with Silverfast, than with Insight.  There was a time when I could detect
some banding, but that seems to have resolved itself.  I am still waiting
for an affordable unit that improves on the Polaroid .

Brad


>
> You may be correct, but there are two issues to consider.  One is that
> the carrier position sensor works on light transmission, and this can
> and does sometimes get covered in dust and then the scanner cannot
> locate the carrier correctly.  Polaroid offers a small brush that fits
> on the carriers to use periodically to remedy this, but perhaps using a
> dust cover will lessen the need, although I suspect most of this dust
> hitchhikes on the carriers themselves.
>
> Secondly, I have heard from people who have found it necessary to open
> their SS4000 scanners for one reason or another, and they claim that
> some of the optical components do get grimy or dusty, and that upon
> having them cleaned, the scan quality improved. It strikes me, although
> I have never opened my unit up, that since the carrier and film need to
> intercept the optical path, that dust can also.  The film has to somehow
> go between the light source and the lens, either directly or via some
> mirrors, and if those components get dusty, they would degrade the image
> quality.
>
> For the time and cost considerations in protecting the scanner when not
> in use, (what's a shoebox sell for these days ;-)) it seems like a
> worthwhile investment.
>
> Art
>
>
>
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