Re: SS 120 focus problem solved

["Harry Minoru Shin" <ring-of-fire@xxxxxxxxxx>]

Simon:
1.  Please keep us (me) updated on any response / recommendations you
get from Polaroid or Silverfast in regards to the focusing issue.  I've
noticed decreased sharpness in the middle of the film (35mm) with increased
sharpness near the edges--I assume this is so because the film is closer
to the film holder at the edges.   But looking at the final prints--excellent
sharpness and thus pragmatically it's not that huge of an issue since
I use 35mm.  

Thanks.  Harry Shin


---- Simon Lamb <simon@sclamb.com> wrote:
> OK, I have found the problem with the intermittent focus error on the
> Sprintscan 120.
> 
> Here is the secenario.  I put a strip of three 6X6 Delta 100 negs in
> the
> carrier and scanned the first one using Silverfast.  Absolutely tack
> sharp.
> I turned the strip round so that the first frame was now frame three
> and
> scanned again using SF.  The scan was soft and slightly out of focus.
>  Tried
> resetting the negs in the carrier and scanned again but still soft.
> 
> I left the strip in the carrier and the carrier in the scanner (i.e.
> I did
> not touch it in any way) and scanned frame three using Insight.  It
> was tack
> sharp.  I have now recreated this five times with different films etc.
> 
> So, the only logical conclusion is that SF is not focusing the SS 120
> properly, or at least it is causing intermittent focus errors, perhaps
> not
> having sufficient depth of focus.  Insight is always producing tack
> sharp
> scans and the focus is spot on on every one, regardless of which frame
> is
> being scanned.
> 
> I will report this to Polaroid and Lasersoft and see what their response
> is.
> 
> Simon
> 
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