Lynn,
Yeah, I must not have that technique down. I can blur the blue channel OK
but when I go back to the 'RGB' view, I don't see much, if any change. Is
there a specific technique to use in PS 6 to do this? I've got some pictures
of the Grand Canyon, shot during overcast and stormy conditions - talk about
a lot of blue and, consequently, a lot of grain. The Canyon under these
conditions had a blue cast throughout. Decent shots but lots of grain after
scanning.
Norm Unsworth, Owner
CS Golf (formerly Clark Systems Custom Golf)
Outstanding Quality and Value in Custom Golf Equipment
609 641 5712
Please send email to me at: csgolf@home.com
Visit our Web Site at
> -----Original Message-----
> From: owner-filmscanners@halftone.co.uk
> [mailto:owner-filmscanners@halftone.co.uk]On Behalf Of Lynn Allen
> Sent: Saturday, July 14, 2001 9:19 AM
> To: filmscanners@halftone.co.uk
> Subject: Re: filmscanners: Grain, Noise, et al
>
>
> Norman wrote:
>
> >>From a practical, rather than a causative approach, how have
> folks dealt
> >>with this issue, both in terms of minimizing apparent grain
> from scans and
> >>in improving (ie: reducing) the appearance of 'grain' in Photoshop?
>
> Norman, your defocussing scheme is undoubtably the fastest way to reduce
> grain, although you pay a penalty (but surprisingly slight) in sharpness.
> Some of us (notably Maris) have found that separating the photo
> into its RGB
> components, blurring the Blue "mask", and then recombining them
> eliminates
> much of the grain with almost no obvious loss of detail. On
> occassion, I've
> had to blur *all three* components by varying amounts--which of course
> brings it back around toward the original concept of defocusing,
> with much
> more time spent but slightly better control.
>
> With Picture Publisher 8 I've been able to isolate grain and/or
> noise pixels
> and change their color closer to what it's supposed to be, but have never
> been able to pull that trick off with Photoshop. Maybe someone else has
> figured out how that's done in PS. ?
>
> Best regards--LRA
>
>
>
> >From: "Norman Unsworth" <unsworth_norman@aclink.org>
> >Reply-To: filmscanners@halftone.co.uk
> >To: <filmscanners@halftone.co.uk>
> >Subject: filmscanners: Grain, Noise, et al
> >Date: Fri, 13 Jul 2001 10:26:39 -0400
> >
> >I wanted to seek the input of list participants into the question of
> >minimizing grain and noise in 35mm scans. While it varies according to
> >subject matter, predominant color, film type and speed, all scans seem to
> >have some degree of grain / noise not found in the prints. I've used both
> >Vuescan's ability to manually focus (actually, slightly out of focus) and
> >grain reduction to reduce what I'm calling grain but obviously there are
> >drawbacks in the form of reduction of sharpness, in either of these
> >solutions.
> >
> >By way of background, I use a Minolta Scan Dual II, with Vuescan and I
> >always scan at the maximum resolution (2820, I believe), usually 48 bit.
> >Color and film settings I vary depending upon what will get me the 'best'
> >scan.
> >
> >From a practical, rather than a causative approach, how have folks dealt
> >with this issue, both in terms of minimizing apparent grain from
> scans and
> >in improving (ie: reducing) the appearance of 'grain' in Photoshop?
> >
> >Norm Unsworth, Owner
> >Clark Systems Custom Golf: Outstanding Quality and Value in Custom Golf
> >Equipment
> >609 641 5712
> >Please send email to me at: clarksystems@earthlink.net
> >Visit our Web Site at
> >
>
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