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List Info
Thread: Manual Focus
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| Manual Focus |
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2006-04-09 15:43:25 |
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Hi Burney,
I respect your sentiments about not wanting anyone to '...break their beloved scanner...'
I am not thrilled about keeping pertinent information about getting the best from a
LeafScan 45 under wraps and treating members of this group as idiots or second class
citizens.
Months ago I posted a problem about sharp focusing and my LeafScan 45 and got all sort
of dumbed down answers from guys including Austin who now it appears had information
that could have helped me get nearer the sharpness I desire from the scanner.
I beiieve that all information should be shared openly - with any caveats about potential
problems outlined so LeafScan owners can dedcide themselves what risks they may take
in the pursuit of perfection from their scanners.
Of course I can see that smoke screens from Burney and Leafscan.com may be laid to
protect their respective commercial positions re - selling glass carriers and servicing
LeafScan machines - after all knowledge is power and loads of bucks!!!
What do other members think?
Roger
--- In Leafscan@yahoogroups.com, "Burney Poh, Professys asia Sdn Bhd" <burney ...>
wrote:
>
> Hi Mike,
>;
> I just do not want a non tech person to break their beloved scanner.
>
> I feel sorry too.
>
> Regards,
> Burney
>
>
> >Burney,
> >I just replied to someone who inquired as to how to do a manual
> >adjustment a minute before I read your request NOT to do this-SORRY
> >ABOUT THAT! I wouldn`t have done that if I had gotten this email
> >sooner.
> > ----- Original Message -----
>; > From: Burney Poh, Professys asia Sdn Bhd
> > To: Leafscan@yahoogroups.com
> > Sent: Saturday, April 08, 2006 7:35 AM
> > Subject: Re: [Leafscan] Manual Focus
>; >
> >
> > Hi Mike,
>; >
> > I am waiting for a 220v lamp ballast to fix my 220v LS45 so that I
> > can simulate your problem with a demo copy of Silverfast. Mean while
>; > please bear with me until I figure out a solution for you. I can
> > understand your frustration.
> >
> > I would appreciate you do not public discuss the manual focus
>; > procedure on the Leaf Yahoo forum as it is part of Leaf tech internal
> > diagnostic process and only include and make available for Glass
>; > Mount application in the scientific and medical customer as they are
> > not able to prefocus their samples on the Glass. By public discuss
> > the manual focus procedure may cause ambitious user to start moving
> > both the lead screws and landed some unforeseen disasters. If you do
> > it right, the sharpness is unbelievable. I know It will definitely
> > causing a hot issue if you release that. I do not want to drag into
> > helping to fix any unforeseen problem as most of the scanner are old.
> >
> > Austin Franklin, being a member of the Leaf LS45 R & D advisory is
> > fully aware of the manual focus procedure and he 'hinted' the problem
> > may be due to the firmware and not Silverfast but I disagree as the
> > Leafscan has three paisr of default focus values that is make up of a
> > camera stage position pairs with a lens position for 1270 dpi, 2540
> > dpi and 5080 dpi. The left lead screw that varies the camera stage
>; > should not be disturb during the manual focus procedure. Only manual
> > focus using the right lead screw.
> >
> > Soft focus with F4.7 and 4x5 film format has been discuss previously
> > but not definite answer. When Rick Fontaine still working at Scitex,
> > he did posted several answers at the early days of the Leaf forum. He
> > is retired now and will not response to any post now. He suggested to
> > swap the CCD but there are not more new CCD available on the market.
> > Leafstuff only pick up their spare from broken LS45.
>; >
> > As Soon as I get my LS45 working, I will get the default focus height
> > for the three resolution settings for you so that you can fine turn
> > it with plus and minus 2 mm interval to detect you optimal sharpness
> > and use it for optimal results. I suspect the CCD may be weak but
> > that remain to be verify. I will check with my scanner and silver
> > fast first. Meanwhile I believe if your trouble is with the F4.7 at
> > 4X5 film format, you can try manual focus with bracket plus and minus
>; > 2 mm interval, scan a small portion and pick the height that work
> > best for you. It may work out great for you and happy scanning.
> >
> > Let me know if any other problem cope up that you need assistance
> > with the LS45. I am selling Glass Mount only but remain very
> > supportive to the LS45 community in a quit manner. I solved many
> > unanswered posts on the forum lately with many more happy LS45 new
> > user. I do not quite like to discuss too much things on the forum as
> > there are many 'smart people' out there not too helpful but only like
> > to pour cold water onto the helpful and passionate user.
>; >
> > You have a earlier question of have to get the best sharpness, I
> > actually have an answer for you but let me compile all the pieces and
> > send it to all the glass users later. It have to do with three
>; > sharpening procedures that I develop working with Scitex highend
> > scanner. You can apply it interactively in Photoshop with great
>; > results, the parameters will varies depend on the images. I also like
> > to answer your question you posted with regard to using Don Hutcheson
> > HCT target in the leaf forum and in the color theory forum. Don
> > Hutcheson is my friend when we work with Franz Herbet, one of the
> > Colorsync color scientist and the lead scientist for Colorblind Color
>; > management system.
> >
> > That much for now but if you have any other question, feel free to
> > ask. I will answer it to the best of my knowledge.
> >
> > "IT IS GOOD TO GAIN A NEW FRIEND BY SHARING KNOWLEDGES GRACEFULLY."
> >
> > Regards,
> >
> > Burney
> >
> >
> > >Hi Mike,
>; > >You mentioned in your recent post that you manually adjusted the
> > >focus on the LeafScan
> > >45 by 3mm. How exactly did you do that please?
> > >Thanks
> > >Roger
> > >
> > >
> > >
> > >
> > >
> > >
> > >Message Archives
> >
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> > >
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