Archived posting to the Leica Users Group, 2010/01/11

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Subject: [Leica] [OT] Scanning Kodachrome help
From: philippe.amard at sfr.fr (philippe.amard)
Date: Tue, 12 Jan 2010 08:56:01 +0100
References: <E8DFA4CE-D3BD-4629-8305-88BD92A0B418@aotera.org> <c7c8cf881001112311q63cdb046w62a8b5e0c7fec420@mail.gmail.com>

I just tried this
Magenta adjustment only (saturation down 99), in LR

http://gallery.leica-users.org/v/Phileica/Playground/ICe-LR-Magenta+saturation+minus+99.jpg.html



Best
Philippe


Le 12 janv. 10 ? 08:11, Pasvorn Boonmark a ?crit :

>
> Hi Spencer,
>
> Wow, this is a tough one.
>
> Original - <http://www.aotera.org/tmp/ice.jpg>
> With my adjustment -
>   <http://farm5.static.flickr.com/4037/4267753913_c31ba96125_b.jpg>
>
> This is what I did:
> a) duplicate layer
> b) desaturate RED, and Magenta
> c) Overlay the top layer and adjust opacity
>
> The top part looks more B&W.  Not sure how it looks on your screen.
>
> -Pasvorn
>
> On Mon, Jan 11, 2010 at 8:26 AM, Spencer Cheng <spencer at aotera.org>  
> wrote:
>> Folks,
>>
>> I've been working on scanning some Kodachrome slides using mostly  
>> Vuescan as that is the one I am most familiar with. I've calibrated  
>> my scanner with an IT8 target I bought from Silverfast in both  
>> Vuescan and Silverfast. I've calibrated my MacBook Pro's screen  
>> with a Datacolor doohickey.
>>
>> One group of slide has been very hard to scan. I can't seem to get  
>> rid of an magenta'ish cast. The pictures was shot on an overcast  
>> day [Edith Cavell glacier, Jasper National Park (Canada)]. The  
>> original slide has a beautiful milky green tone to the water and  
>> the snow banks was almost white - definitely not magenta.
>>
>> If I correct for the snow, the water turns grey. If I correct for  
>> the water, the magenta cast gets worse.
>>
>> I've tried this in both Silverfast and Vuescan. Both gives similar  
>> results. It's driving me crazy.
>>
>> Here is an example of a very bad scan from Silverfast.
>>
>> <http://www.aotera.org/tmp/ice.jpg>
>>
>> Any suggestions?
>>
>> Regards,
>> Spencer
>>
>>
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>>
>
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>




Replies: Reply from hopsternew at gmail.com (Geoff Hopkinson) ([Leica] [OT] Scanning Kodachrome help)
In reply to: Message from spencer at aotera.org (Spencer Cheng) ([Leica] [OT] Scanning Kodachrome help)
Message from pasvorn at boonmark.net (Pasvorn Boonmark) ([Leica] [OT] Scanning Kodachrome help)