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Re: [OM] OM16mm was - 14mm rectilinear Sigma for OM

Subject: Re: [OM] OM16mm was - 14mm rectilinear Sigma for OM
From: Fernando Gonzalez Gentile <fgnzalez@xxxxxxxxxxxxx>
Date: Thu, 05 Mar 2009 14:22:33 -0300
Rushing out to work - shaññ do so tomorrow afternoon

Thank you

:-)

C.H.Ling wrote:
> Question - does your scan look close to your original slide? (I hope there 
> is no mess up on monitor profile). If yes, why you need to adjust it?
>
> If you don't mind just send me a copy of your resized original scan.
>
> C.H.Ling
>
> ----- Original Message ----- 
> From: "Fernando Gonzalez Gentile"
>
> Sorry - I was referring to my own re-scans. In none of them, either
> channel reached 255.
>
> But I had rather contradictory advices regarding this, one of them ( the
> reason of why I mentioned white point ) - is that trying to find the
> 'whitest possible white point' ( 255 @ each channel ) is almost
> impossible. When I happen to find one close to this value in RGB, either
> channel diverge from black point, and levels curve slightly ( or not
> 'slightly' ) change. Worst is gray point ...
> I'm referring to Nikon Scan 4.0.2
>
> Your advice is most welcome.
>
> Fernando.
>
> C.H.Ling wrote:
>   
>> Are you talking about your rescan or my images? For my images 001 and 002 
>> do
>> have R and G channel reach 255.
>>
>> I will never force RGB to 255 as long as the subject has proper 
>> brightness.
>> For landscapes, if they are too far away I will move the master level 
>> closer
>> to 255. Never move individual channel to 255 otherwise you will change the
>> color.
>>
>> C.H.Ling
>>
>> ----- Original Message ----- 
>> From: "Fernando Gonzalez Gentile"
>>
>> Amazing difference in my own experience -
>> In Nº1: black point was 0, 0, 0, but white did not reach 255 in either
>> channel (different straight lines for R, G, B.)
>> Nevertheless, the histogram showed no pixels at 255 in any channel.
>>
>> Nº2 has lots of light (in the bluishness of the sky, etc) and looks far
>> more near to the Provia - from scratch.
>>
>> Hey, seems I'm beginning to rebuild what I took for granted since I got
>> the 4000ED :-)
>>
>> Fernando.
>>
>>
>>
>> C.H.Ling wrote:
>>
>>     
>>> I would say no even to black and white point.
>>>
>>>       
>
>
>   

-- 
Dr. Fernando González Gentile M.D.
Av.L.P.Ponce 1526B - 11600 Montevideo, Uruguay.
Phone: +598 2 7084858
Fax:      +598 2 7087396
<fgnzalez@xxxxxxxxxxxxx>



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