[alt-photo] Re: New Platinum Prints

[Mark Nelson]

David,

My guess is that you are compensating for the lack of negative density  
with the 1400 inkset by reducing exposure to get good highlight tones  
thus losing DMax. Try using all inks with an RGB black & white  
negative in Adobe 1998, but increase the contrast of the pt/pd mix  
gradually til it matches the density of the negatives. Just print  
digital 21 step tablets.

The 1400 probably works well with gum because you don't need much  
density for gum.



Mark Nelson
www.PrecisionDigitalNegatives.com
PDNPRint Forum @ Yahoo Groups
www.MarkINelsonPhoto.com

sent from my iPhonetypeDeviceThingy

On Apr 10, 2010, at 3:42 PM, David Hatton  
<davidh6180483 at googlemail.com> wrote:

> Etienne,
>
>
>> the characteristic lush smoothness one expects from Pt -- I suspect  
>> because
>> you're using a contrast agent rather than making negatives with the  
>> proper
>> DR for the process (generally, somewhere between 2.1 and 3.0).
>>
> This is something that's been concerning me lately. I've been
> preparing my negs for palladium digitally using Mike Wares method. The
> reason for this is that my printer (Epson 1400) won't allow me to use
> any other method as the inks are not very dense. I manage to get
> satisfactory gum prints but I'm thinking I could be missing out on
> something in my palladium experiments. My exposure time using BL tubes
> is 60 seconds. The prints look ok but nothing special. Could this lack
> of negative density have something to do with the way they look? If so
> why?
> Regards
> Davidh
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