Digital BW, The Print

Hi,

I am new to this group. I am an amateur photographer living in NorthWales,
working in medium format, and scanning and printing both color and
monochrome on inkjet printers.

I have been using Piezography inks for about a year but I now want to
replace them as they tend to be rather warm on my usual papers and show
marked metamerism. Since I am not interested in toning as such but would
like some ability to control the warmth/coolness of a monochrome print, VM
looks to be a logical alternative. Several questions come to mind:
1. Can VM be expected to have an indoor display life of around 50 years or
more when used with suitable media?
2. Does aging alter the tone of prints made with VM?
3. Is there marked metamerism? I use long-life, high efficiency fluorescent
lighting at home and this emphasises metamerism.
4. Does the choice of paper have a marked effect on the achieved tone?

Thanks,

Tim
--
Tim Mimpriss

--- In DigitalBlackandWhiteThePrint@y..., "Tim Mimpriss" 
<tim.mimpriss@t...> wrote:
> Hi,
> 
> I am new to this group. I am an amateur photographer living in 
NorthWales,
> working in medium format, and scanning and printing both color and
> monochrome on inkjet printers.
> 
> I have been using Piezography inks for about a year but I now want 
to
> replace them as they tend to be rather warm on my usual papers and 
show
> marked metamerism. 

Snip)

> 3. Is there marked metamerism? I use long-life, high efficiency 
fluorescent
> lighting at home and this emphasises metamerism.

Tim,

There seems to be a great deal of variation in how people perceive 
metamerism with Piezo and with MIS VM. It seems that most people do 
no see at all. The amount also varies from paper to paper and from 
printer to printer.

Those of who do see a metamerism, Piezo looks slightly or strongly 
olive-green to yellow-green under tungsten light and shifts to warm 
neutral in daylight. MIS VM shifts in the opposite direction. It is 
neutral under tungsten and halogen lights and shifts towards a blue-
green in daylight.

Personally, I find the MIS VM metamerism less objectionable.

Martin Wesley


(snip)