PYRO\Ilford MGIV\Aristo cold loght

[ronald_lamarsh1]

I am using Pyro(PMK) wiht HP5+ and Ilford MGIV and an aristo cold light. Since switching to the cold light there has been a noticable drop in the contrast of my prints often requiring me to use at least a #4 filter I am already processing my films at 16min@70deg and hesitate togo higher. Is this just the way it is with a cold light and MGIV or am I doing something wrong?

[duane_kucheran]

This is opposite to my experience. I found that the aristo head gave

me harder prints with the Agfa paper that I use. The head I have has

the older V45 tube that requires a yellow or green filter to reduce

the blue to match an incandescent source when used with VC papers.

 

<p>

 

Do you have the same tube or one of the newer V54 tubes that doesn't

require a balancing filter? In any event, if it's not the negatives,

you might have to balance the light the other way and increase the

relative blue output.

 

<p>

 

Cheers,

 

<p>

 

Duane

[andy-]

After recently switching to an Aristo cold light w/V54 tube from

a condensor light I've had to increase my developing times by about 30

percent or so to get the same contrast w/#2 print filter. At first I

looked at my negs and thought no! they'll never print! but without

increased development I'm up to about a grade 3-3 1/2 filter.