LPL C6700 Filter Colour Filter Settings for B&W Prints.

[tripleteer]

Hi All.
I have Bought a C6700 colour enlarger, I want to know what filter settings to use for decent quality black and white prints, Thanks in advance for any help! Paul.

 

[teejay]

Hi - I have same enlarger and used this as a starting point-

https://www.ilfordphoto.com/wp/wp-content/uploads/2017/03/Contrast-control-for-Ilford-Multigrade.pdf

 

[tripleteer]

Thanks teejay. Can I ask what number you use on Magenta Yellow and blue, and do use the White light lever?
( when printing B&W of course ).. Paul.

 

[jimjm]

I use the same Ilford document as my reference for dialing-in filtration on the LPL dichroic color heads.

LPL/Saunders/Omega enlargers use the "Kodak" filter settings, and it's your choice whether to use the Single or Dual color filter settings. Single color settings use the yellow filter for grades softer than 2, and the magenta filter for grades harder than 2. Dual color settings use a combination of both Y/M to achieve the desired grade. Your printing times will be longer with Dual filtration, but I prefer this as it gives me more time for any burning/dodging I need to do.

Generally, grade 2 is considered a good starting point. I find that my LPL dichroic head prints a bit less contrasty than standard condenser enlargers, so I use grade 2.5 or 3 to start. Ultimately, negative quality, paper used and your personal preference will determine what are the "best" contrast settings to use.

 

[Martin Rickards]

Assuming a normal negative requiring a grade 2 paper, you shouldn't use any colour filtration, i.e. 0 yellow, 0 magenta: This is fairly standard for all colour enlargers. Increasing or decreasing contrast requires different amounts of magenta or yellow depending on the enlarger. Your LPL uses the Kodak values.

 

[tripleteer]

Thanks Lads, Where do I find the Kodak Values?

 

[Martin Rickards]

Page 3 on jimjm's link.
PS Most multigrade paper comes with these recomendations included in the box.

 

[tripleteer]

Thanks Martin.

 

[jimjm]

Thanks teejay. Can I ask what number you use on Magenta Yellow and blue, and do use the White light lever?
( when printing B&W of course ).. Paul.

You won't need the blue filtration for B&W. For grade 2 equivalent in single filtration, both Y & M set to 0. Dual filtration would be 41Y/32M. The only difference is your print exposure time will be longer with Dual filtration.

I use the white light lever so I can pre-set the filters, but move them out of the light path when composing or cropping the image on the easel. It's easier (for me) to see the projected image in white light.

 

[tripleteer]

Thanks jimjm, I am a newbie at this but I get what you are explaining to me, so I thank you for that.