Flotsam said:AHHHH CR@P!
Alright! Who told Kodak that I have settled on Polymax 8x10 FB SW as my absolute favorite printing medium and am using it exclusively?
Over the years I have shot literally miles of Ektachrome a hundred feet at a time and used lakes of E-6 chemistry, not to mention the color neg, paper and B&W. And yet... they just never seem to miss a chance to sit on my face at every opportunity. It's gotta be personal.
Well, hopefully there will still be Polymax DW... at a dime a sheet more.
Jennifer said:They use the "same" emulsion on the fiber and RC paper. If you make a test print on RC, you will know what to expect on fiber
Alex Hawley said:That's one of the basic differences between RC and FB. Emergence time on RC is typically 10 seconds, but 30 seconds for fiber. Total development time is typically 1 minute for RC, 2-3 minutes for fiber. There are some exceptions to this, but these times are good in the general case.
It can very well be only because of the base difference. With Fiber, the paper is thicker than RC. That means that although more chemicals are soaked up by it, it takes more time for the "soaking" to take effect. With RC, which is Plastic/emulsion/paper/plastic, the soaking is much more immediate, because there is less absorbtion going on.Flotsam said:Yes, but is that only because of the base difference? Jennifer says that Ilford claims that it is the same emulsion on both papers. It doesn't make sense to me.
Flotsam said:Alright. In the interest of furthering human knowledge, I just did an experiment.
I took a strip of Ilford MG RC and a strip of Ilford MG FB, exposed them to white light, and put a drop of Dektol 1:3 on the surface of each, removing absorbtion as a factor, and watched my my trusty, rusty gralab timer. Here are the results:
The RC started to show density at 3 seconds and appeared fully black at 10.
The FB showed tone at 10 secs and didn't appear to max until 30 secs.
I'm open to explanations but it just don't sound like the same emulsion to me :confused:
Alex Hawley said:Neal, or anyone else, try it this way. Take a negative, expose it and print it on Ilford MG RC. Try making as good a print as you can, whatever that takes, but do it on the RC paper. Then, do the EXACT same thing (exposure wise) on Ilford MG FB and develop it accordingly (2-3 minutes or whatever is necessary).
Now, after drying, compare the two. How close are they to one another? (Most likely, pretty durn close).
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