chris jordan
27-Jun-2001, 10:56
Hi all,
Anyone know much about color filtration? (for B&W use) I just purchased an ancie nt Chromega color head "D" series (along with a beautiful D4 chassis), and am wo rking on the assumption that the filters have faded miserably over the years. I haven't had a chance to use it yet, though. I know that replacements are no long er available...
I have come up with the following solutions and any feedback would be welcome.
1) Cut out an Illford Ilfochrome color filter .40 magenta (for example) to size, as a replacement filter
2) Rely on the old filters, but place a 2 1/2 contrast filter in the base of the mixing chamber to raise the magenta "baseline" up to a usable level. The additi onal magenta from the old filter would then just add contrast on top of that.
3) Do some combination of both. Anyone know if color filters are additive (or w ould that be subtractive) in this way?
4) give up and use filters under the lens (sacrificing some optical performance)
Thanks!
Anyone know much about color filtration? (for B&W use) I just purchased an ancie nt Chromega color head "D" series (along with a beautiful D4 chassis), and am wo rking on the assumption that the filters have faded miserably over the years. I haven't had a chance to use it yet, though. I know that replacements are no long er available...
I have come up with the following solutions and any feedback would be welcome.
1) Cut out an Illford Ilfochrome color filter .40 magenta (for example) to size, as a replacement filter
2) Rely on the old filters, but place a 2 1/2 contrast filter in the base of the mixing chamber to raise the magenta "baseline" up to a usable level. The additi onal magenta from the old filter would then just add contrast on top of that.
3) Do some combination of both. Anyone know if color filters are additive (or w ould that be subtractive) in this way?
4) give up and use filters under the lens (sacrificing some optical performance)
Thanks!