Losing dots in film

[kburton]

Hello,

Our company still uses film from our Agfa Phoenix 2000, we are having an issue where we are losing dots in the highlight area. I have calibrated the imagesetter to be linear and still losing Dots.

My question is, if we set up our imagesetter to as close to a G7 press-curve, will this take care of our problem?

[prepresscolor]

Must adjust your entry numbers for the computer to give you the "highlight" dots you want. You may have to adjust the ramp of numbers two or three times to get what you want. Watch your "shadow" area too so it does not gain too heavy.

Hello,

Our company still uses film from our Agfa Phoenix 2000, we are having an issue where we are losing dots in the highlight area. I have calibrated the imagesetter to be linear and still losing Dots.

My question is, if we set up our imagesetter to as close to a G7 press-curve, will this take care of our problem?

[kburton]

Must adjust your entry numbers for the computer to give you the "highlight" dots you want. You may have to adjust the ramp of numbers two or three times to get what you want. Watch your "shadow" area too so it does not gain too heavy.

Are you talking about the numbers for the linearization or for the press-curve?

[kburton]

Anyone have any other suggestions or answers?

[meddington]

You'd need to address the issue of dot loss (possibly exposure or processing related?) prior to any curve compensation.

[kburton]

The Dot loss also shows up in the RIP before imaging is done, so I don't know what my next step is.

[Joe Duffy]

Start a curve over from scratch.
Output a uncalibrated strip and read it and then check the image. The calibration can corrupt over time if you have made several moves to it to tweek it.

[kburton]

Start a curve over from scratch.
Output a uncalibrated strip and read it and then check the image. The calibration can corrupt over time if you have made several moves to it to tweek it.

Ok I just setup a new linear curve and the calibration test came out really good, but when I send over a file I am still getting the blown out/dot loss in the same areas, what do I do now?

[gordo]

Are you positive that the tones are in the file itself?

Gordo

[maxon]

The Dot loss also shows up in the RIP before imaging is done

Make sure the Phoenix itself is within specs using test patterns. Do incoming files contain RGB or CMYK images ? Turn off color management in rip and retest. If it doesn't cure the problem write down essential data or back up rip critical settings and reinstall the Taipan or Apogee whatever you have there, will take at least one day to put back everything into place from scratch. Good luck.