Standard Finishing
4OverXerox

Announcement

Collapse
No announcement yet.

Negative vs Positives

Collapse
Canon
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • Negative vs Positives

    Can someone shed some light into the following.

    We still make film and always calibrate using negatives, we tried to calibrate with a postivie and there is quite a difference between the measurement of the Negs and Positive.

    Is there a logical reason why this is?

    Example: Neg 50% at 53 Positive 50% at 58 Neg 60% at 62 Positive 60% at 67


    Using Harlequinn Rip.


    Thank you in advance for any info.



  • #2
    Just so I better understand, you are using the same film but the imagesetter exposing polarity is being changed?
    If you corrected the calibration on negative film 50=50, then output positive does it get better?
    Steve Suffoletto

    Comment


    • #3
      Hello Steve,


      Thanks for asking. Have not gotten it to a 50=50 we usually just go with a 50% + or - 2%.

      Comment


      • #4
        Oh! I had that too, yonks ago. The cause was that the calibrations Strip was set with a round dot screen, better would be a euclidian as it should have a perfect checker-board at 50% if your callibration is correct.

        Comment

        4OverCanonKBAAvantiXeroxSmartsoft (Presswise)DuploAMSEnfocus

        Free Download

        Collapse

        Trade Show Survey=
        Instant October Trade Show Survey
        Come On! Only 5 Questions

        PRINT 19 and PRINTING United are squaring off in October.
        Will you be at one of them?
        Both? Neither?
        Please take our 1-Minute survey to tell us about your plans for the two big fall shows!

        Take The Survey.

        CanonXeroxSmartsoft (Presswise)DuploAvantiGraph Expo4OverKBAAMSAvantiEnfocusGraph Expo

        What's Going On

        Collapse

        There are currently 4195 users online. 80 members and 4115 guests.

        Most users ever online was 6,855 at 12:33 PM on 06-06-2019.

        Working...
        X