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Robert S. Sfeir |
4:57 2 Dec 03 |
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Phil Davis |
7:17 2 Dec 03 |
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Sandy King |
9:49 8 Nov 03 |
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Phil Davis |
19:24 8 Nov 03 |
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Jorge Gasteazoro |
16:11 10 Nov 03 |
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Sandy King |
17:22 10 Nov 03 |
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Jorge Gasteazoro |
2:38 11 Nov 03 |
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G-bar or SBR: Smooth or Unedited Curves |
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Michael Keslin |
12:08 8 Aug 03 |
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I have just finished a film test using the new Tmax 100 5x7 in BTZS tubes with Tmax RS 1+4 @ 70 degrees. The frist negative I evaluated had a G-bar of .77 and an SBR of 6.3.
My paper has an ES of 1.4. If I use the G-bar chart my development time is 11:30 min using both the unedited and the smoothed curves. If I use the SBR curve the development time is 10:10 for the unedited curve and 10:30 for the smoothed curve. Why are the times different? Is it more accurate to use the smoothed or the unsmoothed curves?
Thank you,
Michael Keslin
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Phil |
16:40 8 Aug 03 |
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Sandy King |
12:10 17 May 03 |
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