Hi,
Picked-up some arista paper (EDU RC, VS Pearl) and went through Zonemaster II calibration. These are the results in case anyone is interested.
Exposure correction: I used 1/4 stops (grade 00-5) followed by 1/6 stops for grade 4 and 5. A Macbeth reflection densitometer was used to help match target density between tile and paper. I'm not sure how helpful that was. I had to use a blank processed piece of film as neutral density to bring the initial exposure time up to 16 seconds.
Contrast value: I used the 19 step test negative shipped with original Zonemaster II and determined values using the February 2006 published contrast calibration...I'm not sure if these were updated since 2006. I know they changed the process employing a Stouffer 21 step wedge and a calculation to determine the value, but not sure how well the two methods compare.
Filters: 20 yr old set of standard Ilford multigrade filters, so they are likely slightly faded. Note to self: New contrast filters.
Enlarger: Leitz Focomat I color, Bulb: Phillips PH211, 75w
grade/offset/contrast
00/-11/210
0/-12/190
1/-9/159
2/-9/145
3/-7/120
4/-10/105
5/-12/90
Disclaimer: Individual happiness will vary.
Picked-up some arista paper (EDU RC, VS Pearl) and went through Zonemaster II calibration. These are the results in case anyone is interested.
Exposure correction: I used 1/4 stops (grade 00-5) followed by 1/6 stops for grade 4 and 5. A Macbeth reflection densitometer was used to help match target density between tile and paper. I'm not sure how helpful that was. I had to use a blank processed piece of film as neutral density to bring the initial exposure time up to 16 seconds.
Contrast value: I used the 19 step test negative shipped with original Zonemaster II and determined values using the February 2006 published contrast calibration...I'm not sure if these were updated since 2006. I know they changed the process employing a Stouffer 21 step wedge and a calculation to determine the value, but not sure how well the two methods compare.
Filters: 20 yr old set of standard Ilford multigrade filters, so they are likely slightly faded. Note to self: New contrast filters.
Enlarger: Leitz Focomat I color, Bulb: Phillips PH211, 75w
grade/offset/contrast
00/-11/210
0/-12/190
1/-9/159
2/-9/145
3/-7/120
4/-10/105
5/-12/90
Disclaimer: Individual happiness will vary.
