Kodak T-Max 100 (D-76) Development Chart

Testing Conditions:

Hasselblad 501CM + CFi150/4 + A12 magazine
Sekonic L-508 1o Spot meter
Stainless Steel Tank processing, agitate continuously in the 1st minute and every 10 seconds (inverted 10 times) at 60 seconds interval
Kodak D-76 Developer (1:1) at 20oC
Kodak Indicator Stop Bath (1 min)
Kodak Rapid Fixer (10 min)
X-Rite Densitometer 311

 

Observation

The 12 minutes development time is Kodak' recommendation but I find it to be N+1.  The Zone I density also suggest the exposure index to be 80.

By looking at the characteristic curve, it has a more gentle shoulder region than the one developed by T-Max (1:4).  Therefore, a better highlight latitude is expected.

 

Density Table (above Dmin+fog)

Exposure Index 64 64 64 80 80
Development Time (min) 8.5 9.25 10.5 12 14.75
Development N-2 N-1 N N+1 N+2
Dmin 0.08 0.08 0.09 0.10 0.10
Zone Density (above Dmin+fog)
O 0.02 0.02 0.03 0.03 0.03
I 0.10 0.11 0.12 0.14 0.12
II 0.23 0.26 0.29 0.34 0.33
III 0.39 0.43 0.48 0.57 0.60
IV 0.54 0.60 0.66 0.78 0.89
V 0.72 0.79 0.86 0.99 1.12
VI 0.80 0.89 0.99 1.17 1.25
VII 0.96 1.05 1.15 1.33 1.47
VIII 1.10 1.20 1.29 1.48 1.67
IX 1.21 1.31 1.41 1.61 1.85
X 1.29 1.40 1.52 1.74 2.06
XI 1.42 1.54 1.67 1.91 2.19
Contrast (III-VIII) 0.47 0.51 0.54 0.61 0.71
Contrast (I-X) 0.44 0.48 0.52 0.59 0.72

 

Comparison Chart

 

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