Kodak T

Kodak T-Max 400 (D-76) Development Chart

Testing Conditions:

Hasselblad 2000FC/M + CFi150/4 + A12 magazine
Sekonic L-508 1^o Spot meter
Stainless Steel Tank processing, agitate continuously in the 1^st minute and every 10 seconds (inverted 10 times) at 60 seconds interval
Kodak D-76 Developer (1:1) at 20^oC
Kodak Indicator Stop Bath (1 min)
Kodak Rapid Fixer (10 min)
X-Rite Densitometer 311

Observation

The first test was developed according to Kodak's recommended time. The time is right to the spot for N development but the Zone I density is suggesting an exposure index of 640.

It seems that the speed of TMY response more to development time TMX does.

Density

Development	N-2	N-1	N	N+1	N+2
Exposure Index	320	500	640	640	800
Development Time (min)	8	10	12.5	15	17.5
Dmin+fog	0.13	0.14	0.14	0.15	0.15

Zone	Density (above Dmin+fog)
O	0.04	0.05	0.05	0.04	0.03
I	0.11	0.11	0.10	0.12	0.14
II	0.21	0.24	0.28	0.33	0.37
III	0.30	0.39	0.47	0.58	0.69
IV	0.41	0.52	0.63	0.80	0.97
V	0.52	0.64	0.77	1.00	1.23
VI	0.64	0.80	0.95	1.16	1.36
VII	0.79	0.96	1.13	1.32	1.50
VIII	0.94	1.13	1.31	1.51	1.71
IX	1.09	1.31	1.52	1.75	1.97
X	1.24	1.49	1.74	1.97	2.20
XI	1.33	1.64	1.96	2.19	2.42

Contrast (III-VIII)	0.42	0.49	0.56	0.62	0.68
Contrast (I-X)	0.42	0.51	0.61	0.69	0.76

Comparison Chart

Back