Kodak has improved on an already good product. They have maintained T-Max 400 Professional Film as a continuous-tone panchromatic black-and-white negative film but "bumped up" the caliber of the grain as well as enhanced the sharpness.
This film is also useful for scientific and biomedical work, especially when fluorescence photography is required. It has high speed (ISO 400/27 in most developers), very high sharpness, extremely fine grain, and high resolving power; it allows a high degree of enlargement.
Note: Visually, you can differentiate "new" TMAX-400 from "old" TMAX-400 by the newer style packaging
Improvements in T-Max 400
- Kodak has incorporated a UV barrier into the new 35mm films to prevent inadvertent backside static exposure
- Some slight adjustments in development time required
- New packaging
- The backside of the film is darker, and more blue/black when viewed prior to processing
- Kodak T-Grain Emulsion
- Allows films with extremely fine grain to be made faster; high-speed films have finer grain; T-MAX Professional Films offer the best of both worlds: high speed and fine grain
- Improved sharpness
- Maintains subject detail in prints at higher degrees of magnification than conventional films
- Expanded exposure latitude
- Greater "forgiveness" with overexposure errors; quality prints from moderately under- or overexposed negatives; better highlight separation
- Improved reciprocity at long and short exposure times
- Less compensation required than with conventional films