KODAK TRI-X Pan Film has a unique tonal "signature," good sharpness, and distinctive grain, accompanied by a very forgiving nature with regards to exposure and superlative adaptability to processing variables. With its ISO of 400, it's good for extending flash distance range. It delivers medium contrast and is suitable for a moderate degree of enlargement. The 120 film can be retouched on the emulsion side. Use it for just about every situation.