Kodak · ISO 100 Color negative
Kodak ProImage 100
ProImage 100 was formulated for markets where film sits on unrefrigerated shelves in warm climates for months before being sold. Heat accelerates emulsion aging and color drift, and most consumer stocks start to shift in ways that produce inconsistent results. Kodak designed ProImage 100 with a more stable base and thermal tolerance built in, which is why it became the standard professional print stock across South and Southeast Asia before it was available in Western markets at all.
The color response leans warm, particularly in skin. Under tropical daylight, faces read rich rather than bleached. Saturation is moderate to high; this is not a neutral or pastel stock. Compared to Portra 160, ProImage is more saturated, warmer, and less precise about shadow separation. Compared to Gold 200, it is slightly more controlled and has better shadow rendering. It occupies a middle position that works particularly well for outdoor wedding and event coverage where the light is bright and warm and the subjects are people.
The grain for an ISO 100 stock is slightly coarser than Portra 160 or T-MAX 100, but it is regular and pleasant. This is not a large-format stock. It is a 35mm and 120 stock designed for people shooting events, travel, and portraits in daylight without studio equipment.
Available in 35mm and 120. Global distribution has expanded since roughly 2019, though it can still be harder to find in the United States and Europe than in Asia-Pacific markets.
Zone Light Meter applies a reciprocity exponent of 1.10 past one second. For a stock designed for bright-light outdoor work, long exposures are rarely the use case, but if you are doing dusk or interior available-light work with it, the correction is there.
How the app handles this stock
- Box speed: ISO 100. Picker exposes pull/push chips so you can shoot it at any speed you want and the meter follows.
- Reciprocity: Above one second the app raises metered time to the power of 1.10.
- Expired film: if you load an old roll, set the expiry year and storage in the app and the ISO scales for you. Color negative decay rates are baked in.
Frequently asked questions
What ISO is Kodak ProImage 100?
Kodak ProImage 100 is an ISO 100 color negative film from Kodak. You can rate it at box speed or push and pull it; set the speed you actually shot and the meter follows.
Is Kodak ProImage 100 still in production?
Yes. Kodak ProImage 100 is a current film you can still buy new.
Does Kodak ProImage 100 suffer from reciprocity failure?
Yes, on exposures longer than about one second. Its reciprocity exponent is 1.10, so a metered 10 seconds becomes about 13 seconds. Zone Light Meter applies this automatically.