Kodak negative stock with extreme overexposure tolerance — recovers up to 7 stops of blown highlights. Essential for blown-out daylight and neon work.
The 870 handles overexposure like few other films — up to seven stops over, and the highlights still retain detail. This isn't just a technical specification, but a fundamental working philosophy you feel on set: you can expose more aggressively without fear of blown-out lights. This becomes especially valuable in backlight scenes outdoors or when you want to integrate neon signs into the composition without them becoming mere white blobs.
Practically, this means you no longer adhere to the classic three-point rule when metering exposure. You can boldly push the exposure up, especially if the scene has dark foreground elements you still want to see. The grain remains finer than with standard negative material — an advantage in daylight, where graininess often becomes a problem under pressure. In the edit, the 870 proves particularly grateful: the shadows don't crush to black, and the highlights can be pulled back without risking banding or posterization. This is the classic underexposure tolerance that defines the material.
Especially in the 1970s and 80s, the 870 was the standard tool for street photography and location shoots without controlled lighting. You pack it for shoots in natural light situations where contrast values fluctuate wildly — interiors with large windows, urban scenes with extreme backlight, or night shots under artificial light. The saturation in the mid-tones is full without appearing erratic. Some DoPs deliberately shoot it underexposed to minimize grain and achieve a creamier look — this is where the material's true flexibility shows. In the lab, you just need to ensure that pull processes aren't too aggressive, otherwise the contrast curve will flatten out.
Today, the 870 is finding renewed appreciation among enthusiasts who specifically work analog or combine film footage with digital elements in hybrid productions. The emotional image quality — slightly sepia, with that warm base tone in the mid-tones — is difficult to replicate digitally. Those who know it reach for it when authenticity and true tonal range are paramount.