CineStill is more sensitive (and thus susceptible to light leaks and static discharge) than most other films, so care should be taken when handling.
Static discharge can expose the film as blue or red marks on the film, and is caused by advancing or rewinding the film at too great a speed, especially in cool dry environments.
Light leaks, which may not show up on other films, may show up on CineStill due to its extra sensitivity to low light and what is called "light piping," where light can travel through the acetate causing light leaks inside or outside of the camera. Be sure your camera's light seals are in good condition and if you have a film check window on the back door of your camera it would be a safe idea to tape it off. The key to avoiding light leaks outside of the camera is first to "load in subdued light" as directed on the packaging and second to keep the rolls in their black plastic canisters before and after shooting whenever possible.
It is also important to note that since CineStill is based off of sensitive motion-picture emulsion, environmental conditions can play a part in prematurely aging your film. Please take care when shooting in areas of extreme cold, heat, moisture, and dryness. For best results, we strongly recommend: cold-storing your film, shooting your film well before listed expiration and within 6 months of purchase, and processing your film promptly after use. Do not use if expired. Fresh film is best!
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