Polaroid · ISO 640 Color negative
Polaroid Spectra Color
Polaroid launched the Spectra system in 1986 with a new rectangular print format that ran 9.2 by 7.3 centimeters instead of the square 600. The wider frame matched how most photographers actually compose, and the cameras were built better than the consumer 600 line. The Spectra Pro, released in 1990, paired a glass 125mm f/10 Quintic three-element lens with sonar autofocus and manual override. Different bodies shipped through 2004, including the translucent Onyx and the medical Macro 5 SLR with five preset magnifications.
The film is rated ISO 640 and develops face-up in 10 to 15 minutes. Chemistry is otherwise the same family as 600. When the original Polaroid Corporation collapsed in 2008, Spectra packs stopped coming off the line. The Impossible Project picked up production around 2010 with a different emulsion, and after the rebrand to Polaroid Originals in 2017 the formula kept moving toward something usable: contrast tightened, the cold cast warmed up, and shelf life stopped being a guessing game.
Color rendering on the late Polaroid Originals Spectra packs is honest in a particular way. The palette leans cool compared with current i-Type, with restrained saturation and a softness in the highlights that reads as the integral-film signature rather than a defect. Skin tones come through warmer than the surroundings, which is most of what people want from this kind of camera.
Polaroid Originals discontinued the format in October 2019 after a six-month engineering push could not stop the Spectra cameras from jamming on ejection. The mechanics in surviving bodies were aging out faster than the film could be reformulated to accommodate them. No one currently produces Spectra film.
Reciprocity exponent is 1.0, convenient because Spectra cameras have no manual long-exposure control on most models. Zone Light Meter applies its correction past one second; with this film, that correction is zero. If you are firing a Spectra Pro on a tripod with the time setting, the metered second is the second at the print.
How the app handles this stock
- Box speed: ISO 640. Picker exposes pull/push chips so you can shoot it at any speed you want and the meter follows.
- Reciprocity: No reciprocity correction needed; metered time is the shot time.
- 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.