C41
Kodak Portra 400
Kodak Portra 400 is a professional C-41 color negative film known for flexible exposure latitude, natural skin tones, and fine grain.
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The Olympus OM-77AF (1986, sold as the **OM-707** in Europe and some other markets) is Olympus's first autofocus 35mm SLR. It uses a **dedicated OM-AF lens system** - motorised lenses that carry the AF drive motor in the lens barrel rather than the body - and offers program, aperture-priority, shutter-priority, and manual exposure modes. The body continued to accept all existing manual-focus Zuiko OM lenses, though autofocus required the specific OM-AF lenses.
Reference
Recommended film stocks for the 35mm format your camera takes.
C41
Kodak Portra 400 is a professional C-41 color negative film known for flexible exposure latitude, natural skin tones, and fine grain.
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Kodak Tri-X 400 is a classic black-and-white film known for strong tonality, visible grain, and documentary character.
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Kodak Gold 200 is a daylight-balanced C-41 color negative film with warm color, moderate grain, and a classic consumer-film look.
Develop 35mm film
Labs in our directory that process 35mm film.
Before you buy used
About this camera
Olympus's first autofocus SLR - AF via dedicated OM-AF lenses, sold as the OM-707 in Europe.
| Field | Value |
|---|
| Format | 35mm |
| Mount | Olympus OM (with AF extension) |
| Years | 1986-~1991 |
| Shutter | 30s - 1/2000s, electronic horizontal cloth |
| Flash sync | ~1/100s |
| Meter | TTL SPD evaluative |
| Modes | Program, aperture-priority, shutter-priority, manual |
| Focus | Autofocus (OM-AF lenses) / manual (all OM lenses) |
| Battery | ~4x AAA |
| Price used | ~$50-130 |
By 1985 Minolta had demonstrated with the Maxxum 7000 that phase-detection AF in an SLR body was viable and commercially successful. Olympus, committed to the OM manual-focus system since 1972, faced a difficult transition. The OM-77AF was the answer: rather than redesign the OM mount entirely, Olympus extended it with a communication protocol for motorised lenses.
The body accepted the existing Zuiko OM lens library in manual-focus mode and added AF capability only when used with OM-AF designation lenses. This preserved backward compatibility but meant users wanting autofocus had to invest in a second, smaller lens system. The strategy did not succeed commercially: the OM-AF lens range remained limited, and competitors with body-motor systems (Canon EOS, Nikon AF) offered wider lens selections.
The camera was sold as the OM-707 in Europe - a marketing decision consistent with Olympus's pattern of regional naming in the OM consumer line (OM-40/OM-PC, OM-F/OM-30). Production ran approximately until 1991, after which Olympus wound down the OM SLR system as a whole.
The OM-77AF is historically significant as Olympus's only autofocus OM SLR. It represents the end of Olympus's commitment to the OM system design language - a body that tried to extend the manual-focus system into the AF era rather than start over. Canon and Nikon chose the clean-break approach (EOS, F-mount AF); Olympus did not, and the OM system wound down as a result.
For contemporary buyers the OM-77AF is primarily a curiosity. It accepts the full Zuiko manual-focus system at low body cost. The OM-AF lenses are uncommon and the AF system itself is slow by later standards. Its value is as a piece of the OM system's history, not as a practical autofocus tool.
Two lens families are relevant:
The OM-77AF used the dedicated T-series TTL flash system. The T-32 and T-20 are compatible in manual-flash mode; dedicated AF-era flash units may provide additional modes.
BW
Ilford HP5 Plus is a flexible ISO 400 black-and-white film with classic grain and strong push-processing tolerance.
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Kodak Ektar 100 is a fine-grain C-41 color negative film with saturated color and high sharpness.
View profile →Olympus OM-77AF
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