Brand: BOLEX
Category: Camera
Document Type: Manual
Language: EN
Available Languages: EN , ES
Manual for H8 REX
Uploaded: Aug. 10, 2025, 12:37 a.m.
Warranty Information
No warranty information is provided in this manual.
Winding the motor: Engage the motor by moving the disengaging lever to MOT and the side release to STOP. Raise and turn the winding handle until it engages. Wind fully counter-clockwise and secure the handle.
Filming speeds: Use the speed control dial to select 12, 16, 18, 24, 32, 48, or 64 frames per second. 18 fps is the standard for smoother reproduction.
Normal shots: Press the front release or push the side release to M.
Single frame shots: Push the side release to P. Use lever position I for instantaneous or T for time shots.
Selfilming: Push the side release to M. The camera runs as long as the motor is wound.
Hand cranking: Disengage the motor (lever to O). Insert hand crank and turn for rewinding. Return motor by setting lever to MOT.
Loading film: Remove lid, ensure pressure pad is secure, remove empty spool. Open film retaining arms, place spool with unexposed film, ensure correct film path. Insert film leader into film knife.
Troubleshooting and error codes
| FAULT | POSSIBLE CAUSE | DESCRIPTION |
|---|---|---|
| Film all black | Variable shutter was closed. | |
| Under-exposed film, inverted frames, strong orange tint | Film has been wrongly loaded, with the dark side of the film towards the lens. | |
| Frames too dark, without life | Under-exposed (diaphragm closed down too far with regard to the filming speed and the opening of the variable shutter). | |
| Washed out frames | Over-exposed (diaphragm open too wide with regard to the filming speed and the opening of the variable shutter). | |
| Blurred frames | Inaccurate distance setting. | |
| "Jumping" frames | Camera unsteady while filming. Pan shot made too quickly. | |
| Unnatural coloring | Using filters for black-and-white film with color film. Films developed long after exposure. Films badly stored before use. | |
| Dominant red-orange tint | Sequence shot too early in the morning or too late in the evening. Using tungsten lamps with a "daylight" film, or using a lamp not receiving enough current with an "artificial light" film. | |
| Dominant blue tint | Filming distant subjects at high altitudes or on water without the necessary filter. | |
| Partly obscured frames | An object in front of the taking lens, possibly a long tele lens or finger. Turret improperly positioned. | |
| Parallel scratches on the edge of the film | Dust or emulsion particles in the filmgate of the camera. | |
| Fogged film | Direct light entered the camera through the reflex viewfinder. | |
| Film fogged at the edges | Film insufficiently protected during the loading or unloading of the camera - the film was accidentally exposed to direct light. |