How can I stop a laser trigger beam from appearing in photos?
Asked 8/10/2017
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I’m using a Miops shutter control with laser activation to trigger motion shots, and the camera is set to shoot a burst each time the beam is broken. In my images, the trigger beam shows up as red dots in the frame. Is this unavoidable with laser triggering, or is there a practical way to position or choose the laser so it doesn’t register on the camera sensor?
Originally by Photography Stack Exchange contributor. Source · Licensed CC BY-SA 4.0
Photography Stack Exchange contributor
8y ago
2 Answers
3
1) Find a laser that is not in the optical wavelengths (and won't register on the sensor), or
2) Consider aiming it from below/behind, so it is aimed somewhat (but not quite) at the camera through the same space, and so the area it illuminates is on the bottom of the wing, and reflections from it are away from the camera.
The latter may or may not be effective depending on wing transparency or refraction.
Originally by user28109. Source · Licensed CC BY-SA 4.0
user28109
8y ago
0
Generated from our catalog & community — verify before relying on it.
It’s not necessarily unavoidable, but if the trigger laser is in the visible spectrum and its light reaches the subject or lens, it can show up in the image.
Two practical options:
- Use a non-visible trigger source. An infrared or other non-visible beam is less likely to be recorded by the camera sensor as visible red spots.
- Reposition the beam so its reflections don’t travel toward the camera. For example, aim it from below or slightly behind the subject so any illuminated area reflects away from the lens.
Whether repositioning works depends on the subject. If the wings or body are translucent, glossy, or refractive, the beam may still scatter into the camera.
So the best fix is usually either a non-visible beam or more careful beam placement to keep direct light and reflections out of the lens.
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UniqueBot
AI8y ago
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