How much light does CNTL flash "spill" into scene?

Started Jan 10, 2013 | Discussions thread
Shop cameras & lenses ▾
Allan Olesen Senior Member • Posts: 3,358
Re: sybersitizen is right (again) — the ANSWER

William Porter wrote:


One last question: Why do people keep talking about using a piece of film to cover the triggering flash?

Will

Because it blocks visible light but allows IR light to pass through.

Quoting from my other post:

It is strange that Sony doesn't sell an IR pass through filter for the controller flashes. As I have understood it, such a filter solves the problem completely since the flash emits plenty of IR light, the sensor on the flash reacts to IR light, and the camera's image sensor is immune to IR light because of a built in filter. Instead, people have to mess with exposed film in front of the controller flash.

Post (hide subjects) Posted by
tom
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark MMy threads
Color scheme? Blue / Yellow