Users of Powershot G3 and 420EX or 550EX

Started Feb 19, 2003 | Discussions thread
Bill Richardson Veteran Member • Posts: 3,922
Re: please clarify

Paul Turton wrote:


After double-checking, the AF light on the G2 does not emit any IR.
Using an IR transistor as a detector in a bread-boarded circuit and
a Wratten 87C IR filter on my G3, both tests showed no IR.

Unless an external light source is used the AF lamp in the Gx is
all there is.

I've been experimenting with a circuit that will activate an
external light during the AF pulse on my G3. Preliminary tests show
that it may work up to 40 feet in total darkness.


-- hide signature --

Thanks Paul, you are way ahead of me on the technology. Keep us advised of you findings!
Bill R
Canon G3 and PS7

Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark MMy threads
Color scheme? Blue / Yellow