CHDK Motion Detection

[Kociałko]

doczytałem się trochę o nowej komendzie "get_usb_power" :

"The "get_usb_power" uBASIC command was implemented due to some requests to find
a way to read the USB port so that 3-5vdc voltage applied to the USB cable could
be read as a data stream, allowing you to send rudimentary morse-codelike
sequences of power to that port. Thus enabling you to trigger different features
on your camera or activating defined subroutines in scripts by these "digitally"
signed events. Since script commands/code-lines cannot be executed faster than
10ms each, think slow-slow-slow serial data. Coupled to the right hardware (or a
well timed morse-code-key finger) this does allow you to perform things like
zoom your lens, or any other of the many dozens of manual camera controls, all
by USB remote control. Provided your script is designed to interpret the voltage
pulses and then execute them properly. Simple tests for duration might suffice
in most instances. Long press = zoom out 10 steps, short press = zoom in 10
steps. 2 short presses = trip shutter, etc."

wychodzi na to,że ta komenda pozwala odczytać status zasilania z usb
możemy więc napisać skrypt ,który zliczy nam ile razy włączymy i wyłączymy zasilanie na usb i sterować aparatem i jego różnymi funkcjami
np. długo podajemy napięcie na usb=działa nam zoom 10 kroków w przód
krótko trzymamy=zoom wraca 10 kroków
2 razy podajemy napięcie na usb=przełączamy czas migawki...itd...
!!! Łączenie podwójnego wpisu !!!
a co do redukcji szumów NOISE REDUCTION-dziwne ale na wielu forach pisze ,że jeśli ustawisz to na OFF szumy są MNIEJSZE
"This feature also works with or without dark-frame-subtraction noise reduction
too, if using the Noise Reduction options of Auto, Off, On. (in the RAW menu
options) Surprisingly, on many cameras people are finding that there's actually
LESS noise in all shutter speeds when NR is turned to OFF. Many are now using
this setting permanently. They suspect it might be the way the Digic II and III
processors are handling it in darker regions and longer exposures (less than
1/100th or so, and higher ISOs). YMMV, you'll have to test this to see if it
holds true for your camera."