[st1000]

唔知有冇回帶, 但測試成功!

from: http://photography-on-the.net/forum/showthread.php?t=742806

THIS IS UNBELIEVABLY AWESOME!

Guys at CHDK made it again! (Thanks thaibv and foldsea @ CHDK!!!)

A firmware hack for Rebel XTi / 400D that enables additional features such
as ISO 3200 (and other ISOs in between like 500, 640, 120, 1250 etc) and
SPOT METERING (yes! spot metering!) has been released and it works pretty
darn well!

For more information and the required files, please refer to:
http://chdk.setepontos.com/index.php...,3290.135.html

Use testfir.fir to make your 400d bootable from CF and then make your CF
card bootable using cardtricks. (choose CF boot sector option) Copy the hack
file (autorun.bin) into the CF.

Once all is done correctly, insert the CF and turn the camera on. The print
button will light up (blue) momentarily to show that the hack has been
loaded.

To change ISO, go to ISO menu to choose baseline ISO and then push the print
button several times to switch to other ISOs. (ISO number in the screen will
change accordingly)

100 - 100 / 125 / 160 / 80
200 - 200 / 250 / 320
400 - 400 / 500 / 640
800 - 800 / 1000 / 1250
1600 - 1600 / 2000 / 2500 / 3200

To use spot metering go to metering menu, and then push print button. Camera
will beep and spot metering will be enabled.

To start the camera without the hack, insert other non-hacked CFs or just
format the CF.

--------DETAILED HOWTO--------

1. use a fully charged battery. you need CF card reader and windows. on a
mac, use windows under bootcamp/vmware fusion.

2. update to latest firmware (1.1.1) by downloading the latest firmware,
copying it into the root of CF, and running "update firmware" in the setup
menu.

3. empty your CF, download testfir.fir from
http://chdk.setepontos.com/index.php/topic,1618.0.html and copy it into the
root of your CF.

4. insert CF, and then run firmware update again using testfir.fir the
screen will go blank. wait 5 minutes, turn off, take battery out and back
in.

5. insert CF into card reader and perform a quick format.

6. --------------- UPDATED INSTRUCTIONS FOR BOTH < 4GB (fat16) AND > 4GB
(fat32) CARDS: ----------------------------

download cardtricks 1.45 :
http://chdk.setepontos.com/index.php/topic,4214.0.html (first download
link). Run it to self extract the archive. Run the binary extracted, choose
CF drive, tick "cf boot sector" and then click "make bootable."

7. download latest autoexec.bin from here:
http://code.google.com/p/400d/downloads/list rename it to autoexec.bin then
copy the file to CF card.

8. safely remove CF, insert it into camera, if the blue print led of the
camera briefly lights up when the camera is turned on, the hack is
successfully loaded.

9. to use additional ISO values, choose one of the 100,200,400,800,1600, and
then push the print button to access more ISOs.
(80/100/125/160/200/250/320/400/500/640/800/1000/1250/ 1600/2000/2500/3200)

ISO levels 16/32/40/50 can also be enabled if you go to menu and turn "shoot
without CF" ON, but not sure if they really work (i see no difference.)

10. to use spot metering, go to metering selection screen, then push the
print button. to go back to "evaluative metering", you have to select other
metering modes first, and then back to "evaluative metering", because the
camera thinks you are at "evaluative" although you are at "spot metering".

11. to view shutter actuation count, which was only viewable by canon
themselves, go to menu, push print button, push menu button again twice,
("factory menu" appears), enter factory menu, then push print button to
enter "debug mode". after a beep, go back and set spot metering. and you
will see the camera writing something to the CF (CF light). eject CF, insert
it into card reader, you will see a file called STDOUT.txt, search the
textfile for "Release". there you see a number and that is the shutter
count.

thanks very much thaibv and Foldesa of CHDK for this wonderful hack.

- raingrove

[orabuln]

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