Anyone that's familiar with that rule-of-thumb for hand-held shots knows that
1/fl = 1/35mm eq. fl for suggested shutter-speed. Though with IS, in the right
hands, that should be more like 5 to 7 / 35mm eq. f.l. Some people have no
problems hand-holding their IS equipped cameras for 1 full second at 432mm and
getting a crystal clear photo, making that rule-of-thumb totally obsolete.

But wait, that's right, you're not familiar with all the features of CHDK where
it displays the camera's exact f.l., the ultrasonic-motor zoom-steps (0 to 128
steps), or the 35mm eq. f.l. in the viewfinder of whatever zoom setting you are
using. In the case of the S-series cameras that entails 129 discreet
focal-length steps of 36-432 mm (35mm eq.) This too is something that no DSLR on
earth can ever do -- recreate the exact focal-length used with any zoom lens.
So, if you want to reproduce a tele-macro setup using an exact lens focal-length
set to 210mm (35mm eq.) one only needs to include the command "set_zoom 79". (79
being one of 129 discreet ultrasonic-motor steps.)

Do you need to recreate the EXACT manual focus setting on your camera from one
day, week, or month to the next? No problem, use the "set_focus x" command,
setting an effective focus in mm (yes, millimeter) increments out to a distance
over 67 meters away. Lets see anyone do that with any DSLR, or any other cameras
for that matter.

I guess you don't miss what you don't have, so rather than make you realize just
how featureless every DSLR is compared to any CHDK P&S camera I won't mention
any more of its capabilities that beat the pants off of every DSLR ever made.

If someone gave me a choice between a CHDK capable camera and a Canon EOS-1Ds
Mark III (an $8000 body) for free I'd still choose the CHDK P&S, without a
moment's hesitation. Because the CHDK camera can do much more than the Mark III
will ever be able to do. I found it so funny, they thought they were doing great
things in the Mark III by including 6 different cropping frame formats for
composition. CHDK allows an unlimited number of cropping and composition frames
by using very simple graphic commands in a small file that you can load and
change any time on-the-fly. Custom cropping and composition masks any time you
need a new one.

http://scratchpad.wikia.com/wiki/CHDK/Grids

I bet every new Mark III owner will go "oooooo" and "ahhhh" over their 6
pathetic cropping formats because they don't realize just how lame that meager
selection is. They have no idea how much they are being ripped-off.

Awww, what the heck. I know that you and every other DSLR owner is just dying to
realize that your DSLR is highly inferior to some P&S cameras and it really was
a waste of your money after all. So here's all the simple scripting commands
available to every CHDK P&S owner to give them complete programmed control over
all of their camera's features

http://scratchpad.wikia.com/wiki/CHDK/uBASIC/TutorialScratchpad

(Read it and weep.)

Yes, a rail setup is the optimal situation, but in real-world use the times
where you have the chance to set up for the shot like that will be limited or
for in studio use only. Great for the lab in canned situations with inanimate
subjects with artificial lighting for documentation purposes, non-realistic for
on-the-go photographers in the real world with real subjects.

By the way, while you are calculating your rail increments, don't take too long
trying to find out how many hyperfocal in-focus planes that the f/stop you are
using will require to cover the full depth of your subject. You might be at it a
while by using a logarithmic progression to try to find those focusing-rail
stops for each frame. While you're busy trying to figure that all out I'll just
press 2 buttons on my P&S CHDK camera, if you don't mind.