HOWTO: Calibrating the distance of the A620 Richard Lemieux, 2007-05-24 The purpose of distance calibration is to get correct distance numbers from the camera software. The intent is to be able to compute distance related numbers such as the depth of field and the optimal stereo separation distance. The process of calibration returns parameter values that are used in a program that displays distance related numbers such as program rf_3.c . The A620 already provides a distance number.
FAQ Firmware versions in green are available in stable and/or dev for download Firmware versions in gray do not have official CHDK releases. Check porting status here For the development status of not-yet-supported cameras, see For Developers. It is likely that any Canon Powershot based on the DIGIC II, DIGIC III or DIGIC 4 platforms can be supported, although it is impossible to be sure until someone starts work on a particular model. If your camera model is not listed here then there is no CHDK for it at the present time !
ACID This is the English version of the ACID Download Page. There's a German version here and a Spanish version here. If you are interested in making other translated versions of ACID available, please see the ACID Internationalisation page.
This Instructable shows you how to make a pocket-sized CHDK USB remote for your Canon camera inside of an Altoids Smalls tin (the new kind with the hinged lid). I kept it pretty simple as far as the circuit goes. It's just batteries connected to a NO push button switch and a jack into which a modified USB cable is inserted. There are no resistors, capacitors, or voltage regulators. Pocket-Sized CHDK USB Camera Shutter Remote
Try it out
Samples: High-Speed Shutter & Flash-Sync Sample images of what can now be done with the ultra-high shutter speeds with high-speed flash sync. These images were taken with the new high-speed shutter override option. 1/10,000 second, Manual mode, f/3.5, flash manual at lowest output, +4 diopter close-up lens, subject distance approx. 10 inches (25cm), room lights and lights above sink all turned on.
You can use focus bracketing to increase the DOF (depth of field) of a photo. This is especially useful for macros, because often the DOF is so shallow that large parts of the picture will be blurred. Just load your pictures into CombineZM (freeware), click "Macro>Do Stack" and they will be combined into one photo with large depth of field. The following photos were combined into one image with a large DOF. As you can see there is a problem on the picture with the three Kinder Surpise figures: There is an unsharp halo around the ears of the mouse. Samples: Unlimited DOF
Benchmarks Here are some benchmark results for various SD card brands which were acquired with the new benchmark option of the CHDK. Maybe also see BenchmarkVideo60Sec. The higher is the value, the higher is the speed [kb/s], the faster is the memory card.
mbineZM News CombineZP the next member of the CombineZ series of programs is now available. Having trouble Downloading from here? There are copies of most files on the CombineZ Yahoo Group web site, try downloading from there. Please Note There are now Two versions of CombineZM. 1. the FULL version still called CombineZM, short form CZM. 2. the SMALL version called CombineZ-m, short form CZm.
CombineZM DOF stacking was not set properly, and/or too many/too few photos.What were your parameters in the focus settings, and how many shots did you combine? What I do with such macros is set the focus depth increment to 2mm, set it to "+" bracketing, set into continuous mode, set the focus lock at the closest I can, set EV lock, and fire away.I take many dozens of shots on the tripod.When I load them all, I clear out the ones at the beginning of the string of shots (usually none need to go) and any shots after the last good focused part of the object.From there, I may be left still with 3 dozen shots. I then delete the last two photos in every three shots.In other words, pictures numbered xx25, xx26, xx27, xx28, xx29, xx30, xx31, xx32, xx33, xx34, xx35, xx36, xx37,xx38,xx39,xx40...
CheatSheets A640 for HDR Bracketing Edit I've made this cheat sheet to help me remember all the ALT-shortcuts on the A640, and to teach my wife how to take HDR exposure-bracketed sequences. Hope that one or the other might find it as useful as I do. Feel free to modify it to your needs. Some of the text is camera and/or script file dependent.
FAQ Firmware versions in green are available in stable and/or dev for download Firmware versions in gray do not have official CHDK releases. Check porting status here For the development status of not-yet-supported cameras, see For Developers. It is likely that any Canon Powershot based on the DIGIC II, DIGIC III or DIGIC 4 platforms can be supported, although it is impossible to be sure until someone starts work on a particular model.
A guide to installing and using CHDK with your Mac. Manual vs. Auto booting Edit There are two possible ways to use the CHDK on the camera. FAQ/Mac
Since the discovery of many new override features, some far surpassing what the cameras were originally sold to do, it has been found that each make and model of camera may have variations in the absolute limits of Shutter-Speeds, F-Stops, ISO-Values, Motion-Detection Speed, among others. It might be interesting if people who have tested the limits of their particular cameras would provide what limits they found. This would also be a nice quick & dirty chart for anyone wanting to choose a CHDK-capable camera based on these new capabilities. CameraFeatures
CHDK for Dummies The Very First Steps Choosing a new camera Edit There are two segments in the digital camera market: people who just want to snap pictures, and professional photographers. Accordingly, many camera manufacturers have two "families" of product: Point And Shoot cameras (also called Digital Compact cameras) intended for consumers who want to take snaps.
Introduction Edit What is CHDK? CHDK firmware usage
UBASIC/Scripts: Focus Bracketing
UBASIC/Scripts: Universal motion detection
Gentles Limited: Camera Remote Control
The Gentled CHDK2
USB Remote Cable
CHDK in Brief