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hardware:canon-sd1000 [2008/06/29 09:24] cyril |
hardware:canon-sd1000 [2013/09/19 16:40] |
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- | ====== Canon SD1000 / Ixus70 ====== | ||
- | **Digital camera** Canon PowerShot SD1000 (USA), Canon PowerShot Ixus70 (Europe) | ||
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- | ===== Features ===== | ||
- | |||
- | * Video timelapse (1s or 2s interval) | ||
- | * Macro mode from 3cm | ||
- | * Shutter speed down to 15s | ||
- | * Optical view-finder which follows zoom (in case you break you LCD screen :-p) | ||
- | * One button video recording (a special button can be mapped to) | ||
- | * Stitch assist | ||
- | |||
- | Lacking features: | ||
- | * Efficient video compression algorithm... | ||
- | * Image stabilization | ||
- | |||
- | ===== Assessment ===== | ||
- | |||
- | * Pretty good usability | ||
- | * Sensibility: | ||
- | * Distorsion: pretty low (really better than Casio S600) | ||
- | * Optics: | ||
- | |||
- | ===== With Linux ===== | ||
- | |||
- | Canon doesn' | ||
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- | However you can still use it with Linux, using the PTP protocol, for example with GPhoto2. Make sure you enable drivers for Canon cameras and PTP2 protocol (with Gentoo, add ' | ||
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- | Unfortunately I didn't manage to upload files with this method (error with gphoto2/ | ||
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- | ===== CHDK Firmware ===== | ||
- | |||
- | I discovered right after buying my camera a WONDERFUL thing: Canon cameras can dynamically load a firmware add-on which is on the SD-card, that can enhance the possibilities of the camera firmware ! And there is of course an open-source one: [[http:// | ||
- | * Save RAW | ||
- | * Grid enhancements | ||
- | * Histogram enhancements | ||
- | * Zebra mode (draw under and over exposed regions) | ||
- | * DOF calculator (Depth Of Field) (to do focus bracketting) | ||
- | * Extra shutter speeds (1/10000s to 65s, instead of 1/1500s to 15s) | ||
- | * Extra sensitivity values (60 to 6400 instead of 80 to 1600) | ||
- | * Motion detection ! (to shot lightning, water drops, ...) | ||
- | * Tunable video compression rates | ||
- | * Optical zoom unlocked during movie shoting | ||
- | * Manual focus | ||
- | * USB remote control | ||
- | * File browser, calendar, text editor, games... | ||
- | |||
- | And the most beautiful, **script execution** ! A lot of them are already [[http:// | ||
- | * Exposure bracketing (to do High Dynamic Range imaging: [[http:// | ||
- | * Focus bracketing (to do Focus Stacking: [[http:// | ||
- | * [[http:// | ||
- | * [[http:// | ||
- | * ... so much more | ||
- | |||
- | ====Useful links for CHDK==== | ||
- | Official websites: | ||
- | * [[http:// | ||
- | * [[http:// | ||
- | * [[http:// | ||
- | |||
- | CHDK usage: | ||
- | * [[http:// | ||
- | * [[http:// | ||
- | * [[http:// | ||
- | * [[http:// | ||
- | |||
- | Downloads: | ||
- | * [[http:// | ||
- | * [[http:// | ||
- | * [[http:// | ||
- | * [[http:// | ||
- | |||
- | Features: | ||
- | * [[http:// | ||
- | * [[http:// | ||
- | * [[http:// | ||
- | |||
- | Development: | ||
- | * [[http:// | ||
- | * [[http:// | ||
- | * [[http:// | ||
- | |||
- | |||
- | ===== Benchmark ===== | ||
- | |||
- | With SDCard SanDisk Ultra III (120X, 18MB/s): | ||
- | * Write (RAW): 19572 KB/s | ||
- | * Write (Mem): 19819 KB/s | ||
- | * Write (64k): 10369 KB/s | ||
- | * Read (64k): | ||
- | |||
- | ==== Speed ==== | ||
- | === Continuous mode === | ||
- | * JPG (~1.8MB): 0.65s | ||
- | * JPG+RAW (~1.8MB + 8.8MB): 1.09s | ||
- | |||
- | So the overhead due to RAW recording corresponds exactly to the SDCard write speed: 8.8MB / 0.44s = 20MB/s. JPG recording is responsible for 0.09s at that write speed and image quality. Then it is easy to evaluate the consequences of a slower SDCard (9MB/s for a classic fast card such as SanDisk Extreme II, down to 1.5MB/s for the cheapest cards). | ||
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- | RAW shooting would be faster if not processing/ | ||