Why is the 750 more expensive? Not everyone's an engineer; price is based on style and ergonomics. The 750 has a larger display, a new "touch sensitive" input dial, and looks cooler.
The SD700 and 800 models have digital image stabilization (DIS). This is not optical image stabilization (OIS). OIS is more expensive and uses a special adaptive lense. DIS removes blur by shifting the digital image. Neither the 1000 nor the 750 have any kind of IS. Perhaps Canon felt this wasn't necessary with the new way that they increase ISO in low light; this is another way of reducing blurred images by effectively increasing shutter speed.
The SD800 and 900 have the same ISO range as the new models (to 1600), while the SD700 only goes to ISO800. It seems that the new models make it simpler to select a higher ISO.
Also significant: The SD800 has a wider angle lens (28mm effective) than either the 750 or the 1000. Many find this more useful than a longer telephoto. The SD700 has a longer telephoto (140mm equivalent) but standard 35mm wide angle. Canon wisely decided that the 10 megapixel optics of the SD900 were not needed in a camera of this form factor as other factors limit the image quality and the extra pixels only add cost.
My ideal camera in this range: They almost got it in the 1000. Smallest size is good, but would have liked the OIS (wife can't hold the camera still) and wide angle of the SD800. Is there an SD1800 on the way????
should have added that any of these cameras blow away the competition in this range. Others may have more features, or more megapixels, but don't match the image quality of these Canon gems. If Canon added just a couple of manual controls (shutter, aperature), they would be unbeatable.
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Lots of incorrect information in this thread. For accurate and complete information, try http://www.dpreview.com/news/0702/07022202canonsd750sd1000.asp
They also do a good job providing subjective comments and reviews.
Why is the 750 more expensive? Not everyone's an engineer; price is based on style and ergonomics. The 750 has a larger display, a new "touch sensitive" input dial, and looks cooler.
The SD700 and 800 models have digital image stabilization (DIS). This is not optical image stabilization (OIS). OIS is more expensive and uses a special adaptive lense. DIS removes blur by shifting the digital image. Neither the 1000 nor the 750 have any kind of IS. Perhaps Canon felt this wasn't necessary with the new way that they increase ISO in low light; this is another way of reducing blurred images by effectively increasing shutter speed.
The SD800 and 900 have the same ISO range as the new models (to 1600), while the SD700 only goes to ISO800. It seems that the new models make it simpler to select a higher ISO.
Also significant: The SD800 has a wider angle lens (28mm effective) than either the 750 or the 1000. Many find this more useful than a longer telephoto. The SD700 has a longer telephoto (140mm equivalent) but standard 35mm wide angle. Canon wisely decided that the 10 megapixel optics of the SD900 were not needed in a camera of this form factor as other factors limit the image quality and the extra pixels only add cost.
My ideal camera in this range: They almost got it in the 1000. Smallest size is good, but would have liked the OIS (wife can't hold the camera still) and wide angle of the SD800. Is there an SD1800 on the way????
should have added that any of these cameras blow away the competition in this range. Others may have more features, or more megapixels, but don't match the image quality of these Canon gems. If Canon added just a couple of manual controls (shutter, aperature), they would be unbeatable.