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Canon PowerShot A640 comparison

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Product name	Canon PowerShot A640	Canon PowerShot A650 IS	Canon PowerShot SX120 IS	Canon PowerShot A630	Canon PowerShot S90
Price	$899.99	$744.95	$199.00 to $255.00	$399.00	$391.80 to $399.99
CNET editors' rating	3.5 stars Overall score: 7.6 (3.5 stars)	3.5 stars Overall score: 7.6 (3.5 stars)	3.5 stars Overall score: 7.0 (3.5 stars)	3.5 stars Overall score: 7.6 (3.5 stars)	4.0 stars Overall score: 8.0 (4.0 stars)
Average user rating	3.5 stars	4.0 stars	4.0 stars	3.5 stars	4.5 stars
Release date	September 15, 2006		August 19, 2009	September 15, 2006
The Bottom Line	It's not great in low light, but the A640 has plenty of features photographers will love.	Performance issues aside, the Canon PowerShot A650 IS combines large, good-looking photos and a generous feature set into a fine midrange shooter.	Canon's SX120 IS pocket megazoom falls behind the competition in every aspect except photo quality.	Though it's not a great choice for low-light shooting, the Canon PowerShot A630 is a solid, feature-rich digital camera.	As long as you're not expecting dSLR speed in a tiny body, the Canon PowerShot S90 is an excellent compact camera for advanced amateurs.
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Lens aperture	F/2.8-4.1	F/2.8-4.8	F/2.8-4.3	F/2.8-4.1	F/2.0-4.9
Equivalent 35mm focal length	35 - 140 mm	35 - 210 mm	36 - 360 mm	35 - 140 mm	28 - 105 mm
Optical zoom	4 x	6 x	10 x	4 x	3.8 x
Light sensitivity	ISO 80 ISO 100 ISO 200 ISO 400 ISO 800 ISO auto	ISO 80 ISO 100 ISO 200 ISO 400 ISO 800 ISO 1600 ISO 3200	ISO 80 ISO 100 ISO 200 ISO 400 ISO 800 ISO 1600 ISO auto ISO 3200 (2Mpix)	ISO 80 ISO 100 ISO 200 ISO 400 ISO 800 ISO auto	ISO 80 ISO 100 ISO 125 ISO 160 ISO 200 ISO 250 ISO 320 ISO 400 ISO 500 ISO 640 ISO 800 ISO 1000 ISO 1250 ISO 1600 ISO 2000 ISO 2500 ISO 3200 ISO auto
Display (projector) technology	TFT active matrix	Low Temperature Poly-Silicon (LTPS)	TFT active matrix	TFT active matrix	TFT active matrix
Memory storage capacity	32 MB	32 MB	128 KB	16 MB	Info unavailable
Video input type	Digital camera	Digital camera	Digital camera	Digital camera	Digital camera
Flash memory form factor	MultiMediaCard	SD Memory Card	SD Memory Card	SD Memory Card	Info unavailable
Digital zoom	4 x	4 x	4 x	4 x	4 x
Weight	8.6 oz	10.6 oz	8.6 oz	8.6 oz	6.2 oz
Effective sensor resolution	10,000,000 pixels	12,100,000 pixels	10,000,000 pixels	8,000,000 pixels	10,000,000 pixels
Still image format	JPEG	JPEG	JPEG	JPEG	RAW JPEG RAW + JPEG
Display (projector) diagonal size	2.5 in	2.5 in	3 in	2.5 in	3 in
Manual focus	Manual Automatic	Manual Automatic	Manual Automatic	Manual Automatic	Manual Automatic
Full specifications	Full specifications	Full specifications	Full specifications	Full specifications	Full specifications
Buying choices	Amazon.com Marketplace $899.99 In stock: Yes Price from 1 CNET Certified store	Amazon.com Marketplace $744.95 In stock: Yes Price from 1 CNET Certified store	Buydig.com $199.00 In stock: Yes Lenovo $255.00 In stock: Yes B&H Photo-Video $199.95 In stock: Yes Prices from 15 CNET Certified stores	Amazon.com Marketplace $399.00 In stock: Yes Price from 1 CNET Certified store	Buydig.com $399.00 In stock: Yes B&H Photo-Video $399.95 In stock: Yes Amazon.com $399.00 In stock: Yes Prices from 14 CNET Certified stores
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