More info about the Canon PowerShot A640 Digital Camera (10.0MP 4x optical zoom)
I have used a Nikon Coolpix 990 for my work for the last 7 years but wanted something a little smaller/lighter. I chose the A640 as a replacement because it is smaller/lighter than the 990 but still uses AA batteries making it easy to get replacements in an emergency. It also has a flip-out LCD screen which allows me to get the camera into all sorts of angles - just like the 990 with its twist screen. I think I would have picked a Nikon again if the current alternative to the 990 had better shot-to-shot delay when using a flash - but it doesn t.
Good points. Smaller and lighter than the 990. Very quick to start up. The A640 has a mini-USB link so that getting pictures off the camera is easy. The manual setting is easy to use and is probably the best feature of the camera allowing you to get the best out of it. The flip-out LCD screen makes it easy to get the camera into all sorts of awkward angles. There is little if any shutter lag. Shot-to-shot delay is minimal even using the flash. Battery life is excellent even using the flash and the LCD continuously. ISO down to 800 means that taking pictures in low-light with or without the flash is a doddle.
Bad points. The images are a little more red/yellow compared with the Nikon. Getting the settings right to take pictures in Auto or Manual is more fiddly compared with the 990. Bottom line is that image quality is similar to the Nikon 990 but you have to work much harder to get that quality with the A640. Therefore probably not much good as a camera to take holiday snaps but a good compromise for me to replace the 990.
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