Hard to say.
The P73 has a slightly higher price but it has one more megapixel.
Both take excellent photos.
The A75 has a shutter priority and aperture priority , program, and Manual modes.
The P73 has Manual mode only.
If I was interested in having the manual controls, I would take the A75.
If I was not interested in the manual controls, I would take the P73.
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The A75 is in short supply because it has been replaced with the Canon A510. The A510 is selling for the same price as the A75 (about $199). The A510 has a 4X optical zoom.
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Which camera is a better buy?

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