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I've been reviewing hardware and software, devising testing methodology and handed out buying advice for what seems like forever; I'm currently absorbed by computers and gaming hardware, but previously spent many years concentrating on cameras. I've also volunteered with a cat rescue for over 15 years doing adoptions, designing marketing materials, managing volunteers and, of course, photographing cats.
The G7 can focus as close as 0.4 inch, as long as you're zoomed out all the way. Although the shots have a little bit of that crunchy digital feel, they're still quite sharp.
I don't remember if I shot this at a high ISO speed--Canon frustratingly fails to include that spec in the JPEG file's EXIF information--or if it's the long zoom that does it, but many photos have that smeary paint effect. Though they printed OK at 11x15, the images look a little soft because of the noise.
No, this marble isn't warped. The PowerShot G7's lens shows some distortion at its widest. Though we expect it on wide-angle lenses, 35mm-equivalent isn't really that wide.