Canon provides seven gain levels: 36dB, 18dB, 12dB, 6dB, 3dB, 0dB, and -3dB (although, irritatingly, you can only program three on the L/M/H switch. At its lowest gain, video looks incredibly smooth, and even as high as 3dB you can shoot in low light with relatively little noise. At 12dB there's quite a bit of (mostly) luminance noise, but it doesn't really obscure much detail and you can shoot in near darkness. The quiet on-camera mic works pretty well in basic up-close-and-personal shooting, but you've got plenty of add-on options should your needs be more complex.
As you'd expect from camcorders in their class, the XH's produce excellent HD and SD video: sharp, saturated and smooth. The controversy that began with the XL H1 over the relative quality of Canon's 24F versus Panasonic's 24P--implemented by models such as the Panasonic AG-HVX200--continues, and applies equally to the XH series. To summarize: Panasonic's 24P is a full 720-line frame of video captured roughly every 1/24 second. Canon's 24F "fakes" progressive scan by slightly offsetting the vertical readout of the green CCD from those of the blue and red, generating a frame with 1.5x the lines of the 540-line field, or 810 lines, albeit ones using spatial rather than temporal interlace. As a result, the quality question arises: Do Canon's pseudo-progressive frames look the same as a true progressive frame or does one see artifacts?
I didn't see any; footage I shot specifically to test for 24F artifacts looked correct to me. (I played it back directly on our reference HDTV, the 50-inch Pioneer Pro-FHD1, to bypass the myriad software issues surrounding 24fps editing and playback.) However, if you want to see a bevy of test results, you can find them in the Texas Shootout on DV.com.
At their aggressive prices, the Canon XH A1 and XH G1 look mighty attractive compared to their respective competitors in the indie filmmaker and entry-level studio markets.
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Canon XH A1:
