essentially the same. They both have XLR connectors. (I use Shure SM58 handhelds - wired and wireless - all the time.)
The Canon GL1 (and GL2) have a 1/8" (3.5mm) stereo audio-in jack.
See pages 9 and 80 for the location of the external mic jack.
See page 99 (on the upper right - "Input level").
Their suggestions to use headphones to monitor the captured audio (page 27) and use the mic attenuator to control the audio gain levels (page 80) are good ones.
While it is possible to obtain/use a 1/8" - XLR "cable tail", that is not a good idea. The correct way is to get an XLR adapter (like the juiceLink CX231 or BeachTek DXA-6). The mic plugs into the XLR mic cable, the other end of the XLR mic cable plugs into the XLR adapter, the XLR adapter 1/8" cable plugs in to the camcorder's 1/8" audio in jack.
If you use only 1 mic, then consider using the "Mono" setting on the Mono/Stereo switch of the XLR adapter. This will have the camcorder record the audio to both the left and right channels. If you use only 1 mic and select the Stereo item on that XLR adapter switch, the audio will be recorded to only the channel to which the mic is connected.
Hi. I'm having trouble finding out if a Shure Beta Mic (either 87A or 87C) is compatible with my Canon GL1 camcorder. Could you please help? I need to buy an external mic for clearer audio during interviews. Thanks!