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Old 1st of August 2009 (Sat)   #1
57hardtop
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Default USB Cable for Tethered Shooting - Help Please

OK, forgive me if this is a stupid question, but I've just started to experiment with tethered shooting using the EOS utility and DPP. Software questions, opinions and preferences aside, my question is about the USB cable. I'm using the cable that came with my 40D...its about 5 feet long. I've read that I can use a longer USB cable, but it should not be longer than 15 foot or the there will be signal loss. Here's my question...can I use any generic third party USB cable (with the proper ends, of course)? The Canon supplied USB cable has a small barrel shaped plastic thing inline...about 1 inch from the end that plugs into the camera. I'm assuming that this thing is important. I've never seen a third party USB cable with one of those things. It looks like some kind of a regulator or something. Any advise and/or guidance will be much appreciated. Thanks
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Old 1st of August 2009 (Sat)   #2
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Default Re: USB Cable for Tethered Shooting - Help Please

I've had mine at least plugged in with the cable that came with my P&S so I don't think it matters as long as the plug fits.
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Old 1st of August 2009 (Sat)   #3
57hardtop
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Default Re: USB Cable for Tethered Shooting - Help Please

Thanks Tom...my Canon P&S has a USB cable too, and it also has one of those barrel things. I don't think it would matter either, but I can't help but wonder what that barrel thing is or does. Why would Canon put it there? I'm probably just being too cautious.
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Old 1st of August 2009 (Sat)   #4
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Default Re: USB Cable for Tethered Shooting - Help Please

The barrel thing is a ferrite inductor block and helps to stop interference getting into the USB signals. It's not a big deal and you are correct - most after market USB cables do not have it. I use my 40D tethered quite a bit and have an additional USB female to male cable attached along with the normal cable and have never had any issues with the them. With the two cables connected it's about 12 ft in length.
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Old 1st of August 2009 (Sat)   #5
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Default Re: USB Cable for Tethered Shooting - Help Please

Quote:
Originally Posted by jdbroadwater View Post
The barrel thing is a ferrite inductor block and helps to stop interference getting into the USB signals. It's not a big deal and you are correct - most after market USB cables do not have it. I use my 40D tethered quite a bit and have an additional USB female to male cable attached along with the normal cable and have never had any issues with the them. With the two cables connected it's about 12 ft in length.
Thanks JD...that's exactly what I needed to hear...and thanks for satisfying my curiosity on what the hell those things are
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Old 2nd of August 2009 (Sun)   #6
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Default Re: USB Cable for Tethered Shooting - Help Please

I know this may sound mad, but I have had it confirmed by Canon tec support here in the Uk, I had a problem with my Canon scanner & Canon laser printer, these will only work with a USB cable no longer than 2 meters.
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Old 2nd of August 2009 (Sun)   #7
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Default Re: USB Cable for Tethered Shooting - Help Please

I've used 12m of usb between my 50D and my laptop. The two 5m extension cables were the powered 'booster' type.
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Old 2nd of August 2009 (Sun)   #8
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Default Re: USB Cable for Tethered Shooting - Help Please

I use 3 x 1.5m extenders including the given usb cables for tethered shooting. No problems.
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Old 2nd of August 2009 (Sun)   #9
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Default Re: USB Cable for Tethered Shooting - Help Please

Just the other day I tried it with a 6$ USB A to mini 10 meter cable and it worked fine...
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Old 2nd of August 2009 (Sun)   #10
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Default Re: USB Cable for Tethered Shooting - Help Please

Or you could give this a go: http://photography-on-the.net/forum/...d.php?t=695676
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Old 3rd of August 2009 (Mon)   #11
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Default Re: USB Cable for Tethered Shooting - Help Please

The difference between a 3rd party cable and the one from Canon should be minimal. The max length I believe for full USB speed is 5m, but any noise could reduce this. The cable is shielded, but the noise can be from your equipment.

The ferrite, if there is one, is to help the device meet FCC requirements and won't impact cable length.
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Old 3rd of August 2009 (Mon)   #12
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Default Re: USB Cable for Tethered Shooting - Help Please

Another thing: If you use wireless USB, then DSLR remote Pro is a good tethered software choice, since it does not close down when connectivity with the camera is lost. Rather, it will reconnected automatically.
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