grimey121uk Senior Member  721 posts Joined Oct 2007 Location: Bolton UK More info | May 10, 2008 09:06 | #1 Today i tried to connect my external flash gun (sunpak PF30X) and i could not get it to fire. Im assuming that this means its dead although strange thing is that i can test fire the flash but the camera will not fire it at all. ive tried new batteries, taking battery oput of my 40d etc but still no luck. Canon 50D [] Canon 40D [] Sigma 50 f1.4 EX [] Sigma 10-20 EX [] Sigma 70-200 f2.8 EX [] Canon 17-40 L [] Canon 100-400 L [] Canon 430EX flash []
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Wilt Reader's Digest Condensed version of War and Peace [POTN Vol 1]  More info | May 10, 2008 09:27 | #2 I presume that your statement ,"i can test fire the flash", pertains to usage of the button on the back of the flash to fire the unit. Try the flash off the camera, using the hotshoe contacts shorted together (the center contact shorted to the edge contact) to test the hot foot of the flash. If that works fine, then the problem can be simply that the hot foot contacts are not coming into contact with the hot shoe contacts sufficiently. You need to give me OK to edit your image and repost! Keep POTN alive and well with member support https://photography-on-the.net/forum/donate.php
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WalczakPhoto Goldmember 1,034 posts Joined Apr 2008 More info | May 10, 2008 09:27 | #3 First thing I would do if you haven't already is try it out on another camera...see if it's a problem with the flash or your camera. "It is horrifying that we have to fight our own government to save the environment. " - Ansel Adams
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May 11, 2008 02:32 | #4 just tried the flash on my 400d and it works fine Canon 50D [] Canon 40D [] Sigma 50 f1.4 EX [] Sigma 10-20 EX [] Sigma 70-200 f2.8 EX [] Canon 17-40 L [] Canon 100-400 L [] Canon 430EX flash []
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May 12, 2008 06:45 | #5 update the sunpak seems to be incompatible with my 40d since updating to the latest firmware as i have tested it with a canon 430 flash and it works fine. Canon 50D [] Canon 40D [] Sigma 50 f1.4 EX [] Sigma 10-20 EX [] Sigma 70-200 f2.8 EX [] Canon 17-40 L [] Canon 100-400 L [] Canon 430EX flash []
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May 16, 2008 08:09 | #6 i found out why the sunpak didnt work its because i updated my 40ds firmware to 1.09. Canon 50D [] Canon 40D [] Sigma 50 f1.4 EX [] Sigma 10-20 EX [] Sigma 70-200 f2.8 EX [] Canon 17-40 L [] Canon 100-400 L [] Canon 430EX flash []
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elysium "full of stupid banter"  11,619 posts Likes: 1 Joined Jul 2007 Location: Harrow/London/UK/GB/That Part Of The World/Next To France More info | May 16, 2008 08:12 | #7 grimey121uk wrote in post #5535528  i found out why the sunpak didnt work its because i updated my 40ds firmware to 1.09. so today i got a good price on a new 430EX from currys.digital for £160 test shot here https://photography-on-the.net …php?p=5535428#post5535428 No way, cheaper than Warehouse Express. Great deal! Im looking for another soon. Everyday, a programmer finds a way of creating an idiotproof program. Everyday, the universe spits out another idiot.....So far, the universe if winning
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Wilt Reader's Digest Condensed version of War and Peace [POTN Vol 1] More info | May 16, 2008 09:16 | #8 grimey121uk wrote in post #5535528 i found out why the sunpak didnt work its because i updated my 40ds firmware to 1.09. Oh, joy! We used to have to think only about new camera bodies wreaking havok with lens firmware, and having to send Sigma lenses back for rechipping to run on the newest Canon bodies. Now we also have to worry about camera firmware updates being responsible for rendering third party flash units inoperable, too! You need to give me OK to edit your image and repost! Keep POTN alive and well with member support https://photography-on-the.net/forum/donate.php
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May 16, 2008 09:27 | #9 Wilt wrote in post #5535875 Oh, joy! We used to have to think only about new camera bodies wreaking havok with lens firmware, and having to send Sigma lenses back for rechipping to run on the newest Canon bodies. Now we also have to worry about camera firmware updates being responsible for rendering third party flash units inoperable, too!  What is the source of your information for this apparent conflict? it worked on my 40d with 1.05 firmware Canon 50D [] Canon 40D [] Sigma 50 f1.4 EX [] Sigma 10-20 EX [] Sigma 70-200 f2.8 EX [] Canon 17-40 L [] Canon 100-400 L [] Canon 430EX flash []
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CurtisN Master Flasher  19,129 posts Likes: 11 Joined Apr 2005 Location: Northern Illinois, US More info | May 16, 2008 09:33 | #10 Interesting. "If you're not having fun, your pictures will reflect that." - Joe McNally
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Wilt Reader's Digest Condensed version of War and Peace [POTN Vol 1] More info | May 16, 2008 09:40 | #11 grimey121uk wrote in post #5535935 it worked on my 40d with 1.05 firmware it works on a 40d in the shop with standard 1.03(i think) firmware it works on my 400d since i updated to 1.09 it refused to work The fully scientific proof would be to reload 1.05 firmware on the camera and confirm operability of the flash, then once again load 1.09 firmware on the camera and again confirm the inoperability. Then we could have absolutely no doubt!!! You need to give me OK to edit your image and repost! Keep POTN alive and well with member support https://photography-on-the.net/forum/donate.php
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runninmann what the heck do I know?  More info | May 16, 2008 09:42 | #12 Wilt wrote in post #5536001 The fully scientific proof would be to reload 1.05 firmware on the camera and confirm operability of the flash, then once again load 1.09 firmware on the camera and again confirm the inoperability. Then we could have absolutely no doubt!!! Yep. You have to be able to turn the defect "on" and "off".
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May 16, 2008 09:43 | #13 Wilt wrote in post #5536001 The fully scientific proof would be to reload 1.05 firmware on the camera and confirm operability of the flash, then once again load 1.09 firmware on the camera and again confirm the inoperability. Then we could have absolutely no doubt!!! yes i agree, but with me having a ton of exams at uni and stuff to do at work i wouldnt of had the time. the canon works flawless though. Canon 50D [] Canon 40D [] Sigma 50 f1.4 EX [] Sigma 10-20 EX [] Sigma 70-200 f2.8 EX [] Canon 17-40 L [] Canon 100-400 L [] Canon 430EX flash []
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