acanalda Posted January 12, 2009 Share #1 Posted January 12, 2009 Advertisement (gone after registration) Well, once we have made the Shutter Speed tester here is how to use it. You need. The tester (obvious !) A camera to test. In this case, I have used a Rollei Heidoscop (I'll promise to put my Leica 1A test process as soon as I have ended my shutter restoration work) PC with Sound analisys software. Connect the tester to the PC via the sound card Place the tester behind the shutter Place the laser pointer in front the lens Turrn on the laser pointer Click on the software's record button Fire the shutter Stop recording Check the graphic and select the frame between peaks Look at the selection's lenght (in seconds) In this example I have checked the 1/300 speed. I've obtained 0.004 secs or 1/250 not too bad for a 86 years old camera! Regards, Arturo Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! ' data-webShareUrl='https://www.l-camera-forum.com/topic/73990-how-to-use-the-shutter-speed-tester/?do=findComment&comment=776022'>More sharing options...
Advertisement Posted January 12, 2009 Posted January 12, 2009 Hi acanalda, Take a look here How to use the Shutter Speed tester. I'm sure you'll find what you were looking for!
UliWer Posted January 12, 2009 Share #2 Posted January 12, 2009 Are you sure that sound analysis will always produce reliable results? What about those - most precious - sounds a good mechanical Leica shutter produces with long speeds long after it closed? Not to speak of the - infamous - rewind-noise of a M8? Link to post Share on other sites More sharing options...
acanalda Posted January 12, 2009 Author Share #3 Posted January 12, 2009 Yes the results are accurate as you don't analyze the sound of the camera! The phototransistor converts the light form the laser in sound. This is the sound that you are testing. And of course the laser light only reaches the tester when the shutter is open. regards, Arturo Link to post Share on other sites More sharing options...
jc_braconi Posted January 12, 2009 Share #4 Posted January 12, 2009 Is this the one made in China ? Link to post Share on other sites More sharing options...
acanalda Posted January 12, 2009 Author Share #5 Posted January 12, 2009 Well. I live in Madrid ! And I made the photos yesterday while I was working in the tester. I found the circuit scheme searching in google and it works fine. I don't know if there is one shutter tester made in China with this specs. Regards, Arturo Link to post Share on other sites More sharing options...
luigi bertolotti Posted January 12, 2009 Share #6 Posted January 12, 2009 That's cute... but if I have understood well, you must position the tester behind the shutter so that its light sensor can catch the laser pointer beam... how do you do this with a Leica I ? Its back cannot be opened like the one of Leica M cameras.... you cannot position anything behind the shutter. Link to post Share on other sites More sharing options...
luigi bertolotti Posted January 12, 2009 Share #7 Posted January 12, 2009 Advertisement (gone after registration) Sorry.... I hadn't red all your story... if your Leica I is dismounted for restoration... of course you can work the way you say Link to post Share on other sites More sharing options...
jc_braconi Posted January 12, 2009 Share #8 Posted January 12, 2009 Well. I live in Madrid ! And I made the photos yesterday while I was working in the tester. I found the circuit scheme searching in google and it works fine. I don't know if there is one shutter tester made in China with this specs. Regards, Arturo I have seen quite the same for sale on the web, made and may be sale in China, I have to find again the link. Link to post Share on other sites More sharing options...
acanalda Posted January 13, 2009 Author Share #9 Posted January 13, 2009 JC I have found the Chinese unit in EBay. I'm not sure if it is the same one. It appears to have an electronic counter. Also the seller says that it can't be used with Rollei or similar deep chamber cameras. Regards, Arturo Link to post Share on other sites More sharing options...
Guest Ron (Netherlands) Posted January 15, 2009 Share #10 Posted January 15, 2009 Very nice. Did you test it against a modern camera, one that supposed to have accurate shutterspeeds e.g. the M8 or a digital SLRF camera? Link to post Share on other sites More sharing options...
acanalda Posted January 16, 2009 Author Share #11 Posted January 16, 2009 Hi Ron, Sure! I have tested it in a Canon EOS 3 (not the last Canon digital model indeed !!! ). Both very accurate. The tester and the camera. Diferences below 1% I have an M8 but as you can see in the example, is it necesary to put the tester behind the shutter. And at this moment I'm not planning to make a hole in the back of my M8 !! Regards, Arturo Link to post Share on other sites More sharing options...
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