koh_boonwei Posted February 13, 2004 Share Posted February 13, 2004 As above.. kindly advise.. thanks~! Link to comment Share on other sites More sharing options...
david_h._hartman Posted February 13, 2004 Share Posted February 13, 2004 The B setting is electromagnetically controlled while the T setting is mechanical and battery free when initiated with the backup mechanical release lever. Link to comment Share on other sites More sharing options...
richard_cochran Posted February 13, 2004 Share Posted February 13, 2004 You can prove it by removing the battery from your F3 andshooting in T with the backup release lever. It's obviouslynot using power when the battery is removed!<p>I'm not entirely sure whether shooting in T usespower if it's fired by the top (electrical) release. Obviously,some power is used to initially trigger the shutter electrically,just like at any other shutter speed. But I'd be interested to knowdefinitively whether power is used while the shutter is beingheld open. Link to comment Share on other sites More sharing options...
hique Posted February 13, 2004 Share Posted February 13, 2004 Well, I did that experiment and took off the battery. Actually the shutter button does not work at any speed, not even the 'T' speed. If you want to use the 'T' speed without batteries or without consuming it, you have to use the mechanical shutter lever. This way you can make hours exposures without draining battery :) Cheers. Link to comment Share on other sites More sharing options...
david_h._hartman Posted February 13, 2004 Share Posted February 13, 2004 You can even remove the MS-3 from the MD-4 or S-76 batteries from the F3 and the time exposure continues but that still doesn�t tell if power is being drawn on long exposures. The T setting is clearly mechanical not electromagnetic but the camera could still draw power. This might deplete the S-76(s). I don�t think this really matters if the MD-4 is attached but I�d like to know for those times when I�d like to use T without the MD-4. Anyone? Link to comment Share on other sites More sharing options...
koh_boonwei Posted February 14, 2004 Author Share Posted February 14, 2004 thanks for all advises. Greatly appreciated. Regards Link to comment Share on other sites More sharing options...
Robert_Lai Posted February 14, 2004 Share Posted February 14, 2004 Try this: Fire the F3 on T using the electromagnetic release. Then take the batteries out of the bottom. See what happens! I can't tell you because I've got film inside my camera at the present. Link to comment Share on other sites More sharing options...
david_h._hartman Posted February 14, 2004 Share Posted February 14, 2004 The shutter stays open. Link to comment Share on other sites More sharing options...
kenneth_logan Posted February 14, 2004 Share Posted February 14, 2004 David, After the shutter stays open in the usage as you described immediately above, does it respond normally to moving from "T" to some other dial setting in order to (supposedly) close the shutter? Link to comment Share on other sites More sharing options...
david_h._hartman Posted February 15, 2004 Share Posted February 15, 2004 Sure does. Link to comment Share on other sites More sharing options...
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