a._valerio Posted March 19, 2013 Share Posted March 19, 2013 <p>I tried a 540EZ on a T90, and am getting a strong, sharp, short, capacitor-like "zinggg" or "whoosh" sound everytime I half-press the shutter button. It's similar to the sound you get if you put your flash unit near a radio and fire it.</p><p>What might this be, and is it going to damage the camera? Is it time to find a 300TL?</p><p>Thanks.</p> Link to comment Share on other sites More sharing options...
jsigua Posted March 19, 2013 Share Posted March 19, 2013 <p>What you are hearing is the pre-flash emitter on the flash coming on. If you haven't looked, you'll see at the front of the 540EZ every time you press the shutter button. The same thing happens with the 300TL by the way so I wouldn't worry about it.</p> Link to comment Share on other sites More sharing options...
walter_degroot Posted March 19, 2013 Share Posted March 19, 2013 as far as I know the T series flashes are for the t5- & t70 AND the ez series is for the film eos the ex is for the g series and the digital eos is there something I did noit see on the www OR does the t70 use a newer flash? Link to comment Share on other sites More sharing options...
a._valerio Posted March 19, 2013 Author Share Posted March 19, 2013 <blockquote> <p>What you are hearing is the pre-flash emitter on the flash coming on. If you haven't looked, you'll see at the front of the 540EZ every time you press the shutter button. The same thing happens with the 300TL by the way so I wouldn't worry about it.</p> </blockquote> <p>Wow, that makes sense. Thanks! So, the preflash tube fires every time the shutter button is half-pressed?</p> <p> </p> <blockquote> <p>as far as I know the T series flashes are for the t5- & t70 AND the ez series is for the film eos the ex is for the g series and the digital eos is there something I did noit see on the www OR does the t70 use a newer flash?</p> </blockquote> <p>We're talking about the T90 here. It can use either T-series or EZ-series units. The 300TL is the only T-series unit that provides the T90 with TTL flash control, but the EZ-series speedlites do, also.</p> Link to comment Share on other sites More sharing options...
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