bgelfand Posted March 9, 2022 Share Posted March 9, 2022 If it were practical to shield ICD/Pacemakers, the manufactures would have done so, and the American Heart Association Article I cited in my post #9 (above) would be much, much shorter. The American Heart Association is not a group of lawyers, but a well-respected, medical association. If they issue a warning, one would be well advised to heed it. Link to comment Share on other sites More sharing options...
c_watson1 Posted March 9, 2022 Share Posted March 9, 2022 First World problem mostly for plutocrats with bum tickers who can afford a 14 large lens. Never mind far more pressing crises affecting civilians worldwide. Link to comment Share on other sites More sharing options...
CvhKaar Posted March 10, 2022 Author Share Posted March 10, 2022 First World problem mostly for plutocrats with bum tickers who can afford a 14 large lens. Never mind far more pressing crises affecting civilians worldwide. Mmmm this kind / size of lenses are mainly the daily working tools for pro- photographers cq journalists, .... Link to comment Share on other sites More sharing options...
c_watson1 Posted March 10, 2022 Share Posted March 10, 2022 Mmmm this kind / size of lenses are mainly the daily working tools for pro- photographers cq journalists, .... So are you--or anyone you know personally--affected by this problem(sic)? A little perspective is in order... Link to comment Share on other sites More sharing options...
Mary Doo Posted March 10, 2022 Share Posted March 10, 2022 So are you--or anyone you know personally--affected by this problem(sic)? A little perspective is in order... Dunno - If the magnetic feature is what you are referring to because it's a new design. Wonder why Nikon does this given its disadvantages - say, someone with a pace-maker may borrow the lens without knowing the probable risk. More info here: https://petapixel.com/2022/03/07/nikons-new-lens-tech-is-a-danger-to-medical-devices/ Link to comment Share on other sites More sharing options...
c_watson1 Posted March 10, 2022 Share Posted March 10, 2022 At C$18,000 a copy, this concern won't cost me any sleep. Nikon is just applying triple-layer Kevlar plus a ceramic plate to its corporate rear in the event of possible product liability suits. 1 Link to comment Share on other sites More sharing options...
Mary Doo Posted March 11, 2022 Share Posted March 11, 2022 Nikon is just applying triple-layer Kevlar plus a ceramic plate to its corporate rear in the event of possible product liability suits. I think this may not help if someone does suffer great harm or death due to a hazardous design that is known to the manufacturer. Not everyone reads those perfunctory disclaimers and warnings attached to many products. That's just the way it is and the law and jury recognize that. One wonders how dangerous it really is. 1 Link to comment Share on other sites More sharing options...
ilkka_nissila Posted March 11, 2022 Share Posted March 11, 2022 Dunno - If the magnetic feature is what you are referring to because it's a new design. Wonder why Nikon does this given its disadvantages - say, someone with a pace-maker may borrow the lens without knowing the probable risk. It's just a more powerful motor. Even cell phones need to be kept 15 cm or more away from a pacemaker, so the user of such a device needs to be aware of a lot of things. The average age when a pacemaker is installed is 75. How many pacemaker users carry 3 kg lenses, know enough to survive with the pacemaker (ie. do not use cell phone close to your chest), but would use this lens without checking the warnings that are featured prominently in the marketing literature? Not that many, I would assume. Nikon are just being careful. 1 Link to comment Share on other sites More sharing options...
mike_halliwell Posted March 11, 2022 Share Posted March 11, 2022 A quick trawl around the Web reveals most modern Pacemakers are indeed shielded, but the biggest issue is dental chairs/tools.... especially descalers. Who knew..? Link to comment Share on other sites More sharing options...
rodeo_joe1 Posted March 11, 2022 Share Posted March 11, 2022 Mobile phones are the biggest EMC pest by far, IMO. Now, part of our (UK) free public broadcasting bandwidth is being taken away for the - spurious - benefit of 5G Internet users. (My 4G enabled phone very rarely creeps up to claimed 3 or 4G data rates anyway!) Plus I inadvertently had my phone near to my sound recording setup the other day. The "beepity beep" of my phone reporting back to the mother ship was clearly audible at regular intervals, and with the phone quite a distance from the mixing desk. Only removing it from the room completely stopped the interference. So if I'm ever fitted with a pacemaker, my phone will be kept well away from it. Lenses.. not so much. 1 Link to comment Share on other sites More sharing options...
rodeo_joe1 Posted March 11, 2022 Share Posted March 11, 2022 Shielding the vulnerable part is easy to do. Shielding all the many things that could do harm to the vulnerable thingy is undoable. The issue is that some pacemakers have to be left open to a magnetic field in order to change their function. Whereas the magnets in a lens don't need to allow their field to extend beyond the working of the AF motor. Get it? 1 Link to comment Share on other sites More sharing options...
mike_halliwell Posted March 11, 2022 Share Posted March 11, 2022 Only removing it from the room completely stopped the interference. ....or pop it one of those Faraday boxes to keep your car keys safe next to the front door...:D Link to comment Share on other sites More sharing options...
CvhKaar Posted March 11, 2022 Author Share Posted March 11, 2022 ....or pop it one of those Faraday boxes to keep your car keys safe next to the front door...:D or just switch it off...no box needed...;) 1 Link to comment Share on other sites More sharing options...
q.g._de_bakker Posted March 11, 2022 Share Posted March 11, 2022 The issue is that some pacemakers have to be left open to a magnetic field in order to change their function. Whereas the magnets in a lens don't need to allow their field to extend beyond the working of the AF motor. Get it? So shielding is not shielding. No "same difference". Get it? Link to comment Share on other sites More sharing options...
mike_halliwell Posted March 11, 2022 Share Posted March 11, 2022 or just switch it off My iphone 5S takes ages to boot up from cold. Who has the time to wait...?;) Link to comment Share on other sites More sharing options...
mike_halliwell Posted March 11, 2022 Share Posted March 11, 2022 Some sort of knitted singlet made with metal thread?:cool: 1 Link to comment Share on other sites More sharing options...
bgelfand Posted March 11, 2022 Share Posted March 11, 2022 Some sort of knitted singlet made with metal thread?:cool: Oh, to heck with half-measures. Chain mail dragging a grounding wire would work. ;) 2 Link to comment Share on other sites More sharing options...
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