Posted by
R. Ticle on
URL: https://www.es-forum.com/Camera-Motor-EMF-Cause-for-concern-tp1546119p1546127.html
Hey Bill,
There is a 2.5" screen on the back, but because this is an SLR style
camera, it has to be held up to the head to "shoot", because you look
directly through the optical viewfinder. The screen is always off
when taking the picture.
I hear you - I don't feel anything from using the camera, and most
people here so far have said they probably wouldn't worry about it.
It may not even go as high as it shows, because it's an outdated
meter. But - like I said in my last reply to someone else, I'd still
rather shield it.
Best,
R.
--- In
[hidden email], "Bill Bruno" <wbruno@...> wrote:
>
> I have heard of people reacting to cameras.
>
> What's probably important is the field inside your skull,
> i.e. try to put the meter where you brain is, not right up
> to the camera. But I would not want 3 milligauss even.
> Short exposure is better than long, but pulses can be bad.
>
> Having a screen on the back may be better, although a smaller
> screen could be safer compared to the new big ones.
> Bill
>
> On Thu, Mar 6, 2008 at 6:19 PM, rticleone <rticleone@...> wrote:
>
> > I have really gotten into photography in the last couple of years.
> > With the advent of digital cameras, I am able to take pictures without
> > dealing with developing chemicals, or the cost of many takes in film
> > to keep one shot.
> >
> > I was recently gifted (birthday gifted) a Digital SLR Camera. It
> > works very well and takes great pictures.
> >
> > First thing I did was check it's EMF output. Very low electrical
> > fields. That can be dealt with simply. Great!, I thought.
> >
> > Then I check it's magnetic fields. And I thought, "sh*t!". Because
> > naturally whenever the lens focuses automatically, or the shutter
> > opens to take a picture, there is a burst of a magnetic field from the
> > motor. I can't BELIEVE I didn't think of this before. Gah...
> >
> > It jumps to about 35 milligauss on average (meter up against the
> > camera, just like the face of whoever's using it - this is the kind
> > where you look through the viewfinder, it's not a point and shoot
> > where you use the screen).
> >
> > Do I have reason to be concerned about these bursts of magnetic
> > fields? I mean, it's not constantly against my head, and they last for
> > perhaps a second or less at a time, only when the shutter fires. I
> > can even get away from the motor focusing the lens most of the time by
> > using manual focus and adjusting it by hand.
> >
> > Unfortunately, I can't just take this thing apart and try and shield
> > the motor from the inside, myself. There is a very thin and flexible
> > foil called Met Glas that sounds like it could be used for such a
> > purpose, but it's the matter of getting it inside that's the issue.
> >
> > Maybe I can find a technician who's willing to do it?...Hmm...
> >
> > I can theoretically shield some parts of the camera from the outside
> > with this material.
> >
> > But - what are your thoughts on these brief magnetic fields?
> >
> > Best,
> >
> > R.
> >
> >
> >
>
>
> [Non-text portions of this message have been removed]
>