Archived posting to the Leica Users Group, 2011/02/09
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Fantastic thinking!! I'm sure it is relevant. Tina On Wed, Feb 9, 2011 at 5:40 PM, Douglas Sharp <douglas.sharp at gmx.de> wrote: > Hi all, > > Just a rather abstract, and possibly absolutely silly idea - I'm not even > sure whether the same parameters (or indeed physics and electronics) apply, > but we used to get banding effects like that on seismogram recordings when > a > powerful power source was somewhere near to the geophone line on seismic > surveys. - if anyone could work out the frequency, you might be able to > locate the source. > > Did you have a mobile phone switched on and close to the camera when the > banding happened, were you near a mobile phone antenna? Close to > high-voltage power lines, a generator or or a starting car? These were > typical of the electronic and acoustic problems we encountered, and the > very > devil to get rid of. > > Cheers > Douglas > > > > > On 09.02.2011 22:54, Richard Man wrote: > >> Nathan, I think Geoff's analysis is correct. I don't think this is the >> "banding" that most people refer to. I have gotten those on the M8 as >> well, >> for example, a purple band of light where there's a specular light source. >> >> One thing to remember is that even when shooting RAW, the CPU is doing a >> lot >> of interpolation. There is always a chance that some boundary conditions >> would cause a bug to show up. If your condition is becoming repeatable, it >> could even be some hardware defects that are showing up in the circuitry, >> combined with certain operating conditions that cause the problems you >> see. >> >> As for fragility of a brand/camera, electronics changes everything. >> Supposedly the Canon 1Ds Mark-whatever never resolved their autofocus >> problems etc. I think the difference is that people do expect a higher >> level >> of reliability and performance due to the price, but in reality, it isn't >> always true. >> >> >> > > _______________________________________________ > Leica Users Group. > See http://leica-users.org/mailman/listinfo/lug for more information > -- Tina Manley, ASMP www.tinamanley.com