Steve Sharpe wrote: > Coincidentally, I was out a couple of nights ago in my field trying > to do the same thing with my old *ist D and a Tamron 17mm f3.5 > adaptall lens. I took a series of 30 second exposures at ISO 800 with > both noise reduction on and then off. I was racing an incoming cloud > bank so I knew they weren't going to be that good, and a quick glance > at them later in Aperture confirms that.
> > Interesting, though: in each frame I took with the noise reduction > off, there is a bright glow in the upper left corner. I assume that > is heat from the camera's power supply. > Amp glow they call it. I've also experienced it on the *ist D with long exposures. From what I've read there can be many causes of it from all different types of circuitry. Often caused by the heat of the sensor readout circuitry. Tom C. -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net to UNSUBSCRIBE from the PDML, please visit the link directly above and follow the directions.
