Archived posting to the Leica Users Group, 1999/10/15
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Rob, It seems sensitivity and sensibility are having less and less place on the LUG. I am constantly amazed by people like Erwin, Horst, Pascal, et al., for whom English, let alone American English, is not their first language. Focusing on Leica content, in concise, objective terms is their forte. The language used contains technical errors, but very rarely shows stupidity or arrogance. The vast majority of American Luggers debase the language in content-free posts, frequently containing vitriol. Leicas have been a tool of the most humane, compassionate and visually lyrical photographers. What a shame that the vast majority of LUG posts would lead the under-informed neophyte to believe the opposite. If only we could legislate for good behaviour (with apologies to Vaclav) regards Alistair - -----Original Message----- From: Mueller, Rob [mailto:rob.mueller@eds.com] Sent: Friday, October 15, 1999 11:54 AM To: leica-users@mejac.palo-alto.ca.us Subject: RE: [Leica] Re: Leica Users digest V12 #68 I read this email. had no idea what was being said. but I really liked it. then Alexey ended with "like, duh", and I felt REALLY insignificant. Rob Mueller - -----Original Message----- From: Alexey Merz [mailto:alexey@webcom.com] Sent: Thursday, October 14, 1999 6:41 PM To: leica-users@mejac.palo-alto.ca.us Subject: [Leica] Re: Leica Users digest V12 #68 Alexey Merz: >>Nope. The electon signal accumulated in the CCD potential >>well has to be amplified prior to "counting" in the A/D >>converter. Anthony Atkielski: >No matter how much you amplify it, you still get discrete levels. >Every additional electronic adds one indivisible unit charge. Bullshit. No actual MOSFET amplifier used in even a high-zoot CCD will feed a signal into the A/D converter sufficiently noise-free that the A/D converter will relibly report whether 17586 electrons or 17587 electrons had accumulated in a given potential well. Hell, the pre-amplification readout noise is greater than that. You are simply mistaken. There is *nothing* quantal about the signal that leaves the CCD. By any practical definition, pixel amplitude is an analog signal prior to its interpretation at the A/D converter. That's why it's called an A/D (analog/digital) converter. Like, duh. - -Alexey