That would be "when LEVEL 6 camera geeks talk shop".
I could list assembly language source code for changing the pre-amp gain on the A/D that I used. I cached the settings and speeded up the conversion rate dramatically. But it could result in spontaneous non-geek combustion.
I could list assembly language source code for changing the pre-amp gain on the A/D that I used. I cached the settings and speeded up the conversion rate dramatically. But it could result in spontaneous non-geek combustion.
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back alley
IMAGES
my deepest apologies...as i understood absolutely nothing said it was impossible for me to accurately gauge what geek level you chaps were at...
I rely on that fact. I make this stuff up as I type.
jaapv
RFF Sponsoring Member.
We must consider one thing, On the M9 Leica has shifted the definition of the black point in the DNG parameters to get a noise reduction (just like Canon does I believe) so the output is biased.
Do they truncate the output of the A/D converter, or just set a parameter in the DNG header to define a noise floor? If it the latter, the parameter can be ignored. A noise-reduction algorithm can simply operate on the raw values.
Keith
The best camera is one that still works!
Is there a phrase book available for this thread ... who do I contact?
Keith, I put in the link for the Long data sheet for the KAF-10500!
It should be intuitively obvious to the most casual of readers after skimming through...
It should be intuitively obvious to the most casual of readers after skimming through...
jaapv
RFF Sponsoring Member.
They set the parameter in the header. Thanks for the explanation.
sojournerphoto
Veteran
No, Canon doesn't, but Nikon does. That's why astrophotographers prefer canons - by stacking multiple shotes they pull data from below the single frame noise threshold.
Canon raw is raw (ignoring on chip NR). Nikon is processed a bit.
Mike
Gabriel M.A.
My Red Dot Glows For You
If somebody finds a Nikon DSLR that doesn't, then, does that mean it'll be...a collectible?
BTW, the only parts I understand fully in this thread is all the computer science stuff...as for all the other electrical engineering lingo...bad memories from college.
willie_901
Veteran
The OP's observation that Canon's noise levels depend on whether or not multiples of the base ISO are selected is unique to Canon technology. If I remember correctly, Canon's current bodies use different technology and do not have this base ISO quirk. At any rate, non-Canon cameras do not benefit from setting ISO in multiples of the system base ISO.