View Single Post
      10-25-2012, 08:15 PM   #3
ddk632
Lieutenant Colonel
 
Drives: 2013 BMW X6M
Join Date: Mar 2012
Location: South Florida

Posts: 1,622
iTrader: (0)

Garage List
Ok that makes sense - it's a function of the hardware light sensitivity (I.e, how fast light fills photosites) of the sensor itself, so if a sensor's base ISO is 200 and you shoot at 100, the camera has to de-amplify the analog data of the actual photons received at the photosites.

So shooting below base ISO doesn't make a lot of sense, then, in terms of IQ, and possibly DR, because you might clip highlights sooner at an ISO that's less than base. But in practice, perhaps this is not noticeable.

Thanks - you've pointed me in the right direction to do some more research.

Found an interesting discussion or two here:
http://www.cameralabs.com/forum/viewtopic.php?t=4503
http://photo.stackexchange.com/quest...mera/6622#6622

Which led me here:
http://photo.stackexchange.com/quest...igital-cameras

And here...
http://photo.net/learn/dark_noise/



I am a software guy so I love the technical details. I also have a need to better understand sensor tech, as well as LCD tech, for a project I'm working on, not photography related.
__________________
ddk632 | David Khaykin | (The K is Silent!)
2013 Monte Carlo Blue BMW X6M w/ Mugello Red Interior (E71 LCI)
flickr photos [ Best Of | BMW | Motorcycles & DSLR's ]
ddk632 is offline   United_States
0
Reply With Quote