"Siddhartha Jain" wrote in message
oups.com...
Hi,

ISO is 50,100, 200 ...... 3200. Now that ISO is your sensor's gain,
would it make sense to make vary at 50, 60, 70 .... 3200?


Not really, since the steps in use are in stops just like shutter speed &
apertures. I'm not sure much would be gained by making steps smaller than
1/3 stop.

Mark