rick.lang wrote:Congratulations! You made a reference to ISO 1000, but doesn’t the UMBG2 just show Gain? With the Pocket cameras, one shouldn’t shoot ISO 1000 as that’s pushing the ISO 400 range (Gain 0) to the point where it will show more noise than at ISO 1250 which is in the ISO 3200 range (Gain +18).
ISO 1600 would be Gain +12.
ISO 800 would be Gain +6.
I don’t know what Gain values are used in the camera that equate to ISO 1250, but it should be just above Gain +9.
You're right Rick. This time out I was just playing with the push focus and push aperture and not paying attention so much to gain setting as to where the histogram was sitting. Just trying to get a feel for how those two functions worked and if the camera would do a half decent job of providing a decent exposure. When I got it back in DR the gain was again referred to in terms of ISO. I was looking then mostly at the waveforms produced. For the camera sitting at the top of the lower native gain, the pictures are very nice and noise free. As many before me I'm not real impressed with the "push to" features of the camera. I'm sure I'll spend most of my time using the Nuke Nano for the focus and my fingers for zoom and Iris via the wheel on the outside of the camera. +9 would be pretty close to the 1250 mark. ISO graduations are 2db on this camera so 10 db would be the first setting in the upper amplifier range. -6 to 8 being in the lower range. The math isn't very clean between full stops with one scale being linear and the other logarithmic. I'll keep playing and testing taking more things into consideration as I go. With both the camera and the lens (first auto, non prime) being new to me there is a lot to wrap my head around and commit to "intuitive" hopefully. I guess it isn't too bad though. -6 lowest setting, 0 first native, 10 bottom of upper range and 16 second native.