« on: April 29, 2014, 08:25:41 PM »
I think your cost estimate of $1000 for a FF sensor is way off....
No doubt, thus the mention of the per wafer cost being a WAG (wild-asset guess). It was a relative example, the absolute numbers didn't matter.
Jon's point about different wafer sizes changes the the relative numbers, of course, but the main point remains - there are possible scenarios where a process change could decrease production costs for FF sensors but not for APS-C sensors, because of the differential effect of random blemishes with FF sensors that are 2.6 times the size of APS-C sensors.
I would guess at a wafer cost is in the range of $2000, given the technology nodes in play (180-500nm)
For the differences in cost structure, see my previous explanation.