The lack of color fringing, means that the micro lenses are concentrating light through the CFA into the wells without any adjacent spillover (cf NEX 7 or M9).
I wonder if the cause of the detail smearing is thus due to refraction in the AA/IR filter/layer that sits on top of the microlenses, in combination with the high incidence angle in the corners?
To take an optimistic view - the fabrication effort required to remove this for a dedicated stills camera like the hypothetical NEX 9 or FF GXR might be relatively low.
dakw23 wrote:
Problems with the 75mm, can you be more specific? Note in the Bethesda fountain series the focus point is on the trees behind the angel, so looking at the bricks in the bottom right won't be a good indication of sharpness at f/2, due to DoF.
it is harder to tell due to some of the focus variations, but it seems to have pretty distinct sharpness fall off towards the edges even at f/5.6.
_julian_ wrote:
The lack of color fringing, means that the micro lenses are concentrating light through the CFA into the wells without any adjacent spillover (cf NEX 7 or M9).
I wonder if the cause of the detail smearing is thus due to refraction in the AA/IR filter/layer that sits on top of the microlenses, in combination with the high incidence angle in the corners?
To take an optimistic view - the fabrication effort required to remove this for a dedicated stills camera like the hypothetical NEX 9 or FF GXR might be relatively low.
I would rather have (reasonable) color fringing than edge smearing. Fringing can be removed... smearing can't.
Smearing is likely caused by the AA filter and the thickness of the cover glass and any other sensor toppings. There was a really good write up about this in a fairly recent Zeiss paper (link is a pdf file) - the problem is explained on pg. 12.
