Sony 7R IQ vs Canon 5Dm3, Nikon D800E and Pentax645D

[jrista]

Found interesting info on Sony 7R image quality vs. 5Dm3, Nikon D800E and Pentax 645D with 100% comparison crops at different ISOs at imagine -resource:
http://www.imaging-resource.com/camera-reviews/sony/a7r
Very interesting to see comparison of Canon 5D M3 with Sony a7R at ISO 3200 both low contrast high details shorts and for high contrast ones.

What surprises me is how much sharper the A7r is compared to the D800E. Both have no low-pass filter, but the A7r has noticeably more detail before sharpening. I wonder if that is due to literally not having a low pass filter at all, where as the D800E is actually blurring (separating) light in one direction, then "unblurring" (converging) it. Guess that, despite its special filter stack, it still isn't quite as good as not having a filter at all...

How does a FF mirror less with shallow 'flange" distance cope with the angle of light striking the extremities of the sensor at a more acute angle than on a camera with same sensor size but longer 'flange' distance ? I thought the angle of light hitting the pixel 'buckets' was a potential problem on FF due to a shadowing effect. I presume that on the Sony it's either not a real problem anyway, the pixels are shallower, or the signal is being amplified at the extremities.

Sony developed a way to create microlenses that deal with increasing angle of incidence as you approach the corner of the sensor. Instead of a uniform microlens layer, the layer changes as you reach the edges. I am not even sure Sony was the first to develop the approach...I thought I read a paper about Panasonic or one of the other companies developing such a technique a year or so ago. Anyway, the microlenses are designed to guide light at a high angle of incidence into the pixel well in the edges of the frame.

no , Leica had the first off set micro lenses at their ccd

Maybe it was Leica. I knew I read something about a different brand developing the offset microlenses before, and that Sony just replicated the technique.

 

[MLfan3]

Leica?
it was a great company but now it is a shitty copy cat brand.
they never invent anything new since 1983.
even their lens quality is overrated, the Sony 35mm f2.8ZA(which is designed by Sony) is sharper than the Leica 35mm f1.4 Lux.
if Leica had no European , literally no one really worship for it.
it is the name and look of the body that attract the people buy it despite of whatever Leica fanboys say about it.
and I was a Leica fanboy, but saw the reality and woke up when I saw Tim Ashley's his Leica M vs A7R vs D800E vs RX1 comparison.