^Those look great! The Bokeh even looks good. Do you see any LoCA in these in the out of focus backgrounds. I get the sense there might be a little cyan/green.
Tariq Gibran wrote:
^Those look great! The Bokeh even looks good. Do you see any LoCA in these in the out of focus backgrounds. I get the sense there might be a little cyan/green.
I dont see any...Even WO it has very little CA but I prefer to use it between f2.8-f5.6 as its razor sharp at f2.8 onwards and the DOF is more forgiving when focussing...Some of those were taken f2.8, some at f4 and some at f5.6.
I wonder if you can guess which apertures each were taken at?
brainiac wrote:
You may have discovered focus shift in the Zeiss at f5.6
Indeed, I remember that at focusing distance of 1 meter (reproduction ratio about 1:18) we measured the Planar 1,7/50mm having at f/5.6 a focus shift of 110 micron (namely closing from f/1.7 to f/5.6), which is about double as much as at infinite, and double as much as it would be ideal.
Conclusion:
More like comparing 2 individual lenses
Reasons:
Wrong test procedure
(lens to target alignment and focusing in this case)
Wrong test condition
(changing light and flash)
Wrong test equipment
(digital camera and flash instead of proprietary equipment use by manufacturers)
Wrong test targets
(testing center to corner sharpness with object of uneven plane)
Insufficient test samples
(require a distribution curve to show average performance)
These are just a few items I noticed on this thread base on my experience working with (not for) and auditing optical and sensor manufacturers.
