Could you show 100% crops Doug? would be interesting to see.
Regards
Note that these pictures are from a target w/o sharp edges. The spacial frequencies are below Nyquist which eliminates artifacts and variations from the pixel sampling positions when processing the data through the FFT transforms:
All at 1/500th.
208a5338x.tiff: Live view mode 1;
208a5332x.tiff: Standard, No IS
208a5335x.tiff: Standard, w IS
If you compare the images you can see a slight blurring in the vertical on the Standard, no IS, a bit less on the standard w IS compared to the Live view which has no motion blur.
The image is from the circular superposition of 7 sine waves which are spaced at 10, 20, 30, ... 70 lines per mm. From this MTF can be measured and the additional effects of motion blur can be seen.
Corrected. Mirror lockup misstated