Hi,
This is from an apertures series I made recently, left is f/8 and right is f/16, this is on 6.8 my pixels. The difference between f/8 and f/11 is not very noticable visually, but very obvious between f/8 and f/16.
An important factor is effective aperture, if Justin is shooting 1:1 which would correspond to 480 mm distance from sensor to subject on a 120 mm, effective aperture f/8 would be f/16, that is the cause of my interest for scale and shooting distance.
Best regards
Erik
Don't forget that while my $2 bill shots were taken with the mamiya and 120mm lens, the Aptus ii 12 back used has 5.2um sensor pitch, but Justin's back has larger. I have noted diffraction starts to be noticeable between f/8 and f/11 on the 80mp backs, however its not that noticeable and some lose can be 'mitigated' through software.
My lily pictures are clearly affected by diffraction but still usable - they look quite fine a normal print sizes even though I present a 100% pixel peeping crop.
