>>4310711>>4310717sorry, I was talking about the 4 zones on my image.
On the MTF sheet that the doghair man shared, the 4 different lines represent the sharpness measurements at each finer degree of detail.
>2.5, 5, 10 & 20 line-pairs per millimeterBecause that's a chart for a large format lense, it's important to note that it's measured over a huge 10 inch image circle, and at much lower lp/mm levels that you'll see quoted for tiny full frame lenses.
In pic related you can see what a good full frame lense does, at f/1.4 it's roughly as sharp as the doghair lense is at f/11, but only for a circle about 3cm across vs 12cm on the big boy.
