Lens Testing, Round 1
Part 3. Wide Open Edge Target
30mm Arsat. Still good, resolving Group 3. Note the effects of fisheye distortion.
Coming soon: Hartblei 45mm PCS.
45mm Mir. Not quite resolving Group 3, and showing a bit of astigmatism (coma).
50mm Flektogon. This one is a disappointment. The pronounced coma limits performance on the vertical bars.
80mm Arsat. Resolving Group 3, but contrast is low.
80mm Volna. Neither resolution nor contrast as good as the Arsat.
120mm Vega. Excellent!
180mm Sonnar. Even better! Better than in the center.
240mm doubled Vega. See the color? It's a blue fringe on the left edge of the bars.
360mm doubled Sonnar. The color is here, too, but the resolution is quite good.
And the rankings:
240 2x Vega
360 2x Sonnar
50 Flektogon (a real disappointment at the edges wide open)
In the next section we will look at the results stopped down.