Art.–Nr. TS-PL-10 
TS Ploessl 10mm
 
Sharpness:
Sharp within 30° apparent field of view, blurry towards the edge.
 

x-axis: distance from optical
axis in °, y-axis: resolution in arc minutes
 
Apparent Field of View:
The apparent field of view is approx. 45° 
 
Contrast:
Very good contrast because of good multicoating and use of just four
lenses. 
 
Aberration:
Nothing noticeable.
 
Eye Relief:
Comfortable.
 
Mechanical Quality:
Simple, but not bad. Unfortunately no blackened filter thread.
 
Summary:
Good and inexpensive Ploessl. Just the blurry edges are bothering.