Art. –Nr. RE-SWA-10
Super Wide Angle 10mm
Sharpness:
Very good at the center, but drops towards the edges
x-axis: distance from optical
axis in °, y-axis: resolution in arc minutes
Apparent Field of View:
Our measurement gives 69° - close to the manufacturer data.
Contrast:
Very good.
Aberration:
Noticeable cushion distortion as well as field curvature.
Eye Relief:
Very short eye relief. To have a view of the complete apparent field you
may prefer to remove the rubber eye cap.
Mechanical Quality:
Good quality with rubber eye guard, grip coated body. Fully multicoated
and well blackened inside.
Summary:
You can not use the full apparent field of view in good optical quality.
However, as the field is much larger than for Plossl eyepieces, there is an advantage
at a more or less equal price. Edge quality is enhanced remarkably when
combining this eyepiece with a Barlow lens.