Test Results

Art.–Nr. TS-SW-20

TS Super Wide Angle 20mm

Sharpness:

Very good sharpness within the complete apparent field of view.

x-axis: distance from optical axis in °, y-axis: resolution in arc minutes

Apparent Field of View:

The apparent field of view is approx. 62° - a little bit less than given by the manufacturer data.

Contrast:

Very good contrast.

Aberration:

Slight cushion distortion.

Eye Relief:

Not too easy. You will need some practice in finding the correct distance where the center as well as the edge provide a sharp image at the same time.

Mechanical Quality:

Good quality with foldable rubber eye cup.

Summary:

A nice wide angle eyepiece. At F/5 you will see noticeable aberration close to the edge. Recommended for F/6 or slower.

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