Astrophotography by Philipp Salzgeber




Wolfurt / Austria

Astrophotograpic lens tests

Move your mouse over the f-stop in the right column, to load the corresponding test image in the left frame.

lens comparison Nikkor AF-S 18-70DX f/3.5 - f/5.6 18mm 1)       f/3.5 f/4.0 f/5.6

Tokina AF 12-24mm f/4, 12mm 5)

        f/4.0 f/5.6
Nikkor AF 20mm f/2.8     f/2.8   f/4.0 f/5.6
Nikkor Ai 35mm f/2.0 2)   f/2.0 f/2.8   f/4.0  
Nikkor Ai 50mm f/1.8 f/1.8   f/2.8   f/4.0  
Nikkor AF 85mm f/1.8 3) f/1.8   f/2.8   f/4.0  
Nikkor AF 105mm f/2.8           f/5.6
Nikkor Series-E 70-210mm f/4 210mm 4)           f/5.6

All Tests were done using a Nikon D200 camera on a Super Polaris mount. No guiding corrections were done. Move the cursor over the table to see images taken with different lenses, f-stops and exposure times. It may take a while for all images to load - please be patient!

Some images have been taken on different dates. Do not use the overall brightness or color of the image as a criteria for lens quality as both has been changed by processing.

1) was not properly focused
2) field curvature is visible
3) chromatic aberration is visible
4) Image was processed in Iris, bad focus
5) The corner image is actually upper left, not lower left


AF-S 18-70DX f/3.5 - f/5.6 18mm 1)
Difficult to focus on infinity, center sharp, corners soft, strong vignetting at f/3.5 18mm
Tokina AF 12-24mm f/4, 12mm
Very sharp, focused at infinity when at limit of focus movement, very sharp across the field, vignetting at f/4 and 12mm, no vignetting at f/5.6
AF 20mm f/2.8
low vignetting, soft corners at f/2.8, sharp stopped to f/4, strong lateral chromatic aberration (though this is fixable e.g. in Photoshop)
Ai 35mm f/2.0
corners soft due field curvature, even at f/5.6
Ai 50mm f/1.8
strong spherical aberration when wide open, gradual vignetting noticable at f/1.8, longitudinal chromatic aberration noticable
AF 85mm f/1.8
sharp, vignetting gone at f/4, strong longitudinal chromatic aberration at f/1.8, decent at f/4
AF 105mm f/2.8
very sharp, no vignetting and chromatic aberration at f/5.6 - need to test f/2.8
Series-E 70-210mm f/4 210mm
no noticeable chromatic aberration at f/5.6, no good focus for test



All images Philipp Salzgeber

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