LensTip.com

Lens review

Voigtlander Apo Lanthar 50 mm f/2 E

15 July 2021
Maciej Latałło

7. Coma, astigmatism and bokeh

Look at six thumbnails below, showing coma at different apertures and in different frame positions. We could have swapped them at random and hardly anybody would notice. It's the proof that coma and other aberrations of higher degree that influence the shape of point-like sources of light are corrected very well even in the corners of full frame. A round of applause!

Center, f/2.0 Corner APS-C, f/2.0 Corner FF, f/2.0
Voigtlander Apo Lanthar 50 mm f/2 E - Coma, astigmatism and bokeh Voigtlander Apo Lanthar 50 mm f/2 E - Coma, astigmatism and bokeh Voigtlander Apo Lanthar 50 mm f/2 E - Coma, astigmatism and bokeh
Center, f/2.8 Corner APS-C, f/2.8 Corner FF, f/2.8
Voigtlander Apo Lanthar 50 mm f/2 E - Coma, astigmatism and bokeh Voigtlander Apo Lanthar 50 mm f/2 E - Coma, astigmatism and bokeh Voigtlander Apo Lanthar 50 mm f/2 E - Coma, astigmatism and bokeh


Astigmatism, understood as an average difference between vertical and horizontal MTF50 function values, amounted to 2.0%. It is a very small value so the lens once again deserves to be praised.


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The topic of defocused circles of light we found very interesting. Firstly, the lens contains two double-sided aspherical elements and because of them in blurry areas you can notice perhaps not fully-fledged onion-ring bokeh but rather some fine texture. Mechanical vignetting also makes itself felt - its level is high by f/2.0, medium by f/2.8, and it disappears completely by f/4.0. The performance of the aperture is also unusual. At the maximum relative aperture and by f/2.8 you get a very nice, round shape of circles of light, without any bright rim. From f/4.0 onwards the aperture starts looking like a multi-pointed star so the images become really interesting. Can you call it also pleasing to the eye? It's a matter of taste; personally I am glad the producers try to be original and offer you something different than the rivals.

Center, f/2.0 Corner APS-C, f/2.0 Corner FF, f/2.0
Voigtlander Apo Lanthar 50 mm f/2 E - Coma, astigmatism and bokeh Voigtlander Apo Lanthar 50 mm f/2 E - Coma, astigmatism and bokeh Voigtlander Apo Lanthar 50 mm f/2 E - Coma, astigmatism and bokeh
Center, f/2.8 Corner APS-C, f/2.8 Corner FF, f/2.8
Voigtlander Apo Lanthar 50 mm f/2 E - Coma, astigmatism and bokeh Voigtlander Apo Lanthar 50 mm f/2 E - Coma, astigmatism and bokeh Voigtlander Apo Lanthar 50 mm f/2 E - Coma, astigmatism and bokeh
Center, f/4.0 Corner APS-C, f/4.0 Corner FF, f/4.0
Voigtlander Apo Lanthar 50 mm f/2 E - Coma, astigmatism and bokeh Voigtlander Apo Lanthar 50 mm f/2 E - Coma, astigmatism and bokeh Voigtlander Apo Lanthar 50 mm f/2 E - Coma, astigmatism and bokeh