LensTip.com

Articles

50 years of Nikon F-mount – Nikkor-S 5.8 cm f/1.4 vs. Nikkor AF-S 50 mm f/1.4G

12 June 2009
Arkadiusz Olech

7. Coma and astigmatism

A quick glance at the below clippings of the diode placed in different places of the frame shows that we’ve found the first culprit of the weaker edge of the frame performance of Nikkor-S 5.8 cm f/1.4. Coma is enormous in this lens and that’s both in the corner of an FX and a smaller DX sensor. What’s sad, even stopping down by one aperture value doesn’t improve the situation much.

Against this, the results of the new Nikkor AF-S 1.4/50 look very well, especially in the DX corner. Here coma’s corrected the way it’s supposed to. In the corner of a full frame however it is not so good any more and coma is clearly visible.

Nikkor-S 5.8 cm f/1.4
50 years of Nikon F-mount – Nikkor-S 5.8 cm f/1.4 vs. Nikkor AF-S 50 mm f/1.4G - Coma and astigmatism
Nikkor AF-S 50 mm f/1.4G
50 years of Nikon F-mount – Nikkor-S 5.8 cm f/1.4 vs. Nikkor AF-S 50 mm f/1.4G - Coma and astigmatism



Please Support Us

The coronavirus crisis has been adversely affecting many businesses and, sad but true, ours is not an exception. Despite that difficult situation we would like to preserve continuity and high quality of publications available on all our websites. Still, we are now aware it might be impossible without additional financial help. That's why we would like to ask all those who visit, read, and care about Optyczne.pl, LensTip.com i Allbinos.com for support - it's enough you send us a small sum of money via PayPal. If a lot people decide to support our websites we think we'll stand a chance and survive next months without any lasting harm. We count on your support and understanding, stay safe and be healthy.

- - - - - - - - - - - - - - - - - advertisement - - - - - - - - - - - - - - - - -

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

Another of off-axial aberrations– astigmatism – is very sensitive to all inclinations of lenses at the wrong angle to optical axis. And we know that it’s easier for those things in a well-used lens. So in this category, Nikkor S 5.8 cm f/1.4 having worked almost half a century is in a hopeless situation. The result of 15% is not very good, although taking into account the flow of time and intensive operation it’s no shame for the company.

As a comparison, the new and much less used Nikkor AF-S 50 mm f/1.4G came off much better here. Its result is 6%, so a level we recognize as the boundary of a good and a very good.