LensTip.com

Lens review

Sony FE 14 mm f/1.8 GM

20 April 2021
Maciej Latałło

5. Chromatic and spherical aberration

Chromatic aberration

When you test a construction that is simply larded with ED and Super ED elements you can count on good correction of longitudinal chromatic aberration. Photos below show that in this area the Sony lens indeed has no problems whatsoever.

Sony FE 14 mm f/1.8 GM - Chromatic and spherical aberration


Now let's take a look at lateral chromatic aberration correction – an appropriate graph you can find below.

Sony FE 14 mm f/1.8 GM - Chromatic and spherical aberration


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

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


No reservations here - the results are very good, especially taking the parameters of the tested lens into account. Aberration decreases to less than 0.08% at the maximum relative aperture, and on more significant stopping down it is 0.04-0.06% - all these values can be described only as low. In the case of the rival Sigma aberration increased slightly on stopping down but the range of values was very similar to that of the Sony. It seems in this category you can announce a draw.

A7R III, RAW, f/1.8 A7R III, RAW, f/11.0
Sony FE 14 mm f/1.8 GM - Chromatic and spherical aberration Sony FE 14 mm f/1.8 GM - Chromatic and spherical aberration


Spherical aberration

In first photos of this chapter it would be difficult to notice any 'focus shift' symptoms even if you take a closer look – significant depth of field influenced that result without doubt. Still some traces of weaker correction of spherical aberration are visible in circles of light we reached before and behind the focus – a brighter rim on the edge in the case of the former and soft edges in the latter.

No significant focus shift and a very good image quality in the frame centre by f/1.8 allow us to suggest that spherical aberration is kept in check quite efficiently – even if there are some problems, they aren't especially pronounced.

A7R III, f/1.8, before A7R III, f/1.8, after
Sony FE 14 mm f/1.8 GM - Chromatic and spherical aberration Sony FE 14 mm f/1.8 GM - Chromatic and spherical aberration