Sony FE 90 mm f/2.8 Macro G OSS
7. Coma, astigmatism and bokeh
Center, f/2.8 | Corner APS-C, f/2.8 | Corner FF, f/2.8 |
![]() |
![]() |
![]() |
Center, f/4.0 | Corner APS-C, f/4.0 | Corner FF, f/4.0 |
![]() |
![]() |
![]() |
Astigmatism, understood as an average difference between vertical and horizontal MTF function values, amounted to 4.6%. We consider it to be a low level so we have no reservations in this testing category.
Please Support UsThe 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. |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
The appearance of out-of-focus images is good. You can notice a slight trace of onion ring bokeh due to one aspherical element in the lens's construction; also, on stopping down, there is a lighter rim which might be a bit bothersome. Still both these effects aren't especially pronounced so the circles of light look nice and well. Mechanical vignetting is a problem, though – by f/2.8 it is very distinct and it never disappears completely even on stopping down the aperture by 2 EV.
Center, f/2.8 | Corner APS-C, f/2.8 | Corner FF, f/2.8 |
![]() |
![]() |
![]() |
Center, f/4.0 | Corner APS-C, f/4.0 | Corner FF, f/4.0 |
![]() |
![]() |
![]() |
Center, f/5.6 | Corner APS-C, f/5.6 | Corner FF, f/5.6 |
![]() |
![]() |
![]() |