Sirui Aurora 85 mm f/1.4
9. Vignetting
| A7R IIIa, APS-C, f/1.4 | A7R IIIa, APS-C, f/2.0 |
|
|
Even at the maximum relative aperture, vignetting is not particularly bothersome here, reaching a relatively modest value of 20% (-0.66 EV). The problem disappears completely as early as f/2.0, where the measured result is just 8% (-0.23 EV).
Please Support UsIf you enjoy our reviews and articles, and you want us to continue our work please, support our website by donating through PayPal. The funds are going to be used for paying our editorial team, renting servers, and equipping our testing studio; only that way we will be able to continue providing you interesting content for free. |
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
When moving to the larger full-frame sensor, the problem becomes noticeably more pronounced, as can clearly be seen in the images below.
| A7R IIIa, FF, f/1.4 | A7R IIIa, FF, f/2.0 |
|
|
| A7R IIIa, FF, f/2.8 | A7R IIIa, FF, f/4.0 |
|
|
At the maximum relative aperture, our measured result reached 45% (-1.74 EV). This is a good result compared to the competition. For example, the noticeably larger Viltrox 85 mm f/1.4 Pro showed a level of 51% here, while the expensive Sony 85 mm f/1.4 GM reached 49%.
At f/2.0, we measured 29% (-0.97 EV), which decreases to 21% (-0.69 EV) when the aperture is stopped down to f/2.8. The issue becomes almost negligible at f/4.0 and f/5.6, where we recorded results of 13% (-0.39 EV) and 10% (-0.31 EV), respectively.
| Sony A7R IIIa, JPEG, f/1.4 |
 |
